2026 GTA cost guide · updated for current rates
How Much Does a Roof Replacement Cost in Toronto? (2026)
Most roofers won't put a number on a page. We will. Below is a real, property-by-property breakdown of what a roof replacement costs across Toronto and the GTA in 2026 — the range, the price per square foot, and every line item that moves it.
How much does a roof replacement cost in Toronto?
For a typical detached GTA home, a full architectural-shingle roof replacement costs about $15,000 to $20,000 plus 13% HST in 2026. That price per square foot runs roughly $5.50 to $8.50 for architectural shingles, installed with tear-off, new underlayment, code-required ice-and-water, new flashing, and ventilation. Smaller roofs cost less; large, steep, or complex roofs cost more.
This is a planning range, not a quote. Your verified price is confirmed after an on-site, photo-backed assessment — see your own number below.
Cost per square foot by shingle type (GTA, installed)
Roofers price by the square— 100 square feet of roof surface. Because your roof is sloped, its surface is usually about 20–30% larger than your home's floor area. These rates are all-in: tear-off, underlayment, and basic flashing included.
| Shingle type | Installed $/sq ft | Realistic GTA lifespan | Best for |
|---|---|---|---|
| 3-tab asphalt | $3.50–$5.50 | 15–20 years | Lowest upfront cost; being phased out |
| Architectural (laminate) | $5.50–$8.50 | 25–35 years | The GTA default — most replacements |
| Designer / Class-4 impact | $9.00–$12.00 | 30–50 years | Longest life, best wind/impact resistance |
GTA labour, disposal, and access add roughly 15–25% over the rest of Ontario — provincial averages tend to understate a real Toronto quote.
Whole-job cost by house size (architectural asphalt)
Roof surface area, not floor area, drives the total. A 2,000 sq ft home typically has about 2,400–2,600 sq ft of roof once the slope is counted. Ranges below are for a standard architectural replacement, before 13% HST.
| Home size (floor) | Approx. roof surface | Planning range (before HST) |
|---|---|---|
| Bungalow / ~1,200 sq ft | ~1,500–1,700 sq ft | $9,000–$14,000 |
| Mid-size detached / ~2,000 sq ft | ~2,400–2,600 sq ft | $15,000–$20,000 |
| Large / two-storey / ~3,000 sq ft | ~3,400–3,800 sq ft | $21,000–$28,000+ |
Sample planning ranges for orientation only. Steep pitch, multiple existing layers, low-slope sections, or rotted decking move these numbers — see the factors below.
What drives the price: size, pitch, layers, and decking
Four things move a roof quote more than anything else:
- Size and complexity. More surface, more valleys, dormers, skylights, and chimneys all add cut-up labour and flashing. A simple gable roof is cheaper per square foot than a complex one of the same area.
- Pitch (slope).Steeper roofs are slower and need more staging and safety setup. Above roughly 7/12, productivity drops and the price climbs. Very low-slope sections under 3/12 can't take standard shingles at all and need a different membrane.
- Existing layers.One layer is a straightforward tear-off. Two or more layers double the tear-off labour and the disposal tonnage — and Ontario only permits one overlay without an engineer's sign-off, so a second layer usually means a full strip.
- Decking condition.Rotted plywood under the shingles is the single biggest reason a "fixed" quote balloons. It's covered up until tear-off. More on this next.
Tear-off, decking, and disposal
Tear-off — stripping the old roof to the deck — adds roughly $1 to $3 per square footin labour and disposal. A bungalow tear-off generates three to five tonnes of shingle waste, and Toronto's renovation-waste tipping fees alone can run several hundred dollars per job.
Decking replacement is the #1 concealed cost. Once the old shingles are off, any soft or rotted plywood has to be replaced — typically $3 to $6 per square foot of deckingreplaced. Because no one can see it until the roof is open, it's the line that quietly inflates a "guaranteed" price. The honest fix isn't to pretend it won't happen — it's to name a per-sheet or per-square-foot deck rate in writing before work starts, so there's no surprise either way. That's exactly what a Roof Evidence Report documents with photos.
The 2026 Ontario Building Code: what a compliant roof includes
A correctly built GTA roof isn't just shingles. A few requirements are not optional, and a suspiciously cheap bid often gets cheap by skipping them:
- Ice-and-water shield at the eaves.A self-sealing membrane is required along the eaves (and at valleys and penetrations) to stop ice-dam leaks — a real risk through GTA freeze-thaw winters. A bid that skimps on eave coverage isn't code-compliant.
