Roof Restoration: What You Need to Know

More than just a symbol of protection and comfort, the roof of any building requires special attention if you want it to do its job well. Especially if you have an old roof that has withstood the elements for many years, it may be time to consider a restoration.

A well-maintained roof can significantly improve the energy efficiency of your building. However, roof restoration requires careful planning and deliberate, step-by-step execution to be successful.

In this article, the experts at our Montreal roofing company guide you through the entire roof restoration process and offer valuable advice on deciding when to restore your roof, which steps to follow to complete the project successfully, and how much roof restoration could cost.

When is it time to restore your roof?

Before beginning a roof restoration, you need to decide whether your roof really needs to be renovated (or replaced). There are many signs that could indicate your roof needs work, and it’s important to note these early and take action to prevent more serious problems in the future.

Signs your roof needs restoration

  • Water leaks and seepage: If you notice water stains on the ceilings or walls of your home, this may be caused by a leaky roof. Water infiltration can damage the structure, insulation and other components of your building. This is a sign that your roof needs immediate attention.
  • Broken or missing shingles: Broken or missing tiles, shingles or other roofing materials are clear signs that your roof needs a restoration. Gaps in the roofing cover can allow water to penetrate the building and cause damage.
  • Deterioration of roofing materials: If you notice signs of wear on your roofing materials, like buckling, cracks or discoloration, it’s time to consider a roof restoration.
  • Loss of energy efficiency: If your energy bills are rising for no apparent reason, it could be due to poor insulation. Re-insulation can improve your building’s energy efficiency.
  • Advanced age: If your roof has exceeded its normal lifespan (generally between 20 and 30 years, depending on the material), we recommend considering a restoration, even if there are no obvious signs of damage.

The benefits of preventive roof repair

There are several advantages to preventive restoration. By acting before problems worsen, you can save money in the long term and avoid more costly repairs. Preventive restoration can also make your roof more watertight, improve insulation and help preserve the structure of your building.

If you think you need a professional preventive restoration service, contact our roofers!

How to repair an old roof in 8 steps

The process of renovating an old roof requires careful planning and respect for a specific procedure. There are 8 steps to follow to successfully repair your roof.

1. Assessment of current roof condition

Before starting any work, you need to carry out a complete assessment of your roof’s current condition. This involves inspecting the framework, roofing materials, flashing and any signs of damage. Identify damaged areas, leaks and signs of deterioration to determine the extent of the work required.

2. Planning and design

Once the assessment is complete, you can start planning the restoration. Choose roofing materials according to the local climate, how you want your building to look, and durability. Remember to consider roof insulation so that you can improve your building’s energy efficiency. Draw up a detailed plan that includes everything from materials to architectural layout.

3. Site preparation

Prepare the site by making the area secure and doing whatever is necessary to protect the immediate surroundings. Install safety barriers and protect windows and exterior fittings to avoid potential damage during the restoration. Make sure you have all necessary equipment.

Since roofing work involves working at heights, it’s best to leave it to a professional. At Duro-Toit, we have the equipment and experience to carry out work at heights in complete safety.

4. Demolition and disposal

The process begins with the removal of old roofing materials, such as tiles or shingles, making sure to respect safety regulations. Remove damaged layers and clean the surface in preparation for the installation of the new roof.

5. Renovation of the roof structure

If your roof structure is showing signs of deterioration, now is the time to make the necessary repairs. Reinforce beams, replace damaged parts and make sure the framework is strong and can safely support the new roof.

6. Insulation and ventilation

Take advantage of this opportunity to improve your sloped roof ventilation and insulation. You can add high-quality insulation material between the rafters to improve the energy efficiency of your home or building. Make sure your roof also has adequate ventilation to prevent moisture build-up.

7. Installation of the new roof

Choose roofing materials that will function correctly for the type of building, and look good too. Whether you opt for traditional shingles, asphalt shingles or other modern materials, be sure to follow installation instructions for a watertight, long-lasting roof.

8. Finishing and inspection

Once the new roof has been installed, you’ll need to do some careful finishing to ensure that it remains watertight. Do a thorough inspection to make sure everything is up to standard and every detail has been looked after.

How much does roof restoration cost?

One of the key elements to consider when restoring your roof is the total cost of the project. Factors influencing cost can vary considerably. The following are the main points to consider:

Factors influencing the cost of roof renovation

  • Roof size and shape: The size of your roof is an obvious factor influencing cost. Larger roofs require more materials and labor, which will increase expenses. The complexity of the roof configuration, such as slopes, dormers or chimneys, can also influence the cost of roof restoration.
  • Choice of materials: The type of roofing materials you choose plays a role in determining the overall cost. Top-of-the-range materials may be more expensive to buy, but can offer greater durability and look better for a longer time.
  • Additional work: If the roof structure needs repairing, insulation needs improving, or items such as rain gutters and vents need replacing, this additional work will add to the overall cost of the restoration project.
  • Accessibility and safety: If your roof is difficult to access or workers need to take extra safety precautions to do the job, this can add to the cost. Sometimes it is necessary to take measures protect your property during the work, which could also influence the overall cost.

For a free quote, fill out our form today!

Budget for roof restoration

To estimate the budget for your roof restoration, you can:

  • Ask for quotes: Get detailed estimates from several roofing contractors. This will give you a clearer idea of the costs associated with your specific project.
  • Calculate the cost of materials: Calculate the approximate cost of materials required, based on the surface area of your roof.
  • Include extra costs: Don’t forget to include additional costs such as structural repairs, insulation, vents, rain gutters and finishing.
  • Allow a margin: It’s a good idea to allow a margin for unexpected expenses and cost variations. In general, we recommend a margin of 10% to 20% of the total budget.
  • Look for grants and financial assistance: Find out about any grants or financial assistance programs available for roof restoration. These initiatives can help reduce your expenses.

Roofing restoration grants in Quebec

If you’re planning to renovate your roof in Quebec, there are several financial assistance programs available to help finance your project. Here’s an overview of the different resources available to help you finance your roofing project.

CMHC Eco Plus

The CMHC Eco Plus program offers subsidies to homeowners who purchase climate-friendly housing. A pre- and post-retrofit energy assessment is required to qualify. Rebates can vary from 15% to 25%, depending on the energy savings achieved by your building.


The Rénoclimat program encourages energy-efficient home renovations. For roof insulation work, grants range from $35 to $975, depending on various criteria such as the surface area being insulated and the insulation values before and after the work. Owners of single-family homes, duplexes, triplexes or apartment buildings of up to three storeys and 600 square metres are also eligible.


The RénoRégion program is aimed at homeowners in rural areas whose dwelling value does not exceed $150,000. It finances up to 95% of the cost of eligible work, to a maximum of $20,000. However, this amount can rise to $25,000 for households with incomes below or equal to the AIL. This program is available in municipalities with fewer than 15,000 inhabitants and in the Gaspésie-Îles-de-la-Madeleine region.

GST and QST rebates

Owners of single-unit buildings or condominiums may be eligible for a GST/QST rebate on major renovations. Eligibility criteria apply, such as occupancy of the residence after the work and the cost of the work.

Renovation Quebec

The Renovation Quebec program is designed to provide financial support to homeowners in run-down residential areas. Eligible projects include home renovations for low-income households and major home renovations.

Municipal programs

Many municipalities in Quebec, including Montreal, offer subsidy programs for roof repairs in specific areas. Amounts and eligibility criteria may vary. For more information, contact your local municipality.

Duro-Toit: roof restoration for every building

Renovating your building’s old roof is the only way to guarantee that it will last a long time and protect the rest of the building. To ensure exceptional results and peace of mind throughout the process, it’s always better to rely on a professional roofing service.

Duro-Toit roofers are experts in flat and pitched roof restoration. We understand the importance of giving attention to every detail during a roof restoration. Our highly trained team has the expertise to assess your roof’s current condition, plan the renovation strategically and carry out each step of the project with precision.

Whether you have a flat or pitched roof, we can provide superior solutions. You can rely on our years of experience to benefit from a high-standard professional job. Contact us to discuss your project!

How Much Does a Flat Roof Cost?

When it comes to building or renovating a building with a flat roof, one of the first questions that comes up is: how much will it cost? By understanding all costs associated with installing a flat roof, you can plan a realistic budget and make good decisions.

In this article, our roofers present the different factors that can affect the price of constructing a new flat roof.

What does a flat roof cost per square foot?

