Since 1982, Donpar Roofing Ltd. has been one of Ontario’s most trusted commercial roofing contractors. From our facility in Concord, we’ve spent four decades protecting the buildings that businesses, institutions, and communities depend on — from pharmaceutical facilities and schools to industrial buildings, commercial properties, and residential high-rises.

What sets us apart is how well we know our clients. Many have trusted us with their roofing needs for over 25 years — and that kind of loyalty is earned, not given. We respond quickly, we know your buildings inside and out, and we stand behind every job we complete. That’s the Donpar difference.