Flat roof

Installation, Renovation, and Replacement of Commercial Flat Roofs

Need a durable, high-performance flat roof in Montreal or on the South Shore? Toitures SND brings its expertise to the installation and renovation of your flat roof in Verdun, Lachine, or Longueuil.

A properly installed flat roof means true peace of mind.
Rooftop view of buildings with a row of colorful apartment blocks in the distance under a blue sky.

Why Choose a Flat Roof in Montreal?

Flat roofs are often the best solution for low-slope residential and commercial buildings—like duplexes, triplexes, multiplexes, and small commercial centres. At Toitures SND, we favour flat roofs for their durability, practicality, and compatibility with the urban landscape of Greater Montreal.

Along with their modern appearance, flat roofs offer:

Usable extra space (patio, AC units, ventilation)
Excellent energy efficiency when properly insulated
A simpler structure that’s faster and easier to maintain
Often lower costs compared to sloped roofs

Types of Flat Roofs We Offer

Choosing the right flat roofing system ensures your building’s performance and longevity, whether it’s residential, commercial, or industrial. Discover our top roofing options—selected for their effectiveness, durability, and reliability.

Flat, white roof under an overcast sky. Black vents and infrastructure with trees and industrial cranes in the background.

Elastomeric Membrane Roofing

Recognized for its long-term reliability, elastomeric membrane roofing is ideal for residential, commercial, or institutional buildings with flat roofs. This heat-sealed, two-ply membrane forms a uniform and extremely resistant barrier against water infiltration.



  • Maximum protection against the elements, including rain, snow, ice and strong winds
  • Resists UV rays, thermal shocks and premature wear
  • Minimal maintenance and long lifespan: a roof that remains efficient year after year
  • Possibility of finishing in colored granules for better aesthetics and increased fire safety

TPO Roofing (Thermoplastic Polyolefin Membrane)

TPO is a modern, single-ply membrane known for its light weight and energy efficiency. Ideal for newer commercial or residential roofs, it offers strength, flexibility, and thermal performance.



  • Reflects heat thanks to its white surface, reducing cooling costs
  • Resistant to UV rays, chemicals, mould, and punctures
  • Fast installation, compatible with various substrates (concrete, steel, wood)
  • Average lifespan of 25–30 years with minimal maintenanc
A snowy landscape with a dam and distant mountains under a bright blue sky.
Rooftop covered in small white stones with a cityscape of tall buildings in the background under a blue sky.

Built-Up Asphalt and Gravel Roofing

This traditional multi-layer system remains a trusted solution for large flat roofs. Widely used for multi-unit buildings, schools, and industrial facilities, it’s a great balance of performance and affordability.



  • Layers of asphalt-saturated felt and a top layer of gravel for full protection
  • Strong thermal insulation and weather resistance
  • Localized repairs possible without replacing the entire surface
  • Cost-effective option with up to 30 years of lifespan with proper upkeep

A High-Performance Flat Roof, Worry-Free

Our goal is simple: to provide you with a watertight, reliable, high-performance flat roof for years to come.

Contact us for a free estimate!