Overview
- A full asphalt shingle roof replacement on a typical Ottawa home usually runs between $6,500 and $12,000, with tear-off, disposal and ice and water protection included.
- Metal roofs cost two to three times more up front, commonly $15,000 to $30,000, but they last far longer.
- Installed prices generally fall between $4.00 and $6.50 per square foot for asphalt shingles and $10.00 to $20.00 for metal.
- Roof size, pitch, the number of valleys and dormers, and hidden deck damage move the price more than anything else.
- Ottawa’s freeze-thaw winters shape what a code-compliant roof includes, and those extras are part of a fair quote.
- Federal Greener Homes funding no longer applies to new roofs, so plan on paying for the work yourself.
Nobody plans for a new roof. It tends to show up on the to-do list after a stain appears on the ceiling or a few shingles land in the yard, and the first question is always the same: how much is this going to cost?
It is a fair question, and the honest answer is that it depends. A bungalow in Barrhaven with a simple gable roof is a very different job from a two-storey home in Manotick with three dormers and a steep pitch. Add an Ottawa winter to the mix, with its heavy snow, ice dams and constant freeze-thaw swings, and the price is shaped by more than square footage.
This guide gives you realistic 2026 price ranges for roof replacement in Ottawa, explains what moves the number up or down, and shows what a good quote should include so you can compare estimates with confidence.
What a New Roof Costs in Ottawa in 2026
For most single-family homes, a full roof replacement in Ottawa with architectural asphalt shingles runs between $6,500 and $12,000. Homes with complex rooflines, steep pitches or tricky access will sit toward the top of that range, and premium materials move the number well beyond it.
|
Roof type |
Installed cost per sq. ft. | Typical total for an average home | Typical lifespan |
| Architectural asphalt shingles | $4.00 to $6.50 | $6,500 to $12,000 | 20 to 25 years |
| Metal (exposed fastener to standing seam) | $10.00 to $20.00 | $15,000 to $30,000 | 40 to 70 years |
These figures are a guide, not a quote. Your final price depends on your roof’s size, shape and condition, and the only way to get a firm number is to have the roof measured and inspected.
Asphalt shingle roofing in Ottawa is still the most common choice because it balances cost, appearance and performance. Metal costs more at the start, but it can outlast a shingle roof two or three times over. Our metal vs asphalt comparison walks through that trade-off in detail.
What Is Included in the Price
A proper quote covers more than shingles. When you compare estimates, look for each of these:
- Tear-off and disposal: removing the old roofing down to the wood deck and hauling it away.
- Deck repairs: replacing any soft, damaged or delaminated sheathing so the new roof has a solid base.
- Drip edge: metal edging along the eaves and rakes that guides water into the eavestroughs.
- Ice and water shield: a self-sealing membrane along the eaves and in valleys, which matters a great deal in Ottawa.
- Underlayment: a synthetic layer over the deck that acts as a second moisture barrier.
- Flashing: metal and rubber seals around chimneys, vents, skylights and wall joints, where most leaks start.
- Ridge cap and ventilation: the finishing pieces at the peak, often paired with a ridge vent.
- Cleanup: magnetic sweeping of the lawn and driveway to pick up stray nails.
What Pushes the Price Up or Down
Two houses on the same street can get very different numbers. These are the factors that matter most:
- Roof size and shape. More surface area means more material and labour. Every valley, dormer, chimney and skylight adds cutting, flashing and time.
- Pitch and access. Steep roofs need extra safety rigging and slow the crew down. Tight lots or limited driveway space for bins and materials also add cost.
- Material choice. Moving from standard architectural shingles to premium shingles, rubber roofing or metal changes the price tag quickly.
- Condition of the deck. Hidden rot or water damage only shows once the old roof is off. Ask how deck repairs are priced before you sign, so a surprise does not turn into a dispute.
- Ventilation and insulation. Upgrading attic airflow during a roof replacement costs a little more now and saves you from problems later.
- Timing. Peak season brings full schedules, while weather delays can stretch a job. Our post on how weather affects roof replacement cost in Ottawa covers this in more depth.
Metal and Flat Roofs Are Priced Differently
If you are considering standing seam metal roofing in Ottawa, expect a higher starting price than shingles in exchange for decades of service and excellent snow shedding. We explain why in our guide to the benefits of standing seam metal roofs.
Flat and low-slope roofs follow a different pricing logic altogether. Flat roof replacement in Ottawa depends on the membrane system, the insulation underneath and how many layers need to come off. If that is the kind of roof you have, our flat roof replacement guide is the better starting point.
Why Ottawa Roofs Have Their Own Price Tag
Ottawa roofs live a hard life. Winter nights drop well below freezing, July afternoons bake dark shingles, and the freeze-thaw cycle in between stresses every seal, fastener and flashing on the roof.
