Best Roofing Contractors in Ottawa, ON
24 companies listed · all 24 in Ottawa · 5 open 24/7 · 14 open weekends · 20 rated 4.5+
Data verified October 18, 2026
David Tulloch Roofing
Sky High Roofing & Siding
Rainbow Roofing & Renovations
ACR Roofing Ottawa
Provost & Son's Roofing
Listed for homeowners in and around Ottawa, ON, these 24 companies take roofing work. What each one claims about tear-offs, membranes and workmanship cover is taken from its own website; ratings and quoted lines come from public reviews.

Area overview: Ottawa, ON
All 24 companies we list here are in Ottawa itself. We have 46 companies in Ottawa on file; this page shows the highest-rated 24. The companies on this page are rated from 4.0 to 5.0 across 1,985 reviews; 13 have 50 or more reviews and 20 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (92%), quality (83%) and responsiveness (79%). The topics that come up most in reviews of the companies on this page are "estimates", "price" and "communication". 5 are open around the clock; 14 are open on Saturdays and 12 on Sundays. The services the companies on this page list most often on their websites are residential roofing (5), soffit & fascia (4), roofing (3), commercial roofing (2) and eavestroughing (2). 5 show a licence on their websites. 10 have ten or more years of experience, the longest 26 years. 6 offer emergency call-outs; 5 offer financing or payment plans; 16 give free estimates; 5 are family- or locally-owned and 1 lists coupons or special offers. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do roofers listed for Ottawa quote at no charge?
Free estimates are stated by 16 of the 24 companies on this page. A free visit is normal in this trade, though it doubles as a sales call. Ask for photos of the roof and the attic, written findings, and a price that separates the tear-off from anything found under it.