Category: Commercial

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.

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.

Balcony

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!

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!

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 insulation, structural 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.

Autumn

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.

Summer

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

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.

Winter

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!

A sagging roof can quickly become a major problem if it isn’t promptly repaired by a professional. You may notice the issue when looking at your roof covering—if it seems to have shifted or has a hole in it, your roof may be sagging. 

Les Couvreurs Duro-Toit explain how to recognize the signs of a sagging roof and act on them before the problem gets worse. 

What causes a roof to sag?

The first thing you need to know about a sagging roof is that the frame may also be affected. You may notice sagging on the roof or on the wooden frame itself. 

This type of sagging can have significant consequences. If the problem is left for too long, the following may occur: 

– Your roofing may warp

– An increased risk of water infiltration and mould growth 

– The roof may crack 

– The roof may collapse 

To prevent this from happening, it’s important to check: 

– How your roof truss is aging 

– Ground movement, particularly if you are located in a high-risk area 

– Cracks, water infiltration and mould

– Snow accumulation and ice dams on your roof during winter

– The state of your insulation and ventilation 

– The presence of pests

How to fix a sagging roof

An ounce of prevention is worth a pound of cure. The best solution for a sagging roof is to prevent it from occurring in the first place. Keep an eye on the condition of your roof, and have a professional conduct inspections regularly. They will be able to tell you what shape your roof is in and what you need to do to maintain it.

Call a professional 

If you’re concerned about the condition of your roof, the first thing to do is call a professional. If your roof is sagging, we recommend having a professional inspect it as soon as possible. They can even perform thermal imaging to help determine the cause! 

Once they have made an on-site assessment, they will be able to give you a detailed report and recommend solutions to address the cause of your sagging roof.

Address the cause of the sagging roof 

If your roof is sagging due to wood-eating insects that are weakening its structure, getting your roof treated will be an integral part of the solution.

With pest control treatment and regular roof maintenance, you may be able to mitigate the sagging caused by the infestation.

You will still need to do partial renovations, such as filling in any holes, in order to make your roof serviceable again.

Sagging roof repair

In the worst-case scenario, if the sagging is caused by the roof’s age or poor condition rather than pests, you will have to carry out extensive renovations or replace the roof entirely. 

Unlike pest control treatment, replacing the roof comes with a steep price tag, so do everything in your power to avoid ending up in this situation.

Who to contact for a sagging roof 

Regardless of the cause and extent of your roof sagging problem, you will need to contact roofing and structural professionals like Les Couvreurs Duro-Toit. 

Make sure to choose your roofer carefully in order to avoid any fraudulent activity or unfinished work. 

It’s best to contact your insurance company the moment you notice roof damage to inquire about the details of your coverage.

Insurance coverage for a sagging roof 

In Canada, home insurance policies differ from province to province, but there are certain conditions that are consistent throughout. Generally speaking, sagging roof repairs will be covered if the problem is caused by environmental conditions such as wind, ice, hail or water damage.

Note that this is a generalization—contact your insurance company to obtain the details of your coverage.

Contact Les Couvreurs Duro-Toit for sagging roof repairs

A sagging roof is a situation that can become increasingly dangerous over time. To mitigate the damage and avoid any additional complications, it’s best to contact a professional roofer without delay. The experts at Les Couvreurs Duro-Toit offer renovation services for flat roofs and pitched roofs throughout Montreal and the surrounding area. Contact us for all of your roof inspection and renovation needs!

Insulation is a very important aspect of both residential and commercial buildings. In addition to reducing heat loss, it also protects the building’s inhabitants from inclement weather, which can be quite intense in Quebec! Insulation can also make attic spaces warm and habitable, despite their proximity to the roof.

It can be difficult to decide whether to insulate a roof from the inside or the outside, but it must be done in order to make the building comfortable for its inhabitants. 

Find out how to insulate your roof from the inside in this article from the experts at Les Couvreurs Duro-Toit. 

1. Choose your roof insulation

There are different types of insulation available for roof construction and renovation. That being said, not all kinds of insulation work for every method of installation. To avoid any confusion, here are the kinds that can be used to insulate a roof from the inside.

Mineral wool

Mineral wool, also known as rock wool or glass wool, is an inexpensive insulation material. Its names come from its composition, which is usually either melted fiberglass (glass wool) or molten rock (rock wool).

