What Is the Average Cost to Replace an Asphalt Shingle Roof in Ontario in 2026?
The average cost to replace an asphalt shingle roof in Ontario in 2026 ranges from $8,000 to $20,000+, depending on the size of the roof, complexity, accessibility, materials selected, and the overall condition of the existing roofing system.
Most homeowners throughout Ontario can expect to invest between $10,000 and $16,500 for a professionally installed asphalt shingle roof replacement completed by a licensed and insured roofing contractor.
If you're researching the cost to replace roof shingles in Ontario, it is important to compare more than just the final price. Quality materials, proper ventilation, ice and water shield protection, certified installation, insurance coverage, cleanup, and warranty protection all contribute to the overall value and lifespan of your new roof.
Homeowners comparing roofing systems may also find our guide on Metal Roof Costs in Ontario helpful when evaluating long-term roofing options.
| Roof Type | Average Cost Per Sq. Ft. |
| Standard Residential Roof | $5.50 – $8.50 |
| Steep or Complex Roof | $8.50 – $12.00+ |
| Premium Roofing Systems | $10.00 – $15.00+ |
| Roof Size | Typical Price Range |
| 500 – 1,000 sq. ft. | $3,000 – $6,500 |
| 1,000 – 1,500 sq. ft. | $6,500 – $10,500 |
| 1,500 – 2,500 sq. ft. | $10,000 – $16,500 |
| 2,500 – 3,500 sq. ft. | $14,000 – $22,000 |
| 4,000+ sq. ft. | $20,000+ |
Most roof replacement projects include:
- Removal and disposal of existing shingles
- Ice and water shield installation
- Synthetic underlayment
- Starter shingles and ridge caps
- Roof ventilation upgrades
- Site cleanup and magnetic nail sweep
- Manufacturer warranties
- Workmanship warranty
What Affects the Cost of a New Roof?
Roof Size
Larger roofs require more materials, labour, disposal, and installation time. Since roofing materials are priced by the square foot, roof size remains one of the biggest factors affecting the cost to replace roof shingles in Ontario.
Roof Pitch & Complexity
Steeper roofs, multiple valleys, dormers, skylights, and chimney flashings increase labour requirements, safety considerations, and installation time.
Accessibility to the Roof
Limited access, multi-storey homes, landscaping restrictions, and difficult working conditions can increase project costs.
Roofing Materials
Architectural asphalt shingles are now the industry standard across Ontario due to their superior durability, appearance, wind resistance, and warranty coverage compared to traditional 3-tab shingles.
Ventilation & Deck Repairs
Many roof replacement projects also require ventilation upgrades or replacement of damaged roof decking. These additional repairs can impact the overall project cost but help ensure your new roofing system performs properly for decades.
Why Insurance Coverage Matters
One of the most overlooked factors when hiring a roofing contractor is insurance.
At Nailed It Roofing & Construction, we maintain $10 Million in Liability Insurance Coverage, a level of protection often required for large commercial, condominium, and institutional roofing projects.
For homeowners, this means added peace of mind knowing they are working with a professional contractor that meets higher standards for safety, accountability, and financial stability.
Many roofing companies carry significantly lower insurance limits or fail to carry adequate coverage altogether. Before hiring any roofing contractor, always ask for proof of liability insurance and WSIB coverage.
Beware of Extremely Low Roofing Quotes
The cheapest quote is rarely the best value. Unusually low pricing may indicate:
- Insufficient insurance coverage
- Unlicensed or uninsured labour
- Inferior materials
- Reduced warranty protection
- Installation shortcuts
A properly installed asphalt shingle roof should protect your home for decades. While it may be tempting to choose the lowest price, homeowners should focus on overall value, workmanship, warranty coverage, and contractor reputation when comparing roofing quotes.
Ontario Roof Replacement Cost FAQs