Ontario Roofing Costs — 2026 Overview

Roof repair pricing in Ontario is driven by material cost (asphalt, metal, cedar, flat membrane), roof pitch, access difficulty, and the scope of damage. Labour rates in the GTA run $60–$100/hour for skilled roofers. Most small repairs are quoted as flat jobs; larger scopes are quoted per square (100 sq ft). (Serving Markham, Ontario.)

Roof Repair Cost Table — Ontario 2026

A building permit is NOT required for like-for-like shingle replacement in Ontario under the Ontario Building Code. However, if you're changing roof structure, adding a skylight, or converting from flat to sloped (or vice versa), a permit is required. Always check with your local municipality before structural work. (Serving Markham, Ontario.)

Common Ontario Roof Problems

A building permit is NOT required for like-for-like shingle replacement in Ontario under the Ontario Building Code. However, if you're changing roof structure, adding a skylight, or converting from flat to sloped (or vice versa), a permit is required. Always check with your local municipality before structural work. (Serving Markham, Ontario.)

Permits for Roofing in Ontario

A building permit is NOT required for like-for-like shingle replacement in Ontario under the Ontario Building Code. However, if you're changing roof structure, adding a skylight, or converting from flat to sloped (or vice versa), a permit is required. Always check with your local municipality before structural work. (Serving Markham, Ontario.)

When to Repair vs. Replace

If your asphalt shingle roof is under 15 years old and damage is isolated (under 25% of the surface), repair makes sense. If the roof is 20+ years old, granules are washing into gutters, or you have widespread cracking, replacement is more economical than repeated repairs. A reputable roofer will give you an honest assessment — get three quotes. (Serving Markham, Ontario.)

Roof Repair Cost Ontario 2026 | Pro Tasker | Markham

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