Just Spray It
“Our house is from 1873, and full of weird framing- original and remedial, and there was no grumbling or complaining.”
Best Insulation Contractors in Peterborough, ON
10 contractors listed · 5 in Peterborough · 1 open 24/7 · 6 open weekends · 9 rated 4.5+
Data verified October 21, 2026
Lifestyle Home Products
“We have also had doors done in the past and everything was great!”
Sam Bowers Roofing Inc
“He ended up replacing missing shingles, banging in nails, capping off my chimney and removing my useless satellite dish.”
D & F Insulation
“They suggested the right insulation for the job especially since we had limited access and the results have been amazing.”
Chemong Insulation
RK Flat Roofing
“Best service I've ever received, it's all about customer service and satisfaction.”
The 10 contractors listed for Peterborough, 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: Peterborough, ON
5 of the 10 contractors we list are based in Peterborough; the other 5 serve Peterborough from Bewdley (24 km), Dunsford (29 km) and Norwood (29 km). 9 of the contractors on this page have a rating, from 4.6 to 5.0 across 758 reviews; 2 have 50 or more reviews. The topics that come up most in reviews of the contractors on this page are "price" and "estimates". 1 is open around the clock; 6 are open on Saturdays and 5 on Sundays. 4 have ten or more years of experience, the longest 27 years. 1 offers emergency call-outs; 6 give free estimates; 3 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 10 of the contractors on this page; 9 publish a contact page and 6 list a public email. 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 10 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.
Bill Larocque's Insulation Inc.
Central Ontario Spray Foam
“Brian and his team showed up on time and were super professional and friendly.”
R-Value Spray Foam
“Scott even worked with us on our budget and gave us a good deal.”
Gerard Canada
“They were friendly, professional, reliable, cleaned up every day and really took pride in their work.”
Why these companies made our list
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