Roof Replacement Cost in Ottawa: What to Expect

What actually shapes your quote

Roof size and pitch, the material you choose, whether the old roof needs to be torn off, the number of layers, chimney and skylight flashings, ventilation upgrades, and the contractor's warranty all move the number.

In Ottawa, ice-and-water shield coverage along eaves is essentially standard given our winters — treat any quote without it as incomplete.

Example price ranges

As of early 2025, homeowners we've spoken to typically see asphalt shingle replacements in the $6,000–$14,000 range for a standard detached home, and metal roofing roughly two to three times that. These are example ranges only — always get three written quotes for your specific home.

Asphalt vs. metal, gently compared

Asphalt is affordable, familiar, and easy to repair. Expect 20–25 years of service in the Ottawa climate with quality shingles and proper ventilation.

Metal costs more up front but often lasts 40–60 years, sheds snow well, and can improve resale. It's an investment that makes the most sense if you plan to stay.

Signs your roof is asking for attention

Curling or missing shingles, granules collecting in gutters, daylight in the attic, or repeat leaks after storms are all worth a professional eye — not a panic.

Questions worth asking every contractor

Are you WSIB-covered and insured? Who owns the workmanship warranty? Will you remove the old roof entirely? What ventilation changes are you recommending, and why?