The cost-per-square-foot approach is widely used in the construction industry to determine the price of a flat roof. This method offers a convenient way to compare prices and obtain a general budget estimate.

Based on the experience of our roofing contractors, the average cost per square foot for a flat roof in Quebec can vary from $10 to $40. This estimate is based on several factors, which we explain below.

The price of a flat roof, depending on the type of covering

The right flat roof membrane system guarantees that your roof will be waterproof and your building will be protected from the elements.

Homeowners have many choices when it comes to choosing the right flat roof membrane. Of course, there can be significant price differences between different types of roofing.

TPO membrane

TPO (thermoplastic polyolefin) flat roof systems consist of a single layer of synthetic material with a reinforcing grid. The TPO membrane is usually tacked down or fully adhered to the roof substrate.

This type of membrane stands out for its exceptional durability, and is usually guaranteed for 20 years. However, the quality of this membrane is greatly influenced by ambient temperature. In areas like Quebec where cold temperatures are common, the joints between membranes can become brittle. Even so, TPO membranes remain one of the best-performing membranes on the market, as long as it is installed correctly and used under the right conditions.

The average price per square foot for a TPO-coated roof is estimated at $15 to $25.

EPDM membrane

EPDM is an acronym for ethylene propylene diene monomer, a type of flat roof membrane used mainly for industrial buildings. The best way to imagine this material is to compare it to the inner tube of a bicycle tire.

Waterproofing is achieved with a single layer of membrane. Although it is durable, this roof coating is not recommended if there will be a lot of traffic on the roof. It can be installed in several ways: mechanically attached, fully adhered or held in place solely by the weight of the gravel.

Like TPO membrane, the average cost per square foot is between $15 and $25.

Multilayer asphalt and gravel membrane

This type of roof covering is composed of several layers of superimposed felts saturated with hot asphalt, which is then covered with gravel to slow the contraction or expansion of the asphalt during extreme temperature changes.

This inexpensive waterproofing membrane does, however, require recurrent long-term maintenance and the lifespan of this type of flat roof is generally shorter. The use of large quantities of asphalt in multi-layer roofing is also less environmentally friendly, as the extraction and processing of bitumen is energy-intensive and generates pollutant emissions. What’s more, asphalt is not biodegradable and contributes to the longevity of landfill waste once it has reached the end of its life.

The estimated price for this membrane is $12 to $18 per square foot.

Elastomeric membrane

Elastomeric membrane coating is considered one of the most durable roofing membranes, and the best for Quebec temperatures. This waterproofing system is composed of two plies of heat-welded modified bitumen membrane which can be installed at any time of year. Installing elastomeric membrane on a flat roof is often considered a good investment, as it requires little maintenance and has an excellent lifespan.

Although elastomeric membrane contains bitumen, it is a highly environmentally-friendly solution in the long term, thanks to its remarkable durability and resurfacing capacity. It’s both an economical and environmentally friendly choice. The cost per square foot is between $20 and $25.

Flat green roof

A vegetated roof or “green roof” makes it possible to grow plants on the roof of a building, which also regulates its temperature.

The cost includes the expense of the waterproofing membrane that must be installed underneath, and can vary from $10 to $30 per square foot.

Additional costs and fees associated with flat roofs

Beyond the cost per square foot and the choice of cladding, various elements can influence the overall budget of a flat roof project. Keep reading to learn more!

Minor or major roof renovation?

Flat roofs are very common in urban areas like Greater Montreal. Many residential and commercial buildings have flat roofs that were installed decades ago, but unfortunately, flat roofs do not last forever. They need to be renovated periodically so that they continue to function as an effective barrier against the elements.

Of course, a minor renovation to replace the covering will cost significantly less than a major renovation that involves replacing the entire roof system. The more components that need to be renovated (insulation, ventilation, adding skylights), the more expensive it will be.

The size of the flat roof

It goes without saying that the larger the roof is, the more expensive it will be to construct or renovate.

On the other hand, keep in mind that the surface area that requires covering does not include any obstacles on the surface. Also, the larger and taller the roof, the greater the challenge of installation and handling materials and debris. It’s important to consider costs related to labor and tools/equipment (e.g. hoists) required to carry out the work, in addition to permits to block streets, etc.

Roof structure and decking

A flat roof requires a structure and decking that will support the system and mechanical components.

For flat roof projects, prefabricated structural components such as roof trusses with a slight slope can sometimes be used to cut costs, because completely flat structures require tapered insulation.

Flat roof ventilation

Proper flat roof ventilation is vital to preserve the integrity of the building and prevent problems. The National Building Code of Canada lays out ventilation requirements that owners and roofing contractors are obliged to follow.

When renovating or constructing a flat roof, part of the budget must be allocated to ventilation.

Flat roof insulation

A flat roof must be properly insulated to keep the building at a reasonable temperature. Part of the renovation or construction budget must go to insulation.

Vented flat roofs must be paired with insulation that supports the ventilation system. Generally, the system will require fans placed in strategic locations, openings and insulation with a high R-value.

Unvented flat roofs, on the other hand, have no ventilation system in the attic and must therefore be insulated from above using rigid insulation panels placed directly on the vapour barrier.

There are many types of insulation products available at a wide variety of prices. To choose the right one, it is necessary to thoroughly assess the properties and characteristics of each product.

The location of the worksite

When a roofing contractor prepares a quote, they always consider the location of the worksite in their estimate.

For example, building a flat roof in a remote area may involve additional transportation expenses for equipment, materials and labour that will need to be included in the bill.

Also, replacing a flat roof at the top of a 10-storey building can be more expensive than replacing the roof of a duplex, because getting the necessary materials to that height is a complex task that may require additional equipment.

Roof maintenance

While flat roof maintenance costs are not part of the installation price, it’s still important to remember that keeping a roof in good condition requires some investment.

Flat roof maintenance includes regular inspections and occasional snow removal. Neglecting to care for a flat roof will inevitably shorten its lifespan.

The roofing contractor

Generally, the cost of materials is relatively consistent from one contractor to another. However, hourly rates can vary considerably. Some companies provide warranties, use certified labour and have an excellent reputation, while others do not. It’s generally worth paying a bit more for high quality roofing work. Beware of prices that are too good to be true!

Get a quote for your flat roof replacement with Duro-Toit

Are you considering having a flat roof replaced or repaired? There may be more factors to consider than you thought! Take the time to discuss your project with our flat roof experts—it’s the best way to get an accurate picture of the overall cost.

Contact our team to discuss your needs or request a quote for your roofing work.

White Roofs: What are They and How Do They Work?

As global temperatures continue to rise, urban areas are faced with an increasingly problematic issue: heat islands. These are areas where heat accumulates thanks to the dark, heat-absorbing surfaces of buildings and infrastructures, leading to higher temperatures in cities than in surrounding areas.

White roofs are an innovative solution to counter the harmful effects of urban heat islands. They are a promising alternative for cities that need to improve their resilience to the rising temperatures associated with climate change.

In this article, Montreal roofers explore the world of white roofs in detail, explaining what they are, how they work, and the materials used to build one.

What is a white roof?

White roofs are roofs covered in a pale coating, contrary to traditional roofs, which are generally dark. White roofs use special materials to reflect the sun’s radiation back into the atmosphere, so that the roof and building do not absorb as much heat.

How do white roofs work?

A white roof is covered with a reflective coating that is usually white or very pale. This special surface reflects a large proportion of the sun’s rays, reducing the amount of heat that is absorbed by the roof. As a result, the surface temperature of a white roof is significantly lower than that of a regular black roof, even on sunny days. By maintaining cooler temperatures, a white roof helps to mitigate the formation of urban heat islands and also improve indoor comfort.

What are white roofs made of?

A variety of materials can be used to create a white roof, each with its own durability, cost and level of reflectivity. These are a few common products used in the construction of white roofs:

  • Reflective membranes: These PVC or EPDM rubber (ethylene propylene diene monomer rubber) membranes are specially designed to reflect solar radiation. They are applied to the existing roof surface.
  • Reflective paints: Painting a roof with special reflective paint is an easy way to transform a regular roof into a white one.
  • Reflective coatings: Special coatings made with reflective materials like ceramic or silica can be applied to the roof surface to enhance its solar reflectance.

White roof vs. black roof: what’s the difference?

