Roofing
A Roof That Keeps Everything Below It Dry.
Home Renovation Contractors repairs and replaces roofs across Greater Montreal, Laval, Longueuil and the North and South Shores.
Many Montreal plexes have flat roofs with multi-layer or membrane systems, while houses in the suburbs usually have sloped asphalt-shingle roofs. Each needs different materials, details and maintenance.
Roofing is regulated construction work in Quebec. For reference, the 2026 CCQ residential wage for a journeyman roofer is $47.85/h before employer charges, overhead and profit.
Permit rules for roofing vary by borough, and many Montreal boroughs require reflective (light-coloured) or green coverings on flat roofs. Heritage sectors have stricter rules. Related: attic insulation and water damage repair.
When it is time
Signs Your Roof Needs Attention.
Roof problems show up inside before you see them from the ground.
Water stains on ceilings
A leak, often at flashing or seams.
Blistering or ponding
Flat roof membranes at the end of their life.
Curling or missing shingles
Shingles that no longer protect the deck.
Ice dams in winter
Heat loss and poor attic ventilation.
Granules in gutters
Worn asphalt shingles.
Age
Roofs near the end of their expected life.
What we do
Roofing Services.
Inspection, repair and replacement for flat and sloped roofs.
Flat roofs
Repair and replacement of flat roof systems on plexes and commercial buildings, with proper drains and slopes.
✓ No more ponding water.
Sloped roofs
Asphalt shingle replacement with underlayment, flashing and ventilation done right.
✓ A roof that sheds water and snow.
Leak repairs
Leaks traced to the source: flashing, seams, chimneys, skylights and vents.
✓ Fixed where it starts.
Roof types
Flat vs Sloped Roofs.
Montreal homes use both, often on the same street.
| Roof | Common on | Watch for |
|---|---|---|
| Flat membrane roof | Plexes, commercial buildings | Ponding water, blisters, drains |
| Asphalt shingles | Houses and cottages | Curling, missing shingles, granule loss |
| Metal roofing | Houses, cottages | Higher cost, very long life |
| Green or reflective roof | Flat roofs in many boroughs | Local requirements |
Ask your borough which roof coverings are required for flat roofs.
Step by step
How a Roofing Project Unfolds.
Most roofing is done from spring to fall in dry weather.
Inspection
Roof, flashing, ventilation and attic checked.
Written scope
Repair or replacement options and materials listed.
Protection
Grounds, gutters and access protected.
Tear-off
Old roofing removed; deck inspected and repaired.
New roof
Underlayment, membrane or shingles and flashing installed.
Ventilation and cleanup
Vents installed; nails and debris removed.
Final check
Roof reviewed and photos provided.
Before you compare quotes
What Drives the Cost of a Roof.
Roofing is priced by area, type and condition of the deck.
Roof area and slope
Steep roofs need more safety equipment.
Roof type
Flat membranes, shingles and metal differ in cost.
Tear-off layers
Removing several old layers adds labour.
Deck repairs
Rotted sheathing replaced before the new roof.
Flashing and details
Chimneys, skylights and parapets.
Access
Tight lots and tall plexes need lifts or scaffolding.
How do I know if my roof needs replacing?
Frequent leaks, blistering or ponding on flat roofs, curling or missing shingles and granules in gutters are common signs. An inspection confirms it.
Do I need a permit to redo my roof in Montreal?
Rules vary by borough and roof type; heritage sectors are stricter. Many boroughs also require reflective or green coverings on flat roofs.
Can a leak be repaired without replacing the roof?
Often yes. Most leaks come from flashing, seams or penetrations that can be repaired.
When is the best time to replace a roof?
Spring to fall in dry weather. Emergency repairs can be done year-round.
What causes ice dams?
Heat escaping into the attic melts snow that refreezes at the eaves. Air sealing, insulation and ventilation help prevent them.
Who does the roofing work?
Licensed roofing trades under our RBQ licence.
Get started
Planning Roof Work?
Tell us the type of roof, what you are seeing and the age of the roof if you know it. We will come back with clear options.
- Flat or sloped roof
- Photos of leaks or damage
- Approximate age of the roof
Serving all seven areas of Greater Montreal · all renovation services · renovation FAQ
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Replies with clarifying questions — not a robocall.