AZ Roofing
“Thank you Darwin, we are grateful that you fixed the roof and resolved the problem.”
Best Insulation Contractors in Scarborough, ON
15 contractors listed · 7 in Scarborough · 4 open 24/7 · all 15 open weekends · all 15 rated 4.5+
Data verified October 18, 2026
Sprayfoam Solutions Toronto Inc
“Very reliable and delivered the job on time and passed the inspection on the first try.”
Canadian Roofing Company Ltd.
“They were very kind and courteous and took the time to talk with me and warn me that they were going to be moving heavy slates off the roof.”
Top Roof Repair
“They are very thorough with their explanations as i had many questions and they take before and after pictures to show their work.”
One Alliance Group Limited
“Keep the good job going especially taking full responsibility, which is so customer friendly.”
PR Foam Insulation Inc.
“He said the previous insulation and venting was well done and that the attic would not benefit from further insulation or venting.”
The 15 contractors listed for Scarborough, ON insulate attics, basements, headers and crawl spaces. Details under each one about materials, hours and advertised services are copied from the company's own site; star ratings and comments come from public reviews.
Area overview: Scarborough, ON
7 of the 15 contractors we list are based in Scarborough; the other 8 serve Scarborough from Markham (15 km), North York (10 km) and Toronto (14 km). The contractors on this page are rated from 4.5 to 5.0 across 2,099 reviews; 11 have 50 or more reviews. When customers rate these contractors on specific qualities, they most often praise professionalism (88%), quality (84%) and responsiveness (81%). The topics that come up most in reviews of the contractors on this page are "price", "estimates" and "cleanliness". 4 are open around the clock; all 15 are open on Saturdays and 9 on Sundays. Domain records put 4 websites of the contractors on this page at ten or more years old; the oldest dates from 2008. 5 offer emergency call-outs; 1 offers financing or payment plans; 11 give free estimates; 1 is family- or locally-owned and 2 list coupons or special offers. We have a website on file for all 15 of the contractors on this page; 14 publish a contact page; 13 list a public email and 3 take bookings online. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
How many listings here have a website?
A website is on file for all 15 contractors here. Look for the materials they install and whether they do attics, basements or both, because plenty of crews specialize in one. Where there is no site, ask the same questions by phone before booking a visit.
Delta Zenic Insulation Ltd
“He cares about ensuring the home is well protected and thoroughly cleans up.”
Alpine Roofing
“All was completed in a single day and the jobsite was left immaculate.”
Eastern Western Construction LTD
“I had the pleasure to work with this company and I'm extremely satisfied with the work, top notch, highly recommended!”
NDS Insulation Inc.
“Very professional, courteous and explained, and showed pictures of the finished job and did a great job cleaning up.”
Bros. Roofing
“Excellent services with good quality products!”
Pro Insulation Contracting
“Professional , reasonably priced and the work was done well with no mess left behind.”
Confirmed Attics & Insulation
“I would recommend anyone to get their insulation done especially now since the government rebate is offered.”
Exalted Services
“When the compressor failed this summer, they were quick to replace the whole compressor and fan unit immediately.”
Konstruction Group Inc.
“Their dedication to customer satisfaction is evident in every aspect of their work, and I wouldn't hesitate to recommend Konstruction Group to anyone in need of top-notch framing services in Toronto.”
Why these companies made our list
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