Compared to regular black roofs, white roofs offer numerous ecological advantages. By reducing heat absorption, they help to lower the temperature of buildings and urban spaces, which minimizes the risk of creating urban heat islands. White roofs also reduce energy consumption levels related to air conditioning, helping to cut greenhouse gas emissions and protect the environment.

In addition, white roofs extend roof lifespan by reducing the wear and tear related to high temperatures, meaning fewer roof repairs and replacements are necessary. They also improve indoor comfort, providing a cooler environment in summer without high associated energy consumption.

What are the advantages of a white roof?

The benefits of white roofs go far beyond their ability to control the formation of heat islands. In fact, they are a high-performance, durable and environmentally friendly option.

Significant energy savings

When a roof absorbs the sun’s heat, that heat is transferred to the building via thermal conduction. This means that the temperature inside the building will be warmer, and more energy will be needed to cool the rooms.

By reflecting the sun, a white roof prevents heat from accumulating on the roof and creeping into the building’s structure. The building will stay cooler, which reduces the electricity costs associated with air conditioning. That’s why white roofs are synonymous with saving both energy and money!

Impressive lifespan

It’s important to remember that the main role of a roof is to protect a building from the elements. Fortunately, white roofs can do this effectively, and for a long time.

A white roof can protect roofing materials from repeatedly overheating from exposure to direct sun, thereby preventing related heat damage. In addition, the membrane used to cover white roofs remains highly flexible in winter, able to elongate over 300% in all directions even in temperatures as low as -40°C. It is also resistant to the wear and tear that can result in water infiltration.

Ideal for green roofs

Some white membranes are ideal for green roofs. Of course, you’ll need to check that the roof structure is sufficiently solid before installing a green roof, as it increases the roof’s load.

Reduced waste

Unlike many types of roof covering, some white roof membranes can be recycled.

And since white roof membranes are often more durable than asphalt and gravel membranes, they last longer and help reduce waste.

How much does a white roof cost?

Installing a white roof is an ecological and economical investment that offers long-term benefits. However, the initial cost can vary according to several key factors. These include:

  • Roof area: The first factor affecting cost is the size of the surface to be covered. The larger the roof, the more material and time required.
  • Type of material: The choice of material used for the reflective coating will impact the overall cost. Reflective membranes, special paints and reflective coatings have different levels of durability and the cost of purchase and installation will vary.
  • Roof complexity: The architectural complexity of the roof can also influence cost. A pitched roof or an irregularly shaped roof will require the services of a certified roofer, which can increase the overall cost of the project.
  • Accessibility: Roof access can also play a role in installation costs. A roof that’s difficult to access will require special equipment, and installation make take longer.

Although white roofs may represent a higher initial investment than black roofs, it’s important to consider the potential long-term savings and return on investment they offer.

Are white roofs the best solution for fighting urban heat islands?

Installing white roofs can greatly reduce urban heat islands. They are an excellent solution at a time when concern for the environment and individual well-being is sky-rocketing.

Some areas in large cities, including Montreal, are beginning to make white roofs mandatory on new flat-roofed buildings. While this type of roofing is not yet obligatory everywhere in the province or the country, white roofs are becoming a more popular choice all the time. Curious to learn more about white roofs and the other green roofing options that Duro-Toit offers? Looking for a quote for the cost of installing a white roof on your building? Contact our installation experts today!

7 Steps to Building a Roof Deck

The roof deck was long considered an area that wasn’t good for much, but recently it has become a popular building addition with many perks. As it turns out, this relatively simple extension can transform a plain old flat roof into a functional, attractive and hospitable living space.

But wait a second before picking up that hammer! Building a rooftop deck demands technical skills, knowledge of the correct use of protective equipment and checking up on local legislation.

The best thing you can do to prepare yourself to build a roof deck is read this article by our Montreal roofers! We’ll tell you what you need to know before getting to work.

Why build a roof deck?

Building a roof deck on your own home can radically transform your daily life and improve your living environment.

Private outdoor space

A roof deck is your own personal outdoor space. It’s a secluded sanctuary where you can escape the hustle and bustle of everyday life and enjoy moments of tranquil relaxation, away from prying eyes. You can use it as a reading corner, a space for sunbathing or simply a place to relax with your loved ones.

Urban garden

If you live in the city, building a roof deck gives you the opportunity to create a rooftop garden. You can plant flowerbeds, add window boxes or shrubs in containers, and even construct larger containers for vegetables and herbs.

Uninterrupted view of your surroundings

A rooftop deck also makes it possible to enjoy a panoramic view of the city. Contemplate the bustling cityscape or the natural beauty of the surrounding area and take a break from the daily pressures of life. Sunrises and sunsets become unforgettable spectacles, and you can even climb up to your deck to admire the stars at night.

A place to socialize

A roof deck can quickly become a go-to place for family gatherings, parties with friends or relaxing moments as a couple. It’s an ideal place to hold barbecues, enjoy outdoor cocktails or simply share good times with the people you care about.

Increased property value

Building a rooftop deck can also add value to your property. As well as making your building more attractive, a well designed and maintained deck can be seen as an asset to potential buyers.

Regulations and permits governing roof deck construction

Municipal bylaws and standards for roof decks differ across municipalities. Factors that come into play include the location, height and visibility of your building, and what the building is used for.

It should be noted that buildings located within special zones where the land or property is considered to have heritage value will likely face restrictions to constructing a roof deck.

For more information and to find out whether you can install a rooftop deck on your property, consult our experts or visit your borough’s website.

Different types of roof decks

One of the great things about roof decks is that they come in all shapes and sizes, so there are plenty of options to choose from according to your own preferences and needs. It all depends on the type of building you have, the climate you are living in and what you want to use your rooftop deck for. With these things in mind, here are a selection of the most popular types of roof decks.


This type of roof deck is generally the simplest and least expensive to build. Once you’ve made the necessary structural modifications to your flat or pitched roof, you simply need to build a deck with adequate drainage. Treated wood is a very popular material for this type of rooftop deck.

Green roof

Green roofs are becoming more and more popular, especially in the city, as they allow you to enjoy an oasis of greenery and fresh air right on your own roof. With a green roof, you can take action against urban heat islands and improve the scenery while you’re at it!

However, considering the additional weight that this type of roof deck carries, it is critical to have a professional flat roof inspection done before beginning to build, to make sure your building’s structure is strong enough to support it.

And remember that planting a garden on a roof often requires the installation of a high-performance flat roof membrane and additional drainage systems to prevent water infiltration into the building.

Accessible roof deck

Accessible roof decks can be reached directly from inside the building. They are often equipped with a staircase or trapdoor. This type of rooftop deck is ideal for a relaxation area, leisure space or city garden.

Non-accessible roof deck

Unlike an accessible roof deck, a non-accessible roof deck is not intended for human use. Its main role is to improve thermal insulation and structural waterproofing. To this end, it is often covered with specialized construction materials like waterproofing membranes, gravel or roofing slabs that protect the roof from direct exposure to the elements.

Steps for building a rooftop deck

Building a roof deck is a complex project that demands careful planning and precise implementation. Here are the main steps to follow to successfully build a rooftop deck.

1. Assess feasibility

Before beginning your project, hire a flat roofing contractor to assess the feasibility of the idea and help you design reliable construction plans. A feasibility assessment will also involve verifying the strength of the existing structure to confirm that the roof can withstand the additional weight of the deck as well as furniture and people.

In addition to helping you design the plans and issue the specifications for your flat roof, a roofing professional will be able to give you reliable advice and inform you of the standards and regulations that apply in your area.

2. Obtain permits

Before starting work, make sure you obtain the necessary building permits from municipal authorities. Permit requirements vary according to location.

3. Prepare the roof

Preparing the roof is crucial to making sure your deck will be stable and strong. This step involves thoroughly cleaning the surface, inspecting and repairing any leaks or damage, and installing a quality waterproofing membrane to protect your building from water infiltration.

4. Install the deck

Now that your roof has been prepared, it’s time to install the deck. The deck structure can be made of wood, metal or composite materials, depending on your preferences and the requirements of the project.

Always try to opt for top-quality materials (elastomeric membrane, vapour barrier, treated wood, etc.). High-quality materials guarantee that your rooftop deck will last a long time and keep people safe as they enjoy the view on sunny days!

5. Waterproof the deck

Waterproofing is essential to protect your roof from the elements and avoid water infiltration problems inside the building. Apply a high-quality waterproofing product to the entire surface of the deck, making sure to seal all joints and connections.

