How much does a roof repair cost in Thunder Bay, ON?

A roof repair costs about CA$560 to CA$2,770, typical CA$1,650, using the US national range converted to Canadian dollars. That is HomeAdvisor's US figure ($395 to $1,968) at 1.4054 CAD per USD (Bank of Canada, October 20, 2026), not a survey of Thunder Bay prices.

Yes, converted. We have no Canadian price survey for this job, so we show the US national range converted at 1.4054 CAD per USD (Bank of Canada daily rate for October 20, 2026). Local labour, material and tax differences are not reflected.

Small repairs often need no permit, but rules vary. Check with your local building department before work starts. Rules are set locally, so confirm with Thunder Bay’s building department.

Roofing material: slate and metal need specialized labor; average repairs run from about $400 (flat, foam or single-ply) to $1,800 (slate). Roof size: larger roofs mean more material and time for the same kind of repair. Size of the damaged area: a few missing shingles cost far less than a section of decking. Severity of the damage: leaks that have reached decking or framing need more than surface work. Dollar figures here are US figures in US dollars.

We rank 13 roofers for Thunder Bay, ON by CR Score. Get at least three written quotes for the same scope.

Inspection of the damaged area; Materials to match the existing roof where available; Labor to repair or replace the damaged section. Always get the scope in writing on the quote.