The biggest culprit is the ice dam. Heavy snow acts like a blanket on your roof. If warm air leaks from the house into the attic, it melts the snow from underneath, the meltwater runs down to the cold overhang and refreezes, and the water that follows backs up under the shingles. Natural Resources Canada explains the building science in its guide to roofs and attics.
That is why a proper Ottawa roof includes a few things you might not see on a quote from somewhere milder:
- Eave protection. The Ontario Building Code (Section 9.26) calls for a waterproof membrane that runs from the edge of the roof at least 900 mm (36 inches) up the slope and reaches at least 300 mm (12 inches) inside the exterior wall line. A quote that leaves this out is not a bargain.
- Full underlayment. The code sets a minimum, but many shingle manufacturers expect underlayment across the whole deck to keep the warranty valid, and the Insurance Bureau of Canada also recommends it for wind resistance.
- Attic ventilation. Airflow keeps the roof deck cold in winter so snow does not melt, and it lets summer heat escape so shingles do not bake from underneath. See how a ridge vent extends roof life, and why attic insulation and air sealing belong in the same conversation.
- Better valley and edge details. Newer homes in Kanata, Stittsville and Barrhaven often have many valleys, which collect a lot of water and snowmelt. Older rural homes around Kemptville and Winchester sometimes need ventilation brought up to current standards during the job.
None of these are optional extras. They are the difference between a roof that lasts and one that leaks in its third winter.
Permits, Rebates and Hidden Costs
The City of Ottawa does not require a building permit for installing asphalt shingles on a roof as long as there are no structural changes. If the tear-off reveals rotten trusses or large areas of sheathing that need replacing, or if you are adding a skylight or dormer, a permit may be required. Homes in a designated Heritage Conservation District can also need a heritage permit before you change roofing materials. The City’s page on building permit projects lists the current rules, and a good contractor will confirm them for your address.
On funding, be careful with anyone who promises that a government grant will pay for a new roof. The federal Canada Greener Homes Loan and its companion grant are closed to new applicants. Provincial rebates, where available, have targeted attic insulation rather than roofing materials, so check what applies before you count on any savings.
How to Budget and Compare Quotes
Get at least two or three written quotes from roof replacement contractors in Ottawa, and make sure each one covers the same job. A low number often just means a shorter list of inclusions.
- Ask for a price broken down by material, labour, disposal and deck repairs.
- Confirm the type of underlayment, eave protection and ventilation in writing.
- Ask how the contractor prices extra decking if hidden damage turns up.
- Check what warranty applies to the materials and to the workmanship.
- Book a roof inspection in Ottawa first if you are unsure whether you need a full replacement or a repair. Our guide to the signs you need a new roof is a helpful starting point.
If you can, plan ahead. Booking outside the busiest weeks gives you more choice of dates and more time to compare options without pressure.
Frequently Asked Questions
Can I save money by roofing over my existing shingles?
It may look cheaper on paper, but it rarely works out that way. A second layer hides rot underneath, adds weight to the roof framing and stops the new shingles from lying flat, which weakens their wind seal. Most reputable roofers and shingle manufacturers advise a full tear-off.
Does home insurance pay for a new roof?
Usually not when the roof simply wears out with age. Insurance generally responds to sudden damage, such as a windstorm or a fallen tree, less your deductible, and the payout may be adjusted for the age of the roof. Our guide to roof damage from trees covers how to document damage and start a claim.
Do I need a new drip edge with a new roof?
Yes. Tearing off the old roof bends the thin metal, and the ice and water shield is applied over the drip edge to form a continuous barrier. Fresh drip edge keeps that seal tight and directs water properly into the eavestroughs.
Is a metal roof worth the higher price in Ottawa?
For many homeowners who plan to stay put, yes. Metal sheds snow well, handles freeze-thaw cycles and can last several times longer than asphalt shingles. If you may sell within a few years, shingles are often the more practical choice.
Summary
A new roof in Ottawa is a major investment, but the numbers become much easier to read once you know what goes into them. Expect roughly $6,500 to $12,000 for an architectural asphalt shingle roof on a typical home and $15,000 to $30,000 for metal, with size, pitch, roof complexity and deck condition deciding where you land in that range.
Ottawa’s freeze-thaw winters mean a fair quote includes proper eave protection, full underlayment and good attic ventilation. Compare written quotes line by line, ask how hidden repairs are handled, and plan on funding the work yourself, since federal Greener Homes support no longer applies to roofs.
If you would like a clear, itemized price for your own home, request a free quote or call Taylor Roofing at 613-416-6215. We will measure the roof, check the deck and ventilation, and walk you through the options with no pressure.