6. Fittings and finishing touches

Once the structure and waterproofing are in place, you can fit out your new rooftop deck according to the plans you’ve drawn up. Install furniture, technical equipment (if any), plants or gardens, and any other elements included in the project design.

7. Final inspection

Before using your roof deck for the first time, check that everything is in place and ready to function. Check for effective waterproofing, structural soundness and compliance with building standards, and make sure there are no defects.

Important points when installing a flat roof deck

Although solid, the roof of a building or a house is still vulnerable. Altering its components will make it susceptible to bad weather, temperature variations and much more. As such, building a deck on top of a building will inevitably add weight to the structure, which could weaken it. Similarly, the screws, nails and tools used to assemble the deck can damage the roof covering, which can cause flat roof leaks.

For these reasons, leave the installation to experts. They will be able to take these aspects into account and determine the steps to follow to avoid deteriorating the siding and distribute the weight properly. They will also see if it is necessary to add rubber supports to shore up the construction.

Make sure your flat roof construction zone is safe

In addition to posing certain technical difficulties, this type of work is carried out at height. This implies considerable safety risks not only for the workers, but also for the passers-by and the occupants of the building.

For this reason, it is crucial to hire certified flat roofers to help you build your roof deck. They will establish a safety perimeter, take care of accident prevention and ensure proper waste disposal.

Finally, in addition to looking after their own safety when working at heights, roofing experts can also ensure the safety of your family and friends. They will be able to install the necessary fall protection, such as ramps or guardrails, when required.

Count on Couvreurs Duro-Toit to build your roof deck

Even if you have some experience in construction projects, building a roof deck is not a project to be undertaken lightly. To be confident that you don’t overlook anything when building your roof deck, ask our team for advice.

And if you’re looking for a company that can offer you a ready-made solution, we can help with that too. Request a free quote now and your dream of basking in the sun and BBQing on your roof could become a reality sooner than you think!

Installing Asphalt Shingles: A Complete Guide

Asphalt shingles are popular with consumers not only because they look good, but also because they are durable and affordable.

However, installing shingles is a delicate process that requires skill and attention to detail. In fact, if you don’t have any experience in roofing installation, you could fall into one of the many pitfalls that await amateur roofers.

Don’t be discouraged! In this guide, our roofers offer valuable advice so that you can successfully install asphalt shingles.

How to cut asphalt shingles

When it comes to cutting asphalt shingles, there are several popular methods to choose from. Let’s take a look at the two most common: with a manual shingle knife or using a roofing air knife.

Shingle knife

A shingle knife is a popular tool for making precise cuts on asphalt shingles. We recommend following these basic steps:

  1. Make sure you have a sharp hook blade. A dull knife can make cutting more difficult and less accurate.
  2. Measure the desired length of asphalt shingle with a tape measure and mark it on the shingle.
  3. Place the shingle on a stable, solid surface, making sure it is properly supported.
  4. Hold the shingle knife comfortably, keeping your fingers away from the blade.
  5. Apply firm, steady pressure to cut the shingle in a single stroke, following the line you made earlier.
  6. Repeat this process for each shingle, making sure each cut is straight and precise.

Roofing air knife

Using an air knife can be a faster and more efficient option, especially if you have a lot of shingles to cut. Here’s how to use a roofing air knife to cut asphalt shingles:

  1. Get a roofing air knife. Make sure the blade is clean and in good condition.
  2. Mark the correct length of asphalt shingle using a tape measure and a pencil or piece of chalk.
  3. Place the asphalt shingle on a solid surface and make sure it will not move or vibrate with the pressure of the air knife.
  4. Position the air knife so that the blade is aligned with the line you have drawn on the shingle.
  5. Squeeze the trigger and gently pull the blade across the shingle, applying constant pressure. Follow the line to make a clean cut.
  6. Keep your hands and fingers at a safe distance from the blade while cutting.

Note: Whatever technique you use, remember to wear protective equipment including safety goggles and gloves to avoid accidents.

How to install asphalt shingles on a roof

Installing asphalt shingles is crucial to building a durable, aesthetically pleasing roof. Keep reading to learn how to install asphalt shingles from professional Montreal roofers.

Step 1: Gather the necessary materials and tools

First, gather all the materials you’ll need to install your asphalt shingles:

  • Shingles
  • Galvanized roofing nails of the appropriate length
  • Plastic roofing cement
  • Self-adhesive eave protection membrane
  • Synthetic underlayment
  • Valley and flashing protection (weatherproofing)
  • Roof ventilators

To complete your project as easily and quickly as possible, equip yourself with appropriate tools:

  • Roof-stripping shovel tool
  • Shears (for cutting metal flashings)
  • Chalk line
  • Knife with hooked blade (for cutting felts and blanket rolls)
  • Square
  • Roofing hammer and/or pneumatic nailer
  • Air compressor for use with pneumatic tools
  • Caulking gun
  • Tape measure
  • Trowel
  • Nail bar
  • Personal protective equipment such as harnesses, ropes, runners, energy absorbers, anchors, goggles, and steel toe boots or steel caps

Getting all this equipment together can be complicated and costly for an amateur roofer. To make things easier, contact a roofing professional!

Step 2: Install the underlay system

Let’s assume that the old shingles have already been removed and the waterproofing membrane and flashings have already been installed.

Once your set-up is complete, draw a chalk line from the top to the bottom of the roof. This applies to the use of “3-tab” shingles, the most popular type of asphalt shingle, which are installed from the bottom up (the ladder pattern).

For laminated shingles, the installation procedure will be different. The first course of shingles (on the lower part of the roof) will be composed of 3 shingles, the 2nd course of 2 shingles and the 3rd course of 1 shingle.

Step 3: Install the asphalt shingles

Now you need to nail the shingles in place with an air nailer and trim the excess with a knife. Leave the excess strips slightly above the ridge, however, as these will be trimmed later.

When installing asphalt shingles, be careful to nail the shingles where indicated to ensure maximum pull-through resistance. Four nails per shingle are usually enough, but it is even better to use 6 nails for maximum long-term adhesion.

When the siding crosses the corners of a gable or other sloping area (valley), be sure to cut the shingles at an angle to reduce the risk of your roof leaking.

To keep the rows straight, we recommend drawing horizontal lines at regular intervals.

Step 4: Caulk

Next, caulk each joint and crack and use plastic cement to seal them off. While you’re at it, now is a good time to seal your chimneys, vents, roof ventilators and ridges as well, but remember to leave a free pathway for water to drain off your roof. 

Step 5: Cleaning and finishing

Finally, take the time to do a meticulous finishing job. This includes cutting off excess shingles and applying sealants.

Always remember to work safely

We must emphasise the importance of safety when installing asphalt shingles or doing any other work at height.

Always remember, this type of work involves adhering to building codes and respecting occupational health and safety standards.

It’s best when roofing work is carried out by a team of professionals after doing a roof inspection.

Couvreurs Duro-Toit can install your asphalt shingles

Don’t underestimate the complexity of installing asphalt shingles on a pitched roof. This work is best left to professional roofers if you do not feel completely comfortable with any of the steps outlined above.

When you rely on Duro-Toit, you benefit from personalized service, expert advice and superior workmanship. We’re dedicated to customer satisfaction and we’ll build a roof that meets your needs and adds value to your property.

If you would like more information on our asphalt shingle installation service or to learn more about our other roofing products and services, contact us today!

How to Choose a Reputable Roofer :10 Factors to Consider

Having trouble finding the right roofer? Whether you’re installing a new roof or having your roof redone, it’s important to choose a roofing contractor carefully. You may think you’re meeting with a contractor who knows what they are doing, but there are things you should be aware of to be sure you’re on the right track.

Wondering which factors are important in choosing a reputable roofing contractor? Here are ten tips to help you discover and choose the right (and maybe even the best) Montreal roofers!

Factors to consider for choosing a good roofer

In the search for a good roofer, there are several specific factors you need to keep in mind. Here are ten tips for finding right roofer for your project:

Tip #1: Ask friends and family for recommendations

When looking for a certified roofer, it’s a good idea to start by asking around for recommendations. Talk to friends, neighbors, co-workers or family who have recently had roofing work done. They’ll be able to give you valuable information about the roofers they’ve worked with, including their reliability, professionalism and the quality of their work.

Personal recommendations can be an excellent way to find a trustworthy roofer, since you’ll be getting information from people you trust.

