Plateau Mont-Royal Roofing & Renovation Contractor
Serving Plateau Mont-Royal, Mile End, and surrounding areas. Specialists in flat roof membrane replacement on iconic Montreal triplexes, heritage brick buildings, and pre-war unit renovations.
The Montreal Triplex — A Roofing Institution
The Plateau Mont-Royal is home to some of Montreal's most iconic residential architecture — the three-storey triplex with exterior staircases, built predominantly between 1880 and 1940. These buildings define the Plateau's visual character and represent significant real estate investment as young professionals and families continue to purchase and renovate them.
Structurally, the classic Plateau triplex has a flat or very low-slope roof system — historically built-up roofing (BUR) or torch-down tar and gravel, and more recently replaced with EPDM single-ply or SBS modified bitumen membrane. These membranes have finite lifespans of 20–30 years, meaning buildings constructed or last re-roofed in the 1990s and early 2000s are now due for replacement.
SOPREMA Sopralene — The Plateau Standard
The gold standard for Plateau triplex re-roofing is the SOPREMA Sopralene Flam 180 FR — a torch-applied SBS modified bitumen cap sheet over a compatible base sheet. This 2-ply system creates a fully bonded, seamless waterproof membrane rated to -25°C cold performance, Class A fire resistance, and a 25-year service life when properly installed.
Critical to any Plateau flat roof project is proper parapet wall waterproofing — the low walls surrounding the flat roof are a primary infiltration point as original flashings deteriorate. We detail parapet transitions with proper counter-flashing, reinforcing membrane, and watertight termination bar installation to ensure the parapet-to-membrane junction is fully sealed.
Renovation in Heritage Triplex Units
The robust Plateau renovation market is driven largely by young professionals buying triplexes — occupying one unit and renovating the others. Plateau units present wonderful renovation opportunities: high ceilings, original hardwood floors, interesting architectural details, and layouts that can be opened to create bright modern living spaces.
Kitchen renovations in Plateau units typically focus on opening layouts, updating cabinetry to modern designs, replacing dated countertops with quartz or stone, and improving lighting. Bathroom renovations address aging tile, deteriorating waterproofing, and outdated fixtures. CCC handles the full scope — including any required plumbing or electrical upgrades — under one contract with full permit management through the Borough of Plateau-Mont-Royal.
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Frequently Asked Questions
What type of roofing is on Plateau Mont-Royal triplexes?
The iconic Plateau triplex typically has a flat or very low-slope built-up roof (BUR) or older EPDM membrane, replaced with modern 2-ply SBS modified bitumen elastomeric membrane systems. SOPREMA Sopralene Flam is the most commonly specified product. Correct parapet wall waterproofing and drain servicing are critical components of any Plateau flat roof project.
How much does it cost to re-roof a Plateau triplex?
Re-roofing a typical Plateau triplex with a 2-ply SOPREMA elastomeric membrane system typically costs $9,000–$18,000 depending on the roof area, number of units, existing membrane condition, and parapet wall detailing required. We provide free line-item estimates — call (514) 441-3807.
Do you handle kitchen and bathroom renovations in Plateau heritage units?
Yes. Plateau heritage units typically mean plaster walls over wood lath, original cast iron plumbing, knob-and-tube electrical wiring, and high ceilings. We work with these conditions regularly, upgrading plumbing and electrical as needed, and delivering modern kitchens and bathrooms that respect the building's heritage character.
What is SOPREMA Sopralene and why do you specify it?
SOPREMA Sopralene Flam is Quebec's most trusted SBS modified bitumen elastomeric membrane. Torch-applied using controlled heat-welding, it creates a seamless, fully bonded waterproof system. Class A fire-rated, rated to -25°C cold performance, and with a proven track record on Montreal flat roofs — it is the benchmark specification for residential flat roofing across the Plateau.
I just bought a Plateau triplex — what should I inspect first?
The roof membrane is the first priority — particularly membrane age, condition at parapet flashings and drains, and any signs of past infiltration. After the roof, brick mortar joints and parapet wall waterproofing are the next exterior concern. We offer free assessments — contact us at (514) 441-3807.