The material is called wool because the way it is manufactured creates a dense material similar to animal wool. This insulation material has the following properties:

– Non-flammable 

– Excellent thermal insulation

– Easy to install

– Does not absorb moisture, preventing the formation of mould

– Acoustic insulation 

Insulation board 

When insulating a roof, homeowners sometimes want to insulate an unused attic to convert it into a habitable space. In addition to insulating the structure, insulation board leaves a smooth finish that serves as a good base for converting the attic.

This rigid or semi-rigid material has acoustic properties that reduce sound coming from the roof or attic. It is considered the material of choice for under-roof insulation.

Polyurethane foam

Once used to stuff furniture such as sofas, polyurethane foam has become a high-performance insulator that lacks popularity despite its superior thermal resistance. It is less commonly used partly because it is more expensive than mineral wool or insulation board and requires installation by a specialized company.

Furthermore, there is a certain amount of controversy concerning the foam’s potential health risks, which has limited its use.

That’s why it’s important to find a good roofer who can provide you with as much information as possible about this kind of insulation. 

Cellulose fibre or wadding

Cellulose is the most eco-friendly insulation on the market. It is made by processing recycled newspaper and has a good quality/price ratio.

Cellulose fibre is also known as blown-in insulation because of its installation method, which can fill a space quickly and completely. It can be installed anywhere in the house, including the roof, except for the basement, which is too humid for this type of insulation.

Cellulose material is sprayable, safe, sustainable and has good thermal insulation, but it must be installed by professionals.

2. Calculate how much insulation to use 

Once you’ve decided which insulation you want to install, you’ll need to calculate the amount required based on the material’s R-value and the scope of your project.

The best strategy is to contact an energy consultant to perform an assessment and determine the amount of insulation needed. 

Ideally, the consultant will try to meet the following R-values for your roof: 

– Attic: R-60

– Pitched or cathedral roof: R-30

3. Use the right method to insulate a roof from the inside

The installation method will depend on the type of insulation you choose.

For example, insulation board and mineral wool must only be installed after any holes or tears in the vapour barrier have been sealed to prevent air from getting in. Then, at least two layers of insulation must be installed to reach the recommended R-value.

Insulation materials such as polyurethane foam and cellulose fibre require installation by professionals who are familiar with the proper method.

Call on Les Couvreurs Duro-Toit to insulate your roof from the inside 

Depending on the type of insulation you choose for your project, you may need roofing professionals to take care of the installation. 

Les Couvreurs Duro-Toit have all of the roofing and insulation expertise required to work in accordance with local regulations and help our clients successfully complete the projects that matter most.

Contact us today to make the most of our experience in Montreal and the surrounding area.

Made of wood, steel or concrete, roof decking is a layer that protects the roof from the elements. Once installed, it becomes a vital part of the roof’s support structure.

In this article, Les Couvreurs Duro-Toit explain everything you need to know about roof decking for construction or renovation purposes.

Decking: a vital part of the roof

Roof decking is part of a building’s structure that is placed underneath the roof covering, like the elastomeric membrane that is commonly used throughout the province of Quebec.

The decking acts as a support structure for the roof covering, which can be installed by specialists. Placed between the frame and the covering, roof decking helps insulate the roof and strengthens the entire structure. That’s why it needs to be carefully monitored for signs of deterioration.

In practical terms, roof decking is a set of panels that are placed directly on the frame. It completes the roof structure by filling in the spaces in the frame so that the roof covering can be installed according to provincial standards.

Roof decking can be installed on a pitched or flat roof that will require a covering.

Why install roof decking?

As mentioned above, roof decking plays a vital role in supporting the roof covering and is an integral part of the building’s structure. Without it, it would be impossible to install the waterproofing system, leaving your roof exposed to inclement weather such as rain, snow and heat waves.

Makes the roof more solid

In the 60s, residential buildings had roof decking made from wooden planks. Although wood is certainly not in short supply in Quebec, use of the raw material has declined in favour of engineered wood products like OSB and plywood.

These materials are thinner and lighter, making them easier to install on the frame while still providing added strength and solidity to the entire structure.

With roof decking in place, roofers can easily install waterproofing.

Extends the roof’s lifespan 

Solid decking can improve a roof’s durability and by extension, its lifespan. Conversely, poorly-executed decking can have a negative effect on the entire structure, particularly since the roof covering is installed on top of it.

