Flat Roofs in Montreal and the Surrounding Areas
What Is a Flat Roof?
A flat roof is a roofing system with a low slope, generally inclined between 1 and 5 degrees to allow water to drain. Unlike sloped roofs, a flat roof relies on a system of membranes and layered components to ensure the building's waterproofing. ML Pro Toitures installs, maintains, and repairs all types of flat roofing in Montreal and on the South Shore.
A properly installed flat roof means decades of peace of mind.
Why Is It Important to Properly Install and Maintain Your Flat Roof?
Quebec's climate is particularly demanding on flat roofs. Freeze-thaw cycles weaken membranes, create microcracks, and accelerate the deterioration of seams and flashings. Every project at ML Pro Toitures is completed according to manufacturer standards, using certified products and backed by a 10-year warranty on the work.
Rigorous installation and regular maintenance help prevent:
Mould and indoor air quality problems
Insulation damage and loss of energy efficiency
Deterioration of ceilings, walls, and floors
Types of Buildings We Work On
Multi-unit residential buildings (duplexes, triplexes, condos)
Residential garages and home extensions
Retail stores and commercial spaces
Industrial buildings and warehouses
Institutional buildings
The Main Flat Roofing Systems
Elastomeric Membrane — The Most Popular System in Quebec
Two distinct layers are applied and then torch-fused to form a continuous, watertight membrane.
Highly resistant to moisture, harsh weather, and temperature fluctuations, the elastomeric membrane is ML Pro Toitures' specialty.
Asphalt and Gravel — The Traditional System
Multiple layers of bituminous felt are stacked and covered with gravel.
A proven option that protects the membrane against UV rays and debris, it is particularly common on commercial and multi-unit residential buildings.
TPO — Thermoplastic Polyolefin
A single-ply vinyl-based membrane with heat-welded seams.
Lightweight and high-performing, TPO membrane is available in light colours to reduce urban heat islands and can be installed over an existing roof.
EPDM — Synthetic Rubber
A single-ply synthetic rubber membrane adhered in place rather than torch-fused.
Highly resistant to harsh weather and well-suited to Quebec's climate, EPDM membrane is also lightweight and can be installed over an existing roof.
Not sure which system to choose?
We can guide you.
