One of the most common questions we get with regards to client/customer phone calls is about Roof Replacement Cost in Ontario. Material and labour prices have risen in recent years, so it helps to understand what drives the cost. For current price ranges, see our 2026 roof replacement cost guide.
Worry not! This quick guide will discuss key factors behind Roof Replacement Cost in Ontario so you know what to look out for as you discuss pricing and scope of work with your local roofing contractor. At Ontario Tech Roofing, we want to ensure that the customer has total transparency and understanding of any work to ensure they get the job done with the right quality and budget.
Roofing Material Options & Their Impact on Cost
Asphalt Shingles
As we have seen in the Ontario region and all over Canada, Asphalt Shingles are by far the most popular and most commonly used roofing material. From top brands such as CertainTeed to GAF and more, these are the most in-demand shingles for roof replacement work in Ontario.
Due to their versatility and ability to be placed at different angles and cut into different shapes, they can be laid out and designed in many ways. Roof replacement cost here depends on the steepness and height of the shingled portion of the roof, given tighter angles and hard-to-reach locations require more manpower and time.
It would also depend on whether the plywood underneath the shingle is rotting, in which case the rotted plywood must be replaced first, then new underlayment/ice-and-water shield and shingles are installed. In general, asphalt shingles have a high satisfaction rate for roof replacements given they typically last 20–30 years when properly installed. The only downside to asphalt shingles is that they can crack over time, but even then it is minimal if the work is done properly and installed correctly the first time. Explore our residential roofing services for professional shingle installation.
Flat Roofs
Flat roofs in general involve a 2-ply or 3-ply membrane that is applied on your plywood. This can also be called a Torch-down membrane. It involves torching down material to ensure it sticks to your roof and does not leave room for any leaks to come through and cause damage or wood rot.
The base and cap are installed at the end and make it very rigid and strong against any natural elements including rain and snow. When trying to determine flat roof replacement costs, please note that these roofs are made of elastomeric membranes and can be installed even in cold weather, as long as the weather permits for torching to seal the layers.
These types of roofs need to be installed by the best quality roofing contractor. You want to make sure that contractors can showcase previous flat roof installations they have completed given the trickiness of installation—especially around vents, valleys, and skylights! At Ontario Tech Roofing, we provide expert flat roof installation and flat roof repair so you can rest assured that we will give you the best quality product and workmanship at the best price.
Key Factors That Determine Roof Replacement Cost
- Roof Size and Pitch: Material and labour costs tend to go up the larger the total roof area is.
- Application Method (Low vs. Steep Roofs): Steep roofs require additional safety equipment and specialized application processes, increasing overall labour costs.
- Roof Layers Needing Replacement: In cases where there are multiple existing layers of shingles that need to be removed, labour costs increase due to the extra time required to tear off the damaged roofing material.
- Roof Accessibility: If your roof or property area is harder to reach, companies will require specialized equipment and vehicles to perform the work properly and safely. This is why you should always hire a roofing contractor with WSIB and Liability Insurance!
Get a Free Estimate Today
Remember, roof replacement cost in Ontario is highly dependent on the type of roof, age of your structure, and ease of access. With that being said, we highly encourage you to contact Ontario Tech Roofing for a free estimate.
Even with all the modern technology using satellite/drone imaging, nothing beats an on-site professional assessment to ensure accurate pricing without surprises when the bill arrives! For more expert tips on selecting the right team, check out our guide on how to find the best Hamilton roofing contractor to make sure you get the quality service you deserve.
Get Your Free Roof Estimate
Ready to protect your home? Ontario Tech Roofing has served homeowners across the GTA since 1998. Book your free estimate or call us at 905-616-4408.