That’s why roof decking requires professional installation and its thickness is carefully regulated to ensure best results.

Having strong, durable and well-installed roof decking is crucial for a solid roof. That’s why roofers always check the condition of the decking during inspections and renovations and change it if necessary before updating the roof covering.

Protects against moisture 

In addition to providing stability, roof decking also helps protect the structure against moisture and the accumulation of ice and snow.

If moisture gets into the roof, it can affect its structural integrity and cause significant damage that can sometimes only be seen by thermal imaging inspection. Often, the only way to fix the damage is to replace the roof entirely, which can prove very costly. 

Install your roof decking with Les Couvreurs Duro-Toit 

Roofing requires special expertise, and installing roof decking is no exception. Since it is such a vital structural element, installing it properly is crucial for the stability and durability of the roof as a whole. 

That’s why it’s important to contact professionals like Les Couvreurs Duro-Toit, who will make every effort to install your decking flawlessly and in accordance with current regulations. 

Contact us today to benefit from our expertise for all of your roofing construction or renovation projects in Montreal and the surrounding area.

With winter just around the corner, the issue of managing snowfall and heavy snow build-up on the roofs of residential and commercial buildings is back in the spotlight.

For the safety of yourself, passers-by and your customers, roof snow guards are extremely useful during the harsh Quebec winter.

To help you get ready before the first snowflakes fall, Duro-Toit’s expert roofers explain how a roof snow guard works.

What is a roof snow guard?

When snow piles up on the roof, a snow guard provides additional layer of protection for your home. The main purpose of these snow stops, another name for snow guards, is to control massive snowfalls and prevent potential accumulations.

They can be installed after calculating your roof pitch in order to avoid any accidents. Snow guards can be installed on shingled roofs, metal roofs, corrugated iron, synthetic tiles and other coverings.

Types of snow roof guards

When choosing and installing your roofing materials, it is also important to think about winter and snowfall. Depending on the type of roof covering, you will have to calculate the snow load that the roof can support and then install the corresponding snow guard. This calculation will depend on the weather conditions and regulations of the province you reside in.

There are different types of snow guards that each manage build-up of snow differently. These snow guards can be bar-style or pad-style. Bar-style snow guards are mainly used for residential and commercial buildings. Pad-style snow stops are only used for residential applications, providing a more discrete look.

Often made of galvanized steel or wood, these types of snow and ice guards can be combined to provide additional protection to your roof. In other words, a bar-style snow guard can be combined with a pad-style snow guard for additional support and increased safety for passers-by and your own personal safety.

Why install a snow guard for metal roofs?

Like asphalt shingle roofs, corrugated metal roofs (or steel roofs, depending on regulations) require additional consideration when it comes to snow build-up.

The nature of this covering makes it easier for ice to accumulate in its corrugations and form an ice dam that can become a safety hazard.

Installing a snow guard makes it easier to remove snow and ice from a commercial roof to ensure workplace safety and from a residential roof for the safety of residents.

However, snow guards come with many different benefits, including:

– Additional protection for material goods
– Prevention of snow accumulation and ice damming on roof gutters
– Protection of adjacent roofs
– Reduced risk of accidents caused by uncontrolled snowfall
– A long life span with no need for outside intervention
– Attractive addition to the roof covering with a wide choice of colors and designs to personalize your building

Keep in mind that it is important to choose the right snow guard based on the roofing regulations in your province. This is because the amount of snow can vary depending on your geographical location. The requirements will not be the same in Quebec and Ontario, for example.

How roof snow guards work

The way snow guards work is fairly simple. When snow falls, the stops will block and hold piles of snow, as long as they are properly installed by a roofing professional.

Strategically placed around the roof, they will also distribute the weight of the snow evenly to prevent avalanches. This containment will then create a layer of snow and ice in the stops until the snow is removed.

Duro-Toit can install your roof snow guards

While the installation of snow guards is relatively simple, only experienced roofers can guarantee a safe and long-lasting installation.

As expert roofers in residential and commercial asphalt shingle roofing, Duro-Toit are also skilled in flat roof snow removal, pitched roof snow removal and commercial roof snow removal.

Located in the Montreal area, we understand the weather conditions and can advise you on the installation of your snow guards. Request a quote from the experts at Duro-Toit and count on our expertise.