Flat roof

Le Toit Plat : Un Choix Moderne et Pratique pour Votre Habitat

Flat roofs are becoming increasingly popular with modern and contemporary homeowners in Canada. If you’re interested in this type of roofing, find out more about its advantages, its structure and the different materials it’s made of, so you can make an informed decision.

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A Flat Roof… Not Quite Flat

Although its name suggests a horizontal surface, a flat roof is never perfectly flat. It has a slight slope, generally between 1% and 15%, to allow rainwater to drain off. The larger the surface, the steeper the slope to avoid water stagnation.

Why choose a dish?

Flat roofs offer many advantages that explain their growing popularity:

Suitable for modern architecture: This style fits in perfectly with contemporary homes, offering a clean, minimalist look.
Additional accessible space: A flat roof can serve as a terrace, adding additional usable surface area to your home.
Fast, economical installation: Compared with a pitched roof, a flat roof is often less expensive to install and requires fewer materials.

Vegetation options: You can turn your roof into a green space or a green roof, an excellent option for small yards.

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The structure of a flat roof

A flat roof is made up of several key components, each of which has an important role to play in ensuring its stability and performance:

La Charpente

The roof structure is the framework that supports the entire roof. It must be sturdy, especially if the roof is accessible. Wood (such as oak or chestnut) is commonly used for framing, but metal framing is becoming increasingly popular for its durability.

Le Plancher du Toit

For an accessible flat roof, concrete is preferred, while for non-accessible roofs, OSB panels or steel troughs can be used. Concrete is solid, but can be heavy and costly, while steel panels offer rapid installation but poor insulation.

Thermal insulation

Insulation is crucial to maintaining a comfortable indoor temperature. Three insulation techniques are common for flat roofs:

Warm roof: Insulation is placed above the roof structure.
Inverted roof: insulation is laid under the waterproofing membrane.
Combination roof: A hybrid method that combines the first two.

Finishing coatings

The finish is the visible layer of the roof. There are several options to choose from, depending on your needs and aesthetic preferences:

Bitumen: A common solution for its adhesion and waterproofing performance.
EPDM (rubber): Durable material with high weather resistance.
Multi-layer reinforced bitumen: Superimposition of several layers for optimum waterproofing.
PVC: Affordable solution, but less reliable and durable.
SEL (Système d’Étanchéité Liquide): Tread-resistant coating, ideal for flat roofs.
Green roofing: Adds an aesthetic and ecological dimension, while offering additional protection against the elements. However, it can be heavy and requires structural reinforcement.

Installation, Maintenance and Repair of Your Flat Roof

Installing a flat roof requires specific skills and equipment. It’s essential to call on experienced professionals to guarantee a quality installation and avoid long-term problems.

At Toitures LV, we offer you our expertise for the installation of flat roofs, whether for new construction or the renovation of your existing roof. We can also rectify the slope angle if necessary to ensure proper drainage of rainwater.

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Our Roofing Services in Laval and on the South Shore

Our team of professional roofers works on all types of buildings, whether residential, commercial, industrial or institutional. We also offer roofinspection, repair and snow removal services to ensure the longevity of your flat roof all year round.

Interested in installing a flat roof? Contact us now for a free, fast quote!