Roof Replacement Cost in Ontario (2026 Price Guide)
Your roof is showing its age and you want a real number before you call anyone. Fair enough. A new roof is one of the bigger investments you make in your home, so the price matters.
Most roof replacements in Ontario run between 8,000 and 20,000 dollars. The spread is wide because the price depends on your roof size, the material, the pitch, and what the crew finds once the old roof comes off. Here is the full breakdown so you can budget with confidence.
Roof Replacement Cost in Ontario
For a standard home of 1,500 to 2,000 square feet with asphalt shingles, most homeowners pay between 8,000 and 15,000 dollars. Larger, steeper, or more complex roofs, or premium materials, push toward 20,000 dollars and beyond.
| Material | Installed cost per square foot |
|---|---|
| Asphalt shingles | 4.50 to 7 dollars |
| Premium or architectural shingles | 6 to 11 dollars |
| Metal roofing | 9 to 16 dollars |
| Cedar, slate, or synthetic | 15 dollars and up |
Asphalt is the most common choice in Ontario because it balances cost and durability. Metal costs more upfront but lasts far longer, which we cover in our guide on metal vs asphalt roofing.
What Drives the Price
- Roof size. More area means more material and labour.
- Material grade. Premium shingles and metal cost more.
- Pitch and complexity. Steep or cut up roofs take longer and need more safety setup.
- Tear off and disposal. Removing the old roof adds cost but protects the new one.
- Hidden damage. Rotted decking, fascia, or soffit found during tear off adds repair cost.
Why Labour Is a Big Part of the Cost
Labour usually makes up 40 to 60 percent of a roof replacement. That is not a markup to avoid. Proper installation, ventilation, and waterproofing are what make the roof last its full lifespan. A cheap install that skips steps costs you more when it fails early. Our Oakville roofing crews handle the full system, not just the shingles.
Repair or Replace?
Not every roof needs a full replacement. A localized leak or a few missing shingles may only need a repair. But if your roof is near the end of its life, repairs become a losing game. Learn how long yours should last in our guide on roof lifespan in Ontario, and watch for the warning signs in our guide on the signs you need a new roof.
How to Get an Accurate Quote
The only way to get a real number is a roof inspection. A contractor measures the roof, checks the pitch, and looks for hidden damage before quoting. Always get a detailed written quote that lists tear off, materials, ventilation, and any repairs, so there are no surprises mid job. Compare at least two quotes, and weigh the warranty, not just the price.
Roof Replacement Cost FAQ
How much does it cost to replace a roof in Ontario?
Most replacements run 8,000 to 20,000 dollars. A standard asphalt roof on a 1,500 to 2,000 square foot home usually falls between 8,000 and 15,000 dollars.
What is the cost per square foot for a new roof?
Asphalt shingles run about 4.50 to 7 dollars per square foot installed. Metal runs 9 to 16 dollars, and premium materials go higher.
Does a new roof add value to my home?
Yes. A new roof improves curb appeal, reassures buyers, and recovers a strong share of its cost at resale. It also helps avoid surprises during a home inspection.
Should I replace my roof or just repair it?
Repair makes sense for isolated damage on a roof with years of life left. Replace when the roof is near the end of its lifespan or has widespread damage.
How long does a roof replacement take?
Most homes are done in one to three days, depending on size, pitch, weather, and any repairs needed to the decking or trim.
The Bottom Line
Budget 8,000 to 20,000 dollars for a roof replacement in Ontario, with most asphalt jobs in the 8,000 to 15,000 range. Size, material, pitch, and hidden damage move the number. Get a written quote after a real inspection, and weigh the warranty alongside the price.
Want a real number for your roof?
Peace of Mind Exteriors gives Oakville and Golden Horseshoe homeowners a detailed written quote after a free inspection. Financing available. Call (905) 484-7785 or request a free quote.