Best Roofing Contractors in Ajax, ON
3 roofing contractors found in Ajax
Bn Hardwood Flooring
Ajax, ON
Ratings aggregated by AI and may contain inaccuracies.
Ronjon Contracting Inc
Ajax, ON
Ratings aggregated by AI and may contain inaccuracies.
M. E. Patterson Builders Inc.
Ajax, ON
Ratings aggregated by AI and may contain inaccuracies.
How much does roofing cost in Ajax?
Most Canadian homeowners spend $12,000-$15,000 to replace an asphalt shingle roof on a typical detached home in 2026 - full tear-off, new shingles, underlayment, flashing and cleanup, or roughly $6-$8 per square foot. Smaller or simpler roofs start near $8,000; large or steep roofs run up to $18,000, and a premium metal or standing-seam roof reaches $25,000-$35,000. Isolated repairs are far cheaper - about $300-$400 to replace blown-off shingles and $600-$900 for a typical leak.
In Ajax, ON, typical quotes tend to track the Canadian average, so the table below shows these national figures unchanged.
What moves the price: The low end is a spot repair or a small, simple asphalt roof; the top end is a large or steep roof, with premium metal or standing-seam systems costing the most.
| Project | Typical cost in Ajax |
|---|---|
| Full asphalt shingle roof replacement - typical single-family house (tear-off + new shingles, all-in) | $12,000-$15,000 $8,000 to $18,000 per project |
| Asphalt shingle roofing, installed (all-in, by roof area) | $6-$8 $4.50 to $10 per sq ft |
| Asphalt shingle roofing, installed (priced by roofing "square" = 100 sq ft) | $600-$900 $450 to $1,100 per square (100 sq ft) |
| Flat roof replacement - EPDM rubber or TPO membrane (residential) | $8-$11 $6 to $14 per sq ft |
| Metal roof replacement - steel / standing seam (typical house) | $25,000-$35,000 $18,000 to $45,000 per project |
| Roof leak repair (locate and fix, minor water damage) | $600-$900 $400 to $1,200 per project |
| Replace missing, cracked or blown-off shingles (spot / patch repair) | $300-$400 $200 to $500 per project |
| Chimney or skylight flashing repair / replacement | $450-$700 $300 to $1,000 per project |
What changes the price of roofing in Ajax
- Tear-off and disposal - stripping and dumping old shingles (especially two or more existing layers) adds cost versus going over the old roof.
- Hidden damage found once the roof is opened - rotted plywood decking (about $75-$130 per sheet), soft spots, and worn vents or flashing add to the final number.
- Location - big-city labour demand pushes Toronto (GTA) and Vancouver quotes noticeably above small-town pricing.
- Roof size and shape - roofing is priced per 100 sq ft "square," so a bigger footprint, more corners, valleys, dormers and hips all push the total up directly.
- Shingle grade - basic 3-tab is the cheapest, architectural/laminated is the common mid-tier, and designer/luxury shingles cost the most per square.
- Roof pitch and access - steep, tall or hard-to-reach roofs need more safety setup and slower work, and labour is 50-70% of a typical roofing bill.
How roofing prices vary across Canada
Big cities cost more, and it is almost entirely a labour effect. Toronto, the GTA and Metro Vancouver roofing quotes run roughly 15-25% above the national and small-town average. Other major metros - Calgary, Edmonton, Ottawa, Montreal - sit closer to par, roughly national to 10% above. Small-town and rural pricing is at or slightly below the national midpoint.
These are typical Ajax-area price ranges based on 2026 Canadian market data, not quotes. Your actual cost depends on the size and details of your project. Post your project on Bidmii to get free quotes from the 3 roofing contractors listed in Ajax above.
Frequently Asked Questions about Roofing in Ajax
How much does roofing cost in Ajax?
The cost of roofing services in Ajax, ON varies depending on the scope of work. Post your project on Bidmii to receive free, competitive quotes from local professionals.
How do I find a licensed roofing contractor in Ajax?
Browse our directory of roofing contractors in Ajax above. Look for contractors with the Verified badge, which means their identity has been confirmed. You can also check ratings aggregated from multiple platforms.
How many roofing contractors are in Ajax?
Bidmii currently lists 3 roofing contractors in Ajax, ON. Our directory is growing — create a free listing if you're a contractor.
How much does it cost to replace an asphalt shingle roof in Canada?
Most homeowners spend $8,000 to $18,000 for a full tear-off and new shingles on a typical single-family home in 2026, usually landing around $12,000-$15,000. That works out to roughly $4.50-$10 per square foot, or about $450-$1,100 per roofing "square" (100 sq ft) installed.
What does a flat roof cost compared to shingles?
Flat roof membranes - EPDM rubber or TPO - generally run $6-$14 per square foot installed. A typical residential flat roof section lands around $4,000-$12,000 depending on size, insulation, and how many vents or drains need flashing around them.
Is it cheaper to repair my roof than replace it?
For isolated problems, yes. A handful of missing shingles runs $200-$500, a typical leak repair $400-$1,200, and flashing work $300-$1,000. But if the roof is near the end of its 15-25 year lifespan or leaking in several places, repeated repairs usually add up to more than one full replacement.