Tip #2: Use the Internet to find roofers in your area

The Internet is a valuable resource for finding roofers in your area. Search online using terms like “roofer in my area” or “qualified roofer near me” to get a list of local professional roofers to check out.

Browse their company websites to learn more about their skills, services and experience. Be sure to check whether these roofers have the right skills and materials for your specific roofing project.

Tip #3: Read online reviews and ratings

Once you’ve identified a few potential roofers, it’s essential to check their online reputation. Take a look at reviews and ratings left by previous customers on Google, the Yellow Pages and industry-specific sites. These comments will give you an insight into customers’ experience with each roofing service.

Look for positive comments related to work quality, on-time delivery and transparent communication. Be wary of professionals with recurring negative reviews or unresolved complaints.

Tip #4: Licenses and certifications

When choosing a roofer, it’s essential to check whether they hold a valid license, as this is an important indicator of the company’s legitimacy and compliance. Check with the appropriate authorities, such as the Régie du bâtiment du Québec (RBQ) in Quebec, to confirm that the roofer is registered and has an up-to-date license.

You should also check the roofer’s certifications. Specific roofing certifications, like those awarded by roofing materials manufacturers, are a sign that the roofer is a competent expert, professionally trained and recognized by the industry.

Les Couvreurs Duro-Toit holds numerous certifications demonstrating the quality of our work and customer satisfaction, including the Consumer’s Choice Award, which we have been given for the 4th year in a row.

Tip #5: Experience and knowledge

Experience is a key factor in finding a good roofer, as an experienced roofer has an in-depth knowledge of installation techniques, materials and safety standards. With experience, a roofer will be able to effectively manage potential challenges and guarantee quality work.

Ask any roofer you are interested in hiring how long they have been in the business and find out what types of roofing projects they have worked on. It’s always better to hire a professional who has completed a variety of projects and is familiar with different types of roofing.

Tip #6: Ask your roofer for references

In addition to being qualified, your roofer should also be able to show specific achievements that are similar to your current project. Different roofing contractors specialise in different types of jobs. For example, a roofer may be highly skilled in providing pitched roof services, but that doesn’t mean they have the experience to offer quality flat roof services.

Tip #7: Insurance and guarantees

Before signing a contract with a roofer, verify that they have professional liability insurance. This insurance ensures that the roofer will cover the cost of any damage to property or injuries sustained on site.

In addition, make sure the roofer offers a warranty to guarantee that the roofer will remain responsible for any problems related to the quality of their work for a specified period. Check the terms and duration of the warranty and make sure you understand the conditions.

Please note: A roofer’s warranty could be affected by the number of years they have been in business! Roofers normally provide a 5 to 10-year warranty, but if the company is relatively new, you may not be certain that it will remain in operation for the full length of their warranty.

Tip #8: Get Quotes from several roofing contractors

It’s very important to approach several roofing contractors and request quotes from all of them. In fact, it’s the first thing you should do when thinking about having your roof installed, repaired or renovated.

The Régie du bâtiment du Québec (RBQ) recommends that you compare a minimum of 3 estimates to make an informed choice. You will be happy to know that many roofers are willing to offer free quotes.

Confirm that the following elements are included in each roofing quote:

  • Worksite security measures
  • Waste management
  • Warranty on the work
  • RBQ license number
  • Liability insurance
  • Certifications (certified installer)
  • Workforce certification
  • Associations (CAA, etc.)

Once you have several quotes in hand, examine them carefully, taking your time to verify important points:

  1. Price: Make sure you understand what’s included in the estimate, and check whether any additional charges may apply to the total cost. Keep in mind that choosing the cheapest roofer does not necessarily guarantee the highest quality of work.
  2. Timetable: Check the timetables provided with each estimate. If you have specific time constraints, make sure the roofer can meet your requirements.
  3. Materials: Verify that the materials the roofer intends to use are good quality and appropriate for your project. Check whether the roofer can use any specific brands or types of materials (asphalt shingles, elastomeric membrane) that you have already chosen for your project.
  4. Services: Some roofers may include services beyond the basic roofing job, such as clean-up or waste removal after the work is done. Make sure you understand what’s included in the estimate and what isn’t.

Be wary of low quotes

When comparing estimates, be cautious of offers that seem abnormally low. Very low prices may be a sign of inferior workmanship, poor quality materials or a company seeking to attract customers by lowering their standards.

A professional, experienced roofer will offer a competitive but realistic quote. If an offer seems too good to be true, ask the roofer for an explanation. Consider the factors mentioned above and make a decision based on the quality of the work and the roofer’s reputation, not just price.

Tip #9: Check with the Office de la protection du consommateur

Think you’ve found the perfect professional roofer for all your roofing installation and renovation projects? You should still pause before signing the contract.

Now is the time to verify if there have been any complaints about this contractor. First, check with the Office de la protection du consommateur. Also, verify their RBQ license number online one more time, as some unreliable companies may use a false number.

You can also check to see if the roofer you are considering hiring is recommended by CAA Approved Residential Suppliers. This certification confirms that a roofer is top quality by evaluating customer satisfaction, the quality of their work, their communication with customers and their ability to stick to deadlines. A certified roofer will generally work hard to maintain their CAA status.

Tip #10: Make sure you hire a specialist and not a general roofer

Most of the best roofers are specialists, not generalists. While there are many different types of contractors who may seem capable of doing a roofing job, we recommend professionals who focus specifically on roofing (installation and repair), roof insulation, roof framing, tinsmithing and other aspects of roofing.

You know you’ve found the right roofer if they are a professional who is up to date on the latest developments in the field (best materials, roof ventilation, roof sealing systems, best installation practices, etc.). Make sure your roofer has roofing systems certifications from several manufacturers and organizations. This can make a major difference in getting the job done right.

Les Couvreurs Duro-Toit: the best in Montreal?

Make sure you hire a contractor that will give you a good return on your investment!

Better references, better quality/price ratio, better record with the Office de la protection du consommateur (OPC) – there are many things that can influence your decision when choosing the right roofing contractor. Be careful and don’t compromise! A poorly installed or badly renovated roof can cause you many problems and significant additional expenses later on.

Contact our technical consultants now for a quote and you’ll find out why Duro-Toit is the leading roofing company in the greater Montreal area!

How to Repair an Asphalt Shingle Roof

Asphalt shingles can wear out over time or from exposure to the harsh Quebec weather. If you notice broken, cracked or missing shingles on your building, act quickly to avoid bigger problems like water leaks or seepage.

Whether you’re a DIY enthusiast or you prefer to call in a professional, this technical job requires some special knowledge and practical expertise. It’s a job that must be done properly to guarantee a fully functioning, trouble-free roof.

To help you protect your building, our Montreal roofers explain when and how to repair an asphalt shingle roof!

What are the signs that asphalt shingles need repair?

Identifying signs of wear and tear is the only way to decide when to replace or repair asphalt shingles. You may be surprised to learn that some types of damage demand urgent roof repairs.

Visible discolouration

Increased exposure to the sun, especially on south-facing homes, can lead to the shingle discolouration. This is a problem that mainly affects your home’s appearance, but it can also be a sign of more serious underlying problems.

As soon as you notice discolouration on asphalt shingles, take a closer look or hire professionals to examine or renovate your pitched roof.

Broken or lifted shingles

Broken or lifted asphalt shingles are another sign of wear and tear that shouldn’t be taken lightly. These can be signs of a faulty roof coating, improper installation, or overheating caused by insulation or ventilation issues. In winter, broken or lifted asphalt shingles can lead to seepage and other problems.

Granule loss is not as severe as breakage, but it is another sign of aging. If asphalt shingles warp, there is likely a problem with the substrate beneath them. If the base is made of wood, it’s possible that humidity has caused swelling or contraction. This is not the same as uplift and needs your urgent attention!

Missing shingles

If sections of asphalt shingles are missing, it’s usually because they’ve been torn off by wind or other severe weather. Roof maintenance or snow removal can also result in torn shingles, especially if you use the wrong tools or techniques.

Missing nails or glue can also lead to lost shingles. Whatever the cause, missing roof parts need to be replaced immediately to prevent larger problems that could affect the entire building. If you wait and the condition of your roof worsens, you may have to replace the entire asphalt shingle system.

While wear and tear on asphalt shingles is unavoidable over time, some shingles are more durable than others. Keep this in mind when making a purchase.

