The Roofman Inc
“The consistent communication and updates from the on-site manager contributed to a highly professional outcome.”
Best Insulation Contractors in Kitchener, ON
15 contractors listed · 11 in Kitchener · 1 open 24/7 · 6 open weekends · 12 rated 4.5+
Data verified October 18, 2026
National Mold Removal
“We've been so impressed and grateful for the knowledgeable, personable interactions with Colin and his team.”
Rick Macdonald Siding
“He sent out guys to determine whether the old siding has asbestos, and kept me informed with the whole process.”
NGR Roofing Solutions
“Scott was prompt in responding to my inquiries, provided a detailed and transparent quote, and gave me a copy of his insurance and WSIB clearance certificate before I even asked for them.”
Stevenson Insulation Inc
“Price quote was beyond fair and the two employees sent were fabulous.”
Enerliv
“I had a great conversation with the people at Enerliv and the people specialize in their work.”
The 15 contractors listed for Kitchener, 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: Kitchener, ON
11 of the 15 contractors we list are based in Kitchener; the other 4 serve Kitchener from Waterloo (6 km) and Bloomingdale (10 km). The contractors on this page are rated from 4.0 to 5.0 across 864 reviews; 4 have 50 or more reviews and 12 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (95%), quality (85%) and responsiveness (82%). The topics that come up most in reviews of the contractors on this page are "estimates", "price" and "cleanliness". 1 is open around the clock; 6 are open on Saturdays and 3 on Sundays. 2 list staff certifications (GAF and IICRC). 3 have ten or more years of experience, the longest 28 years. 1 offers emergency call-outs; 1 offers financing or payment plans; 8 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 and 10 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.
Will anyone assess the house at no charge?
No charge assessments are advertised by 8 of the 15 contractors on this page. Treat that as a sales visit with a tape measure. A paid energy evaluation is the thorough version, and in some provinces it is also the paperwork that opens the door to a rebate program.
Strong Foam Insulation
Titanium Insulation Inc.
“Jay was super helpful and was able to get our insulation and vents done under a tight deadline for an energy audit.”
Golden Gate Spray Foam & Fire Proofing
Crossroads C & I
“Colleen was a pleasure to deal with!”
Reitzel Insulation
“We have a great experience with the quote all the way up to the removal of our old insulation and installation of the new.”
A1 Pros
“Professional, skilled work at competitive prices.”
Quality Care Roofing Inc.
“The best materials were used, the guys worked hard , got the job done no mess.”
LP Platinum Roofing & Exteriors
“Lucas was there from start to finish working right along with his team.”
Berwick Insulation & Roofing
“The crew was punctual , worked hard and cleaned up as well !”
Why these companies made our list
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