FS Roof Systems AND Exteriors
“I have a flat roof and I felt confident the owner and crew had the extra certifications required for specialized flat roofs.”
Best Roofing Contractors near Dundas, ON
1 of these companies is based in Dundas; the others serve Dundas from towns including Hamilton, Oakville and Burlington.
6 open 24/7 · 16 open weekends · 22 rated 4.5+ · 8 show a licence
Data verified October 18, 2026
House & Hammer Roofing
“We appreciate all the time spent by the crew not only on the professional roofing job but also in taking really good care to clean up the whole site afterwards.”
Complete Roofing & Insulation
“Have worked together on numerous projects over the years, wouldn't even consider another company”
Real Blue Roofing Services Inc
“Dil & his team are extremely professional and did an amazing job in a timely manner at reasonable rate.”
Elite Roofing Inc.
“Elite roofing inc responsible professional they did exactly what they promised and more with asking for more!”
Gentech Roofing
“I gladly recommend Gentech Roofing to anyone needing flat roof work for commercial & industrial projects in the GTA.”
Listed for homeowners in and around Dundas, 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: Dundas, ON
The 24 companies on this page are rated from 4.3 to 5.0 across 3,827 reviews; 21 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (89%), quality (89%) and responsiveness (89%). The topics that come up most in reviews of the companies on this page are "estimates", "price" and "cleanliness". 6 are open around the clock; 16 are open on Saturdays and 12 on Sundays. The services the companies on this page list most often on their websites are eavestrough (5), insulation (3), roofing (3), attic insulation (2) and flat roofs (2). 8 show a licence on their websites and 2 list staff certifications (GAF). 10 have ten or more years of experience, the longest 28 years. 6 offer emergency call-outs; 5 offer financing or payment plans; 17 give free estimates; 6 are family- or locally-owned and 4 list coupons or special offers. We have a website on file for all 24 of the companies on this page; 21 publish a contact page; 22 list a public email and 2 take 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 Dundas quote at no charge?
Free estimates are stated by 17 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.
Maximum Roofing Inc.
“They were able to diagnose how water was leaking through the roof of our house and were so kind to us through the process of correcting it.”
Alpha Alliance Roofworks
“The guys were always on time and kept the job site pretty clean.”
Master King Roofing Inc
“I was very impressed with the workmanship and attention to detail, especially with the Velux skylights.”
Capela's Roofing
“The Capela Team performs at the highest level of professionalism and customer service.”
Edge's Roofing Co
“They respond quickly, explain everything they need to do and stand behind their work.”
D'Angelo and Sons
“Spoke with David who was very helpful and insightful about the issues and solutions regarding my roof.”
Paramount Metal Roofing
“From the initial meeting with the sales rep to the final installation of the new roof on our house, dealing with the Paramount team was a very enjoyable experience.”
Sameday Roofing
“My gutter hangers were also blocking the bottom of the roof where the drip edge was to be installed but they reworked this for me so that it now aligns cleanly under the newly installed drip edge.”
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Newfoundland Roofers
“If their eagerness to help neighbours is any testament to the heart they put into their roofing, then this company deserves more than five stars.”
Available Roofing
“Joe is a very hospitable and an easy to deal with person, he personalized my service and ensured that my needs and requirements were met.”
The Eavestrough Company
“They really took the stress out of the situation I was in, and it was a good experience from beginning to end.”
Cover Gta Roofing Inc.
“Very professional and respectful, they are a pleasure to deal with and show up when they say they will, which is not the case with many contractors.”
Sharp Exteriors Roofing and Window
“The team was extremely punctual, completed all work in a timely and quality manner, was respectful of my family, and cleaned up everything before heading out”
Gateway Roofing
“They removed and replaced my evestrouff, they were on time, professional and friendly.”
Halco Roofing Inc
“To Larry and Lisa and to the whole team we thank them for a seamless process and professional roof installation.”
Custom Contracting Roofing & Eavestrough Repair
“Jay and Darin did such a impressive job that we had them create a custom aluminum design band around the front of the house.”
Silver Oak Roofing
“Excellent advice and service provided by very hard working individuals who finished work efficiently.”
Fanattics
“Richard and his crew did a great job adding insulation to our attic.”
Why these companies made our list
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