Moss and moisture

Often the only visible evidence of moisture on roofs is moss on the rooftop or mold in the attic. Black or brownish stains can also indicate that roof moisture has spread to the cladding. A simple way to protect your building is to clean your asphalt shingle roof regularly.

If the moisture problem spreads to the entire structure, a complete re-roof may be necessary. Before proceeding, get a professional roof inspection. It takes an experienced professional to give you appropriate advice.

Preparing for asphalt shingle roof repairs

Before you begin repairing your asphalt shingle roof, you will need to get ready. There are a few important points to consider.

Tools and materials

Make sure you have all the necessary tools and materials at hand before starting the repair.

  • Claw hammer: for removing nails and damaged shingles
  • Utility knife: to cut and remove damaged shingles
  • New asphalt shingles: replacement shingles that match those already on your roof
  • Roofing nails: to secure new shingles in place
  • Wire stripping pliers: to remove damaged shingles
  • Roof mastic: to seal shingles and make the roof watertight
  • Secure ladder or scaffolding: for safe access to your roof
  • Work gloves and goggles: to protect you during the repairs

With all necessary tools and materials ready, you’ll avoid unnecessary trips back and forth, and you can devote your full concentration to your roof repairs.

Safety precautions

Safety should be a top priority when repairing your asphalt shingle roof. Make sure to verify the security of the site and equipment before climbing on your roof! Here are some essential precautions:

  • Use a strong, safe ladder, and verify that it is stable before climbing onto your roof.
  • Wear non-slip shoes to avoid slipping on shingles.
  • If possible, work in pairs. Having someone else on site can make the process safer and more efficient.
  • Avoid working on your roof in windy, slippery or rainy conditions.
  • Make sure the area around your ladder is clear of people and debris while you’re working.
  • If you’re not comfortable with working at height, consider calling in a professional to do the repairs for you.

By taking these safety precautions, you can minimize the risks involved in repairing your roof, and work with peace of mind.

How to repair asphalt shingles

Let’s get down to the nitty-gritty of repairing an asphalt shingle roof. There are six key steps in the process:

Step 1: Clean the affected area

Before beginning repairs, clean the damaged area of your roof thoroughly. Remove any debris, dirt or residue that could get in the way. Use a stiff brush or broom to remove leaves, branches or other foreign matter.

Step 2: Remove damaged shingles

Use a claw hammer to remove all nails, being careful not to damage adjacent shingles. Use a utility knife to dislodge and remove the damaged shingles.

Step 3: Prepare the surface

Before installing new shingles, you have to prepare the raw surface. If your roof’s underlayment is damaged, now is the time to replace it. Make sure the surface is clean, dry and smooth. If necessary, remove any adhesive or mastic residue.

Step 4: Install new shingles

Now it’s time to install the new asphalt shingles. Start by aligning the first shingle and nailing it down. Continue with other shingles, following the manufacturer’s guidelines for overlap, making sure as you go that your asphalt shingles are always in line and spaced equally.

Step 5: Securing and sealing shingles

Use roofing nails to secure your new asphalt shingles. Make sure you drive them in deep enough to anchor them securely to the surface. Next, apply roofing adhesive or mastic to the edges of the shingles to seal them. Proper sealing helps prevent water infiltration and makes your roof more durable.

Step 6: Final inspection and site clean-up

Once the repair is complete, take the time to inspect your work. Check that your asphalt shingles are properly attached, aligned and sealed. Make sure there are no damaged or missing shingles left to replace. Collect all debris and waste from the repair and make sure you leave the area clean and safe.

Caution: Never attempt to install new asphalt shingles on top of the existing shingles. If you want your roof to be watertight, shingles must be installed on a flat, even surface. 

Preventing future damage to asphalt shingles

Once you’ve repaired your asphalt shingle roof, there are a few things you can do to prevent further damage:

  • Regular roof maintenance: Schedule periodic roof inspections to detect any early signs of damage or wear. By spotting problems at an early stage, you’ll be able to treat them quickly and prevent them from getting worse.
  • Debris removal: Clean your roof regularly. Leaves, branches and other debris can trap moisture and cause shingles to deteriorate.
  • Moss and fungus control: Keep an eye on your roof, and if you spot moss, lichen or fungus, use specialized products or call in a professional to eliminate them safely.
  • Manage water build-up: Check that your rain gutters and drainage systems are in good working order. Water build-up can lead to infiltration and damage, so clean your eavestroughs regularly to make sure they are properly draining water away from your roof.
  • UV protection: Apply a protective coating or use asphalt shingles with UV protection to minimize the degradation caused by UV rays.
  • Tree pruning: Prune nearby trees regularly to prevent branches from rubbing against shingles during turbulent weather.

With regular maintenance and vigilance, you can extend the lifespan of your roof and minimize the risk of future damage.

Contact Duro-Toit Roofers for asphalt shingle repairs

Repairing an asphalt shingle roof may not seem that complex, but not everyone can do the job. Working at height on a roof involves a certain element of risk, in addition to the knowledge needed to detach and install shingles correctly and safely. Calling on specialized roofers is often the best solution.

At Duro-Toit, we understand the importance of a healthy roof, and our professionals have everything it takes to do professional and reliable repairs.

Contact us today! Our team will be happy to repair your asphalt shingles safely and efficiently.

How to Choose the Best Asphalt Shingles

When it comes to choosing the best asphalt shingles for your roof, you should look for a durable, long-lasting and aesthetically pleasing product. Quality asphalt shingles are especially important in Quebec’s harsh climate, and choosing shingles wisely involves several factors.

Every property has its own specific needs, and if you consult a roofing professional, you can benefit from personalized recommendations.

In this article, our Montreal roofers present the main factors involved in choosing the best asphalt shingles, while introducing you to the trusted brands available in Quebec.

Types of Shingles

The asphalt shingles available in Quebec each offer different levels of durability, resistance and aesthetic appeal. Here are some of the most common types of asphalt shingle.

Fiberglass shingles

Fiberglass shingles are reinforced with a fiberglass mat, making them lightweight, durable and weather-resistant. Manufacturing fiberglass shingles requires less asphalt than organic shingles, making them much lighter and less expensive to create. They are often coated with mineral-fortified asphalt and coated with a layer of pigmented ceramic granules for additional UV protection. Fiberglass shingles come in a wide variety of colors and styles to suit different architectural designs.

Organic shingles

Organic shingles are reinforced with natural raw materials like cellulose. They are heavier than fiberglass shingles and offer excellent resistance to wind gusts due to their weight. The manufacturing cost of these shingles is higher, given the quantity of asphalt required to produce them. Organic shingles are also much more sensitive to temperature variations than fiberglass shingles, making them more prone to lifting and premature wear. However, fiberglass shingles offer better durability, making them a more popular choice.

Laminated shingles

Laminated shingles are layered asphalt shingles that mimic the appearance of traditional wood shingles while offering the benefits of asphalt. These shingles offer classic aesthetics and superior durability. Be sure to consider the quality of the lamination when you are choosing which shingles to use, as some manufacturers use more efficient laminating techniques than others.

Architectural (dimensional) shingles

Architectural or dimensional shingles are designed to mimic the appearance of high-end roofing materials like slate or wood. Their three-dimensional shape gives them a thicker, more textured appearance, offering an elegant, sophisticated aesthetic in addition to the durability and ease of installation of asphalt.

Each type of asphalt shingle has its own advantages and limitations. We recommend that you consult a roofing professional to determine the type of asphalt shingle best suited to your project.

Factors for choosing quality asphalt shingles

Choosing the right asphalt shingles for your roof involves carefully considering several factors, including durability, style and the length of the product warranty.

1. Durability and resistance

Asphalt shingles need to be durable and able to resist a variety of threats to effectively protect your roof for a long time.

Weather resistance

Asphalt shingles should be able to withstand strong winds, heavy precipitation (both rain and snow), and both high and low temperatures. Make sure the shingles you choose are specifically designed to withstand the challenges of Quebec’s climate.

Fire-resistance rating

The fire resistance of your roof is important for the safety of your entire home. Asphalt shingles are available with different fire-resistance ratings, and you should always choose shingles with the highest possible fire resistance.

UV resistance

Asphalt shingles can prematurely degrade due to ultraviolet (UV) rays from the sun. Check whether the shingles you’re considering include UV protection, as this feature will extend the lifespan of your roof.