- Balanced ventilation (roughly 1:300). Attic ventilation is sized to about one square foot of net free vent area per 300 square feet of attic floor, split between intake (soffit) and exhaust (ridge). Proper ventilation is what keeps shingles from cooking and the deck from sweating.
- Minimum slope and fastening.Asphalt shingles need adequate slope and correct nailing for wind uplift. Like-for-like re-roofs usually don't need a permit, but structural or sheathing work can — always confirm with your municipality.
Every Roofprint roofing system includes these as standard line items, installed to manufacturer specification — never as surprise upsells.
How much of the price is labour?
Labour is the largest controllable part of a roof quote — commonly 50–60% of the total coston a GTA re-roof. That's why two quotes for the "same" shingle can differ by thousands: the cheaper crew is usually saving on people and time, which shows up later as poor flashing, reused vents, or hand-sealing skipped in cold weather. Materials matter, but workmanship is what makes a roof last its full service life.
Repair or replace? How to decide
Replacing a whole roof to fix one leak wastes money; patching a roof at the end of its life wastes it twice. A reasonable rule of thumb:
- Lean repair when the roof is under ~15 years old, the damage is isolated (a few shingles, one valley, flashing at a chimney), and the decking is sound.
- Lean replace when the roof is near the end of its service life, you see widespread granule loss or curling, there are multiple leaks, or it already carries two shingle layers.
Not sure which one your roof needs? Start with a repair diagnosis— we'll tell you honestly, and if a repair will hold, we'll say so.
Financing and deposits
A roof is a major purchase, and many homeowners spread it out. Financing options let you pay monthly instead of all at once. Just as important is whenyou pay: many GTA roofers ask for 30–50% up front. We ask 10%, and we don't charge it until your materials are delivered to your home — the simplest protection against the deposit-and-disappear story everyone's heard.
Why a suspiciously low bid is a warning sign
If one quote comes in far below the rest, ask what's missing — because something usually is. The common corners a too-cheap GTA bid cuts:
- Synthetic underlayment quietly swapped for cheap felt.
- Too little (or no) ice-and-water shield at the eaves.
- Old flashing reused instead of replaced.
- No new ventilation, so the new shingles overheat.
- Decking replacement excluded, then added as a surprise mid-job.
- A large deposit demanded up front before any materials arrive.
A real price isn't the lowest one — it's the one that shows you every line item and its assumptions. That's the whole idea behind how we quote.
Roof replacement cost: common questions
How much does it cost to replace a roof in Toronto in 2026?
Most detached GTA homes land between $15,000 and $20,000 plus 13% HST for a full architectural-shingle replacement with tear-off, new underlayment, code-required ice-and-water, new flashing and ventilation. Smaller or simpler roofs can come in lower; large, steep, or complex roofs cost more.
What is the price per square foot for a new asphalt roof in the GTA?
Architectural (laminate) asphalt shingles installed run about $5.50 to $8.50 per square foot in the GTA, including tear-off and basic flashing. Designer or Class-4 impact shingles run higher. Note this is per square foot of roof surface, which is larger than your home’s floor area because of the slope.
Why is a roof more expensive in Toronto than the rest of Ontario?
GTA labour, disposal, parking, congestion and tight-lot access add roughly 15 to 25 percent over the rest of Ontario. Toronto is among the most expensive roofing markets in Canada, so provincial averages tend to understate a real GTA quote.
What is the most common surprise cost in a roof replacement?
Replacing rotted roof decking (the plywood under your shingles) is the number-one concealed cost. It is invisible until the old roof comes off, and runs about $3 to $6 per square foot of decking replaced. Honest quotes name a per-sheet or per-square-foot deck rate up front instead of hiding it.
Should I repair my roof or replace it?
A targeted repair makes sense when the roof is under about 15 years old, the damage is isolated, and the decking is sound. Replacement is usually the better value when the roof is near the end of its service life, has widespread granule loss or leaks, or already carries two shingle layers. We will tell you honestly which one your roof needs.
Roof replacement costs by GTA city
Pricing shifts a little from one municipality to the next. See your area:
- Roof replacement cost in Mississauga
- Roof replacement cost in Brampton
- Roof replacement cost in Vaughan
- Roof replacement cost in Markham
- Roof replacement cost in Oakville
- Roof replacement cost in Toronto
See a real number for your roof
Averages only get you so far. Enter your address for a property-specific planning range, or compare complete systems first.