Roof size (square footage)
The single biggest factor. More roof area means more materials and labour. Roofing is measured in “squares,” with each square covering 100 square feet.
Honest roofing guide · Ottawa region
What Does a New Roof Cost in Ottawa?
There is no single price for a roof because no two roofs are the same — and anyone quoting a firm number before seeing your roof is guessing. The honest answer comes down to a handful of specific factors, which this guide walks through.
Every Rob's Quality Roofing replacement is quoted after a free, on-site estimate by the owner, so the number you get is real, not a range you'll have to second-guess.
The factors behind your quote
What drives the cost of your roof
Roof complexity
Valleys, dormers, multiple slopes, skylights and chimneys all add detail work and time. Total roof area and complexity together drive the cost.
Tear-off and deck condition
We remove the old shingles and inspect the deck. If rot or damaged plywood is found underneath, replacing it adds to the job — but skipping that step is never safe. We do not shingle over old shingles.
Materials chosen
The shingle line and colour, underlayment, and ventilation products all shape the quote. Rob works with Owens Corning Duration shingles and Maximum roof vents as standard.
Ventilation
Proper ventilation is calculated from your roof's square footage. Most roofs use Maximum roof vents; ridge venting is used for cathedral ceilings framed for it. Getting this right protects the roof long-term.
Access
How reachable the roof is for the crew, equipment, and disposal affects the work involved. Access is factored into the quote up front, not added later.
A useful answer, not a guess
Why we don't publish a price
Publishing a range would either make it so wide that it is useless or specific enough to mislead you. The fair thing is to look at your actual roof first.
This is a trust point, not a dodge. The free estimate exists precisely so you receive an accurate, itemized number instead of a guess: no pressure, no salesman, and a recommendation for essential work only.
Clear from the start
What you get with a Rob's Quality Roofing quote
- A free, on-site roof replacement estimate by the owner
- A clear, itemized quote
- Product and colour options explained
- Honest advice recommending essential work only
- Financing options if you'd like to spread the cost
Common questions
Roof cost questions, answered honestly
How much does a new roof cost in Ottawa?
There is no single accurate price without seeing the roof. Size, complexity, tear-off, deck condition, materials, ventilation and access all affect the quote. Rob provides a free, on-site roof replacement estimate so you receive an exact, itemized number for your home.
Why doesn't Rob's Quality Roofing publish a price range?
A broad range would not help you plan, while a narrow range could mislead you before the roof is inspected. Looking at the actual roof first is the fair way to prepare an accurate quote.
Is the roof replacement estimate free?
Yes. Rob visits the property and provides a free, on-site roof replacement estimate with a clear, itemized quote and no sales pressure.
Get the number for your roof
Start with an exact, owner-prepared quote.
Rob will see the roof in person, explain what it needs, and give you a clear roof replacement estimate.