2. Aesthetics and style

The look and style of your asphalt shingles will affect the overall appearance of your roof and building. Consider the following:

Color and texture

Asphalt shingles are available in a wide range of colors to suit different architectural styles and personal preferences. Whether you prefer neutral hues, bright tones or textured finishes, it’s possible to choose shingles that match your building. Consider the color of the facade and the surrounding environment when making your choice.

Harmony with the architectural style of the building

Whether your structure has a traditional, contemporary or modern design, choose shingles that complement and enhance the overall look of the structure. Manufacturers often offer specific collections of asphalt shingles designed to match different architectural styles.

3. Ease of installation

Consider how easy it will be to install asphalt shingles. This is especially important if you plan to shingle your pitched roof yourself.

Shingle size and weight

Asphalt shingles come in different sizes and formats. Some are easier to handle and install than others. If you’re new to asphalt shingle installation, we recommend opting for standard-size shingles. Also, check the shingle weight – lighter claddings can be easier to transport and install.

Installation system

Some manufacturers offer product-specific installation and assembly systems. These may include installation guides, detailed instructions and complementary accessories. When choosing your asphalt shingles, ask if there is an installation system available.

4. Warranty

The warranty is an important factor to consider when choosing asphalt shingles. It is reassuring to know that the product is backed by the manufacturer in the event of problems or defects. Here are two things to keep in mind:

Warranty period

Look for asphalt shingles with extended warranties, as this shows manufacturer confidence. Some brands offer warranties of up to 50 years or more, providing long-term protection.

To qualify for this type of warranty, installation must be carried out by a certified and recognized roofer.

Coverage of manufacturing defects

Be sure to read warranty terms and conditions carefully to verify whether they include protection against defective shingles, sealing problems, premature delamination, etc. Remember to check whether the warranty covers the costs of labour and repairs.

A good warranty should protect both your roof and your investment.

The best asphalt shingles on the Quebec market


  • Warranty period: Limited lifetime warranty (granted to the initial owner or to the next owner under certain conditions) or Extended warranty (50 years at 100% if installed by a certified roofer)
  • Extended warranty of up to 50 years (subject to certain conditions)
  • Wind warranty: Between 180 and 220 km/h
  • Algae resistance period: 10 years


  • Warranty period: Lifetime warranty for owners of single-family detached homes and 40 years for other types of owners or buildings
  • Wind warranty: 15 years for winds up to 209 km/h with special installation
  • Algae resistance period: 25 years on HDZ shingles.


  • Warranty period: Limited lifetime warranty with one of the best firm protection warranties on the market
  • Wind Warranty: Applies toCambridge (177km/h) or Performance (210km/h), available in a wide choice of colors
  • Algae resistance period : 10 years
  • 100% Canadian product,designed for Canadian families.

Duro-Toit Roofers help you choose the best asphalt shingles

Choosing the best asphalt shingles for your roof will ensure both the comfort and aesthetic value of your building. You can make an informed decision if you remember to consider durability, resistance, aesthetics, installation ease, warranty coverage and the different types of shingles available.

Les Couvreurs Duro-Toit understands the importance of choosing superior quality asphalt shingles for your roof. We are committed to providing you with the best roofing products on the market.

Contact us today to discuss your project. Our technical advisors will take the time to guide you toward the best solutions available.

How Long Does a Roof Last in Quebec?

If you’re investing in a new roof in Quebec, Canada, you probably want to know how long it will last. The roof is one of the most important structural elements of a home, and it has to be capable of withstanding all the elements, from high winds to snow and hail.

The lifespan of a roof depends on several factors, including the type of roofing material, the installation quality, the level of exposure to the elements, and local weather conditions.

Our Montreal roofers take a closer look at the potential lifespan of both pitched (sloped) and flat roofs in Quebec. We also offer tips on how to extend the lifespan of your roof and avoid costly repairs.

Typical roof lifespan

The lifespan of a roof depends on many things, including the type of roofing materials you choose, how often you maintain your roof, the type of weather it is exposed to, etc. In general, a well-maintained roof can last anywhere from 15 to 50 years, and in some cases even longer.

Asphalt shingle roofs, the most common for residential homes, generally last 15 to 25 years. Metal roofs, on the other hand, can last up to 50 years or more, while tile roofs can have a lifespan of up to 100 years.

Generalizations aside, the actual lifespan of a roof is affected by external factors. For example, if your region experiences extreme weather conditions (as in Quebec), your roof may deteriorate more quickly. Similarly, poor installation or lack of regular maintenance can noticeably shorten the lifespan of your roof.

It is important to monitor the condition of your roof and schedule a professional inspection every few years, to confirm it is in good condition and detect any signs of damage or wear. This way, you can extend the life of your roof and avoid the high cost of premature roof replacement.

Lifespan of a flat roof

The durability of a flat roof depends on several factors, including the type of membrane you choose to install.

It is important to know what your options are so that you can choose the right membrane for your specific situation.

Multi-layer asphalt and gravel membrane

Flat roofs equipped with a multilayer asphalt and gravel membrane tend to deteriorate after prolonged exposure to the sun. UV radiation causes the asphalt to lose its oils and form cracks, compromising the flat roof’s membrane system. This is a bigger risk for roofs where the gravel has moved and is no longer shielding the asphalt against the sun.

If neglected, a multi-layer asphalt membrane will need to be replaced every 10 to 15 years. However, if you make sure that the gravel stays in place, provide proper drainage and promptly repair any cracks in the membrane, it could last for 15 to 20 years.

Elastomeric bitumen membrane

Installing an elastomeric bitumen membrane on a flat roof costs more, but the expense is justified by this product’s long life and easy maintenance. As an added bonus, white membranes have a solar reflectivity index (SRI) that contributes to increased comfort and lower air conditioning costs during hotter months.

The average life of an elastomeric bitumen membrane is 20 to 25 years. If yours is installed by a professional and maintained every two years, it can easily last over 30 years, especially if your roof system components are optimal.

Single-layer EPDM and TPO membranes

EPDM and TPO single ply membranes are environmentally friendly flat roof coatings that are well-suited to large roofs. They do not require much maintenance, but they do need to be monitored if exposed to hot sun, as is common in Quebec, to make sure they remain watertight.

Many homeowners opt for this type of membrane because it is not expensive. Under optimal conditions, these membranes can remain functional for more than 20 years.

Lifetime of a pitched roof

Pitched, or ‘sloped’ roofs are the most common type of roof on residential homes. They are often constructed using asphalt or wood shingles, or clay or concrete tiles. Their lifespan varies depending on the type of material, and the quality of installation and maintenance.

Asphalt shingles

Asphalt shingles are the most common for sloped roofs and last an average of 20 to 30 years. Some manufacturers offer a warranty of up to 50 years. Proper installation and regular maintenance can significantly extend the useful life of asphalt shingles.

Clay or concrete roof tiles

Clay or concrete tiles are more expensive than asphalt shingles, but they also last longer. Clay tiles can last from 50 to 100 years, while concrete tiles can last up to 50 years.

Tiles are not suitable for all types of buildings as they are heavy and not 100% waterproof. Contact a professional roofer to help you choose the right roofing material!

Cedar shingles

Cedar shingles are a more expensive option, but they offer a unique aesthetic. They usually last about 50 years, but regular maintenance, such as using anti-moss treatments and repairing cracks, can make them last longer.

In general, pitched roofs require regular maintenance to make them last as long as possible. This means regularly inspecting shingles, cleaning rain troughs and replacing damaged or missing shingles.

Metal roofing

Metal roofs generally last longer than other types of roofs – from 30 to 50 years. However, several factors can influence this, including environmental conditions and the quality of both installation and maintenance.

When to renovate your roof

Knowing how long your roof should last is one thing. You’ll still need to know exactly when to replace your roof to avoid serious problems. In general, a roof should be renovated every 20 to 25 years, but the type of materials used and your maintenance schedule will affect this.

There are signs other than a roof’s age that indicate it should be replaced. If you notice water leaks or seepage into your home, missing or damaged tiles, blisters or cracks in the roof materials, roofing granules in the rain troughs, or your roof looks discolored or faded, it’s time to pay attention.

Remember that if you plan to sell your home, an aging roof can significantly reduce its value. Renovating your roof before putting it on the market will help you get the best price possible.

