Best Roofing Contractors in Markham, ON
23 companies listed · all 23 in Markham · 5 open 24/7 · 22 open weekends · 18 rated 4.5+
Data verified October 21, 2026
Bros. Roofing
Edmunds Home Improvements
Ck Roofing Solutions
3S Roofing Ltd.
Top Art Roofing Ltd
Listed for homeowners in and around Markham, ON, these 23 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: Markham, ON
All 23 companies we list here are in Markham itself. We have 34 companies in Markham on file; this page shows the highest-rated 23. The companies on this page are rated from 4.0 to 5.0 across 1,023 reviews; 6 have 50 or more reviews and 18 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (90%), quality (86%) and responsiveness (77%). The topics that come up most in reviews of the companies on this page are "price", "efficient" and "estimates". 5 are open around the clock; 22 are open on Saturdays and 19 on Sundays. The services the companies on this page list most often on their websites are roof inspections (2), roof repairs (2) and roof replacement (2). 5 show a licence on their websites. 5 have ten or more years of experience, the longest 19 years. 5 offer emergency call-outs; 1 offers financing or payment plans; 18 give free estimates and 3 are family- or locally-owned. We have a website on file for 21 of the companies on this page; 21 publish a contact page; 21 list a public email and 1 takes bookings online. 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 Markham quote at no charge?
Free estimates are stated by 18 of the 23 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.