How much does a roof cost in Quebec and Canada?
Asphalt shingles or flat roof: a price calculated item by item, without measuring and without a visit.
Your project
Is it new construction or a renovation?
In new construction, there is nothing to remove.
The price of a roof depends first on its area and pitch, then on the material and on what has to come off before the new roof goes on. The calculator measures your roof on the aerial image from your address, then prices each item at Quebec rates.
What changes the price of a roof
- Area and pitch
- A steep roof needs more shingles (sloped surfaces are larger than the footprint), more time, and safety equipment that slows the work.
- The material
- Asphalt shingles remain the most common choice on a pitched roof. A flat roof gets an elastomeric or TPO membrane, which takes a specialized roofer to install.
- Tear-off
- Removing the old covering, hauling it to the container and repairing damaged decking makes up a good share of the price. Two layers to remove cost more than one.
- Roof details
- Chimneys, dormers, vents and valleys need flashing and time. A simple gable roof goes faster than a roof with many facets.
- Number of storeys
- A two-storey roof takes more scaffolding and handling than a bungalow.
What the estimate includes
- Shingles or membrane, underlayment, self-adhesive membrane at the eaves and in the valleys
- Flashing, vents and metal drip edges
- Tear-off of the old covering and the container
- A roofer’s labour at the CCQ rate, with payroll costs
- Mobilization, safety equipment and a contractor’s normal margin
Frequently asked questions
How much does a roof cost in Quebec and Canada?
Reroofing a 40 × 30 ft bungalow costs $11,300 to $14,500 in Quebec in 2026: architectural asphalt shingles, two slopes, medium pitch, one layer to tear off, one chimney. The price varies mostly with area, pitch and tear-off. Amount before taxes, calculated line by line by qcalculatrice.com at Quebec prices (Québec — grille 2026 v2.2), range verified on September 18, 2026. This is an estimate, not a quote: the calculator redoes it for your home.
When should a shingle roof be replaced?
In Quebec, an asphalt shingle roof usually lasts 15 to 25 years depending on shingle quality, orientation and attic ventilation. Curling shingles, granules in the gutters or leaks in the attic are the usual signs.
Do I need a permit to redo my roof?
Replacing the covering like for like rarely needs a permit, but many municipalities require one if the structure or material changes. Check with your city before the work.
Does the estimate work for a flat roof?
Yes. The calculator tells a pitched roof (shingles) from a flat roof (membrane), with the parapets, drains and flashing specific to a flat roof.
Is this a firm price?
No. It is an estimate calculated for your house, precise enough to set a budget and judge quotes. Only a roofer who has seen the roof can sign a price.