Flat Roof Houses: a Sustainable Solution

Flat-roof homes are becoming increasingly popular among Quebec homeowners. Their contemporary look, energy efficiency, and design potential make them a top choice, especially for new constructions and renovation projects. At Les Couvreurs Duro-Toit, we put our expertise at the service of your home, guiding you through the design, installation, inspection, and maintenance of this type of roofing.

Below, discover the benefits of a flat roof, the different materials available, common mistakes to avoid, and the services we offer to ensure the durability and performance of your roof.

Why choose a flat-roof home?

A clean and contemporary design

The flat roof gives your home a modern architectural style. It fits perfectly with minimalist projects or cubic-style houses. In addition to offering a sleek appearance, it blends better into dense urban environments where every square foot matters.

Additional usable space

Unlike sloped roofs, a flat roof can be used as a terrace, garden, or even a green roof. It’s an ideal solution to maximize space, especially in urban areas where land is limited.

Popular uses include:

• Rooftop terrace with outdoor furniture
• Elevated vegetable garden
• Solar panel installation
• Relaxation area with a spa

Better management of technical equipment

Ventilation systems, air conditioners, and solar panels can be discreetly installed on the flat roof without affecting the facade’s aesthetic appeal.

Benefits of a flat roof for your house

Lower construction cost

Flat roofs typically require fewer materials than sloped ones. Their simpler structure reduces labor costs, resulting in significant savings on your overall construction or renovation project.

Ease of maintenance

Thanks to its accessible surface, maintaining a flat roof is safer and easier. Regular inspections can be performed to detect cracks, water infiltration, or pooling.

Energy performance

A well-designed and properly insulated flat roof offers excellent airtightness and thermal retention. It helps reduce heat loss in winter and overheating in summer, enhancing comfort and lowering energy bills.

Drawbacks and precautions to consider

Rainwater management

Flat roofs don’t allow for natural water runoff like sloped roofs. Therefore, an efficient drainage system (scuppers, roof drains, minimal slopes) is essential to prevent water buildup and infiltration.

Insulation and waterproofing

Flat-roof homes require high-quality waterproof membranes. Without them, water can seep in and damage the structure. Our flat-roof roofers work exclusively with materials known for their durability and performance.

Regular maintenance is essential

An annual inspection ensures your roof covering remains in good condition. Seams, membranes, and drainage systems must be checked and maintained to avoid costly issues over time.

What materials should be used for a flat roof?

Elastomeric membrane

Elastomeric membrane is known for its exceptional durability, lasting up to 30 years. Its hot-welded installation makes it perfectly suited to Quebec’s harsh climate, offering great resistance to weather and UV rays.

TPO membrane (thermoplastic)

An eco-friendly and reflective option, this type of roofing helps reduce urban heat islands while allowing for flexible installation—either cold-applied or hot-air welded.

EPDM membrane (synthetic rubber)

EPDM stands out for its good resistance to temperature variations, ease of installation, and suitability for flat roofs with few obstacles.

Flat-roof houses: construction, inspection, and repair

Construction and re-roofing

At Les Couvreurs Duro-Toit, we build flat roofs for new homes or complete renovations. We ensure every project complies with current building standards, particularly regarding insulation, slope, and waterproofing.

Our services include:

• Load-bearing structure analysis
• Selection of the best roofing material
• Professional installation using the safest techniques
• Warranty on materials and labor

Drone roof inspection

With our drone roof inspection service, we can quickly detect weaknesses or damage, even in hard-to-reach areas. This accurate diagnosis allows for fast and targeted intervention, minimizing repair costs.

Repair and maintenance

Whether it’s sealing a leak, repairing a damaged membrane, or unclogging a drain, our team responds quickly throughout Greater Montreal.

Request a free quote for your flat-roof home

Planning to build or renovate a flat roof for your home? Need to inspect or repair an existing one? Contact us today to benefit from the expertise of Les Couvreurs Duro-Toit.

Fast service in Montreal, Laval, Longueuil, and throughout the North and South Shores.