Preventive roof maintenance and repair

Regularly inspecting a roof membrane is one way to make sure it lasts as long as possible. You can verify the condition of the membrane by checking the state of the roof, the solidity of the structure, the waterproofing of the building, and the integrity of roofing materials and their resistance to bad weather. If anything is out of order, you can make repairs before your building is damaged by water infiltration

Periodic roof inspection is also the best way to find out whether your home is properly ventilated and insulated. This can significantly impact the lifespan of your roof, as is proven by the fact that these elements are included in manufacturers’ warranties. It is a fact that poor ventilation or insulation prematurely wears out roof membranes.

Make your roof last longer with Duro-Toit!

The lifespan of a roof depends on several factors including the type of roofing material, local weather conditions and your maintenance schedule. It is always important to monitor the condition of your roof for signs of deterioration like leaks, mold and warping.

A healthy roof is essential to protect your home and family from the elements and to prevent long-term damage. By relying on professional advice and services for taking care of your roof, you can make it last longer and avoid unnecessary costs.

To maximize the return on your investment, trust Duro-Toit with your roof repair and maintenance.

Contact us for a free quote!

When Should You Replace Your Roof?

The roof is one of the key elements of your house. It not only protects your family and possessions from the elements, it can also impact the building’s energy efficiency. Over time, a roof can be damaged by weather and UV rays and will eventually need to be replaced or repaired.

If you wait too long to renovate your roof, existing damage could become more extensive, leading to increased repair or replacement costs. What is the right moment to replace your roof? And what is the best season for getting the job done?

Our Montreal roofers help you answer these questions. Learn to recognize signs that it’s time to renovate your roof, and find out what your re-roofing options are.

4 signs that you need a new roof

The first step is being able to recognize the signs that your roof has reached the end of its useful life.

Contact a roofing contractor as soon as you notice any of the following clues, to avoid problems and preserve the value of your property.

Your roof is old or poorly maintained

Generally speaking, professional roofers estimate the lifespan of a flat roof to be between 15 and 25 years. Although it is highly recommended to inspect your roof annually, if yours is more than 15 years old, you should probably have it inspected by a professional.

Of course, if you’ve always taken good care of your roof, it could still be in excellent condition and may only need some minor work. On the other hand, if you’ve never really noticed the condition of your roof, it may already be in need of replacement even though it may still be relatively new.

Missing or damaged tiles or shingles

Damaged roofing materials can show several signs that they are no longer performing as they should be.

If you notice missing tiles or shingles, or your roof membranes appear damaged, your roof needs to be replaced. Damaged tiles, shingles, and membranes make your roof more vulnerable to the weather, which can lead to further damage to the building.

Water leaking through the roof

If you notice wet spots or water leaks in your home, it may indicate a roofing problem. Water leaks can be caused by holes or cracks in a roof, missing sealant, or even faulty insulation.

The first signs of water leaking through a roof are often brownish stains on the ceilings. If water has made its way to the ceiling, chances are that your roofing materials and other structural components are also wet.

In this case, you may need to do more extensive work including roof insulationstructural and decking work and replacement of your roof sealing system.

Damp or moldy insulation

If you notice wet or moldy insulation in your attic, this could indicate that your roof is damaged. Mold can grow on wet insulation, which can cause health problems for occupants.

You may also notice that moss, algae and even fungus has taken root on your roof. These will not only affect how your roof looks, but also accelerate its aging. They can also be the symptom of a moisture problem due to a ventilation or insulation flaw, which will require more than a roof cleaning.

If you notice any of these signs, contact a professional to assess the condition of your roof and help you decide if it is time to replace or repair it. Regular monitoring of your roof can always help you detect potential problems before they become more serious.

How often should you replace your roof?

Any roofer will tell you not to procrastinate on roofing work. As soon as signs of wear and tear appear, or you suspect that your roof is not performing as it should be, contact an expert.

Professional roofers can inspect your house thoroughly and verify whether any deeper or sometimes unnoticeable damage has occurred. They can also recommend the best course of action and appropriate materials for your roofing project, in addition to letting you know how soon your roof should be repaired.

What is the best season to replace your roof?

Choosing the right season for roof repairs can impact the duration and cost of the work as well as the quality of the result. Learn about the advantages and disadvantages of each season so that you can choose the best time to re-roof.


Fall is a great time to replace your roof. Various factors make it easier for roofing crews to work during the transition between summer and winter.

Low humidity levels and milder temperatures are real advantages for roofing crews. Quebec roofers appreciate the cooler temperatures of fall, which offer far greater comfort while they work on exposed rooftops.


Early summer is the busiest time of year for roof repair and installation work. June, July and August offer the advantage of long, sunny days – pleasant weather and warm temperatures help the adhesive strips embedded in asphalt shingles to bond correctly.

However, while the heat can help roof coating to stick, the extreme temperatures of summer can pose a challenge for roofers. In fact, roofing on a hot day can be difficult and potentially dangerous, even for experienced professionals.

Don’t worry – Duro-Toit makes occupational health and safety a priority and will take these factors into account to ensure a safe and quality job!


Spring is also a good time to renovate your roof. Outdoor temperatures increase and humidity levels are generally lower than during the summer. Also, roofing contractors are often less in demand at this time of year, so it’s easier to find a roofer more quickly than in summer or fall.


Contrary to popular belief, it is possible to repair a roof in winter. Modern technology allows building sites to function in a variety of conditions.

Despite this, you still need to consider the accessibility of the work site, especially road conditions. In a typical Quebec winter, you will need to guarantee snow removal before certain crucial stages of construction. This task is responsibility of the building owner or the roofing professional running the project. Learn what snow removal on a pitched roof or a flat roof involves.

You will need to anticipate additional costs associated with preparing surfaces and materials for winter conditions. Projects carried out in winter cost roughly 20% more than those completed during the summer.

What are the benefits of re-roofing?

Re-roofing can bring many benefits to your building, including:

  • Improved safety: A roof in poor condition can be dangerous for the occupants of your building. Water leaks can cause damage to the structure, insulation and vapour barriers and eventually lead to a collapse. By replacing your roof, you improve the safety of your building and protect its occupants and your property.
  • Reduced heating and cooling costs: A functional roofing system helps maintain the temperature of your building. It can retain heat in the winter and keep your home cool in the summer, which can reduce heating and cooling costs.
  • Increased property value: A new and professionally installed roof can improve the appearance of your building, attract potential buyers and increase the resale value of your property.
  • Reduced renovation costs: If your roof is in good condition, it can save you the trouble of having to replace other elements of the building that could be damaged by poor roofing. A healthy roof means a healthy building!

Re-roofing your building can offer many short- and long-term benefits. Working with a professional roofer is the best way to ensure that your new roof is installed correctly and meets your needs.

The cost of a roof renovation

The cost of a roof renovation can vary greatly depending on several factors, such as the size of your roof, the type of roofing material, the complexity of the installation, the number of accessories, elements of the waterproofing system and the region where you live. Here are a few guidelines to give you a general idea:

  • The size of the roof: The cost of your roof renovation will be influenced in large part by the size of your roof. The larger the roof, the longer the job will take and the more materials will be required.
  • The type of roofing material: The materials you choose will affect the price. Asphalt shingles are generally less expensive than metal or tile roofing materials, but the latter have a longer life span and may be more resistant to weather.
  • Roof system components: Some roofs require vapour barriers, support panels, rigid insulation and even sloped insulation. These components can be expensive and require extra effort during installation, leading to additional labour costs.
  • The number of accessories: The more accessories, the longer the work will take and the more it will cost. The cost of the accessories themselves will also have to be factored in.
  • The complexity of the installation: If your roof has complex shapes or steep slopes, the work will be more difficult and will therefore cost more.
  • Where you live: Costs can be higher in larger cities or remote areas where materials have to be transported over greater distances. The cost of transporting materials and workers is a separate expense added to the total contract. In urban areas, road permits may be required to complete the work, which can be expensive!

The cost of roof repair

Typically, the cost of a roof renovation ranges from $5,000 to $35,000, depending on the factors mentioned above. We recommend asking for quotes from several contractors to get a realistic idea of what your roof renovation will cost.

Schedule your roof repairs with Les Couvreurs Duro-Toit

In conclusion, the best answer to the question of when to replace your roof is: as soon as maintenance and repairs aren’t enough! Re-roofing will limit the extent of any problem and prevent damage to other parts of your property.

When it comes to choosing the best time of year to plan a roofing job, there are many factors to consider. But remember, since roofing can now be done in the winter, you shouldn’t wait for the snow to melt if your roof is failing in the middle of January.

Have you decided that it’s time to replace your roof or at least have it inspected? Contact our team today!