Roof Replacement Costs in Canada

What you are actually paying for

Shingles are a minority of the bill. The larger costs are labour, tear-off and disposal, and the layers underneath that nobody sees once the job is done. Ice and water shield along eaves and valleys is required by the National Building Code in Canadian climates, and it is one of the first things a lowball quote quietly leaves out.

Deck condition is the wildcard. Nobody knows what the plywood underneath looks like until the old roof comes off. A good quote states a per-sheet price for deck replacement up front, so the number is agreed before anyone is standing on your roof holding a rotten sheet.

Complexity does the rest. Steep pitch means harness work and slower progress. Multiple valleys, dormers, skylights and chimney flashings all add detail work, and detail work is where roofs leak, so it is not a place to accept the cheapest approach.

• Roof area in squares, not house square footage
• Number of existing layers to tear off
• Pitch and how much of the roof is walkable
• Valleys, dormers, skylights, chimneys and vent penetrations
• Deck repair, priced per sheet
• Ice and water shield, underlayment, drip edge, starter and ridge cap
• Disposal, permit where required, and site protection

Material choices and what they change

Architectural laminate asphalt is the default across most of Canada because the price to lifespan ratio is hard to beat. Three-tab is cheaper up front and does not last as long, which is why it is increasingly rare on replacements. Designer and impact-rated shingles cost more and make sense in hail-prone areas.

Metal is a different budget entirely. Published figures put standing-seam steel at roughly two to two and a half times an asphalt roof on the same house. The case for it is lifespan and snow shedding, not first cost.

Whatever the material, ventilation deserves attention during the quote. Under-ventilated attics cook shingles from underneath and shorten the life of an expensive roof. If no contractor mentions intake and exhaust venting, ask.

Winter work and seasonal pricing

Roofing in Canadian winter is possible but harder. Shingles need warmth to seal properly, crews work slower in cold, and snow removal adds time. Published guidance notes a winter premium on cold-weather installs, and some manufacturers have specific hand-sealing requirements below certain temperatures.

Emergency work in winter is a different question from a planned replacement. If a storm has opened the roof, a temporary repair now and a full replacement in spring is often both cheaper and better work than a rushed winter install.

Late spring and early fall are the sweet spot. Crews are available, temperatures are right for sealing, and you are not making the decision with a tarp on the roof.

Repair or replace

One or two lifted shingles after a windstorm is a repair. Widespread granule loss, curling across whole slopes, or a roof past twenty years with multiple leaks is a replacement, and patching it repeatedly costs more over five years than replacing it once.

Age matters when insurance is involved too. Many insurers reduce coverage or refuse claims on roofs past a certain age, so if yours is approaching twenty years it is worth reading your policy before deciding to squeeze another season out of it.

What a real roofing quote includes

Roofing has more room for quiet omissions than most trades because so much of the work is hidden by the time you see it. A quote that answers all of the following can be compared fairly against another one.

• Roof area in squares and the number of layers to remove
• Shingle brand, line and colour
• Underlayment type and where ice and water shield will run
• Per-sheet price for deck replacement, agreed in advance
• Flashing plan for chimneys, walls, valleys and skylights
• Ventilation being installed or kept
• Workmanship warranty length, separate from the shingle warranty
• Cleanup, magnetic nail sweep and disposal