What makes flat roofs different
Flat roofs are everywhere in Montreal, especially on duplexes, triplexes and other plexes. Unlike a sloped roof, a flat roof doesn't shed water naturally by gravity: it relies on a slight slope, well-placed drains and continuous waterproofing.
When any of these fails, water ponds and eventually finds its way inside.
What is an elastomeric membrane?
An elastomeric membrane is a polymer-modified bitumen system, usually installed in two layers: a base sheet and a cap sheet protected by granules. The layers are torched or adhered to form a continuous, watertight surface.
Its flexibility lets it follow building movement and temperature swings, which makes it a common choice for flat and low-slope roofs in Quebec.
Flat roof services
- Leak repair
- Maintenance and inspection
- Membrane repair
- Complete replacement
- New membrane installation
- Drainage problem assessment
Signs of deterioration
- Persistent ponding water
- Cracks and blistering or peeling
- Damaged seams
- Leaks
- Visible ageing
- Drain and flashing problems
Elastomeric membrane or other systems?
Other systems, such as TPO or EPDM membranes, may also suit depending on the building and how the roof is used. The right choice depends on the structure, exposure and budget; we'll tell you what fits your situation.
Lifespan and maintenance
A flat roof's lifespan depends on installation quality, drainage effectiveness, sun exposure and regular inspections. Keeping drains clear and having seams and flashing checked periodically helps extend it.
Our process
Simple, clear, no surprises
01
Contact Us
Tell us about your roofing needs.
02
Assessment & Estimate
We evaluate your project and provide a clear estimate.
03
Professional Service
Our experienced team completes the work carefully and efficiently.
04
Peace of Mind
Enjoy a durable, professionally serviced roof.
Our commitment
Why Homeowners Choose Us
Licensed contractor
Régie du bâtiment du Québec
RBQ Certified
Your roofing work is carried out by qualified, experienced professionals.
Quality Workmanship
A skilled team dedicated to dependable service, attention to detail, and quality workmanship.
Durable & Reliable Solutions
Quality materials and proven techniques designed to withstand Quebec's demanding weather.
Competitive & Transparent Pricing
High-quality roofing at fair, competitive prices, with clear estimates and honest communication.
FAQ
What homeowners ask us
How much does a flat roof cost in Montreal?
Cost depends on area, the condition of the deck and insulation, the number of drains and penetrations (skylights, equipment), roof access and the system chosen. An on-site assessment gives you a precise price.
How long does an elastomeric membrane last?
A well-installed and maintained elastomeric membrane can last several decades. Drainage, exposure and installation quality strongly influence its longevity.
Can a membrane be repaired without replacing it?
Yes, when the damage is localized and the rest of the membrane is sound. If the membrane is ageing across the whole roof, replacement is usually the more durable option.
Why does water collect on my flat roof?
Most often because of a clogged drain, insufficient slope or a sagging deck. A puddle that lasts more than 48 hours after rain is worth checking.
What's the best membrane for a flat roof?
There's no single answer. Elastomeric membranes are very common in Quebec; other systems may suit some buildings better. The choice is made after an assessment.
Can a membrane be installed in winter?
Some work is possible in cold weather with special precautions, but ideal conditions are in spring, summer and fall. Urgent repairs can be handled in winter.
Free estimate
Need Roofing Services? Let's Talk.
Contact our team to discuss your project and get a free estimate.
Phone
(514) 447-9385Service area
Montreal, Laval & surrounding areas
Business hours
7 days a week, 8 a.m. to 6 p.m.