Comfort Zone Insulation
“I had my entire walk-out basement and main floor (both about 1,000 ft²) of my home Spray foamed with closed cell spray foam and R70 blow-in shredded white fiberglass in my attic”
Best Insulation Contractors near Perth, ON
3 of these contractors are based in Perth; the others serve Perth from towns including Ottawa, Nepean and Lyn.
6 open weekends · 21 rated 4.5+
Data verified October 16, 2026
Perth Spray Foam Insulation
“Good communication, very professional and put in extra effort to make sure all work was completed on the tighter schedule I was working with as part of my larger renovation project.”
Top 2 Bottom Insulation
“Ryan sealed each light fixture and took photos to show me completed work and also took photo of the depth of insulation.”
Tailored Home Improvements & Roofing
“As others have expressed, they were on time, worked hard with no loud swearing and music like the other teams that have been on the street.”
The Foundation Guys Inc.
“Jr and his team were very professional and did a fantastic job.”
Profoam Insulation Inc
“They wore their protective gear, cleaned up when finished, and even took their garbage with them.”
The 24 contractors listed for Perth, 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: Perth, ON
23 of the 24 contractors on this page have a rating, from 4.0 to 5.0 across 1,569 reviews; 13 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (93%), quality (87%) and responsiveness (80%). The topics that come up most in reviews of the contractors on this page are "cleanliness", "estimates" and "price". 6 are open on Saturdays and 2 on Sundays. The services the contractors on this page list most often on their websites are attic insulation (4), insulation removal (2), soffit & fascia (2) and spray foam insulation (2). Domain records put 9 websites of the contractors on this page at ten or more years old; the oldest dates from 1998. 3 offer financing or payment plans; 15 give free estimates; 5 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 22 of the contractors on this page; 19 publish a contact page; 16 list a public email and 1 takes bookings online. We count these figures across the contractors on this page; 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 15 of the 24 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.
Carbon Conscious Inc.
“I worked with Carbon Conscious at a recent project of ours and I was very impressed with their excellent quality work and superb communication.”
Energy Tech Solutions Ltd
Ecofoam
“August 12th had basement done today, ecofoam did a superb job of foaming and cleaning recommend for all foaming in your home .”
Ottawa Spray Foam Insulation
“I highly recommend this team for their clear communication, fair pricing, and dedication to maintaining a clean worksite.”
Conger Insulation Limited
“Rob arrived on time, friendly, and was very conscientious about carrying his materials/ tools through my house to not cause any damage.”
A & J Urethane
“He is very knowledgeable and professional our installation has gone great and left the job site so clean too!”
Thermal Systems Mechanical Insulation Services Ltd
Panda Insulation
“Customer service was excellent from beginning of the process until the end.”
David Tulloch Roofing
“Unlike other companies that we consulted for an estimate, Terron Tulloch son of David, came to our house to do the measurements and consulted us on our requirements and provided most helpful and money saving advice.”
Roofmaster Ottawa Inc.
“Great job and very professional from start to finish and cleaned up as they working and left my property spotless when they were done.”
O'Reilly Brothers Ltd
“Dale provided a lot of information during the estimate, which made the decision to proceed with the job a breeze.”
Ottawa Insulations
“I was recommended Ottawa Insulations by a friend, an am very glad I went with them!”
Jorgensen Roofing
“They responded and did the repair in a timely manner, completing the work before the forecast rain.”
Bart's Rooftops
“Myself and my townhouse neighbour obtained three quotes for our roof replacement and together decided on Bart's Rooftops based on our interactions with Daniel.”
Competitive Roofing Brockville
“Competitive Roofing took my 19 year old shingles off, replaced any bad plywood, and put on all the necessary underlay and beautiful architectural shingles.”
Stewart Roofing Ltd.
“Great company and service, from the initial estimate, to the installation, with follow-up to ensure I was happy.”
Godfrey Roofing Inc.
“Godfrey Roofing responded quickly and professionally to repair a small portion of our roof after the May 2022 storm.”
Finelines Roofing & Renovations Ltd
“They answer all your questions patiently and give honest candid suggestions for the piece of work involved to make your house better.”
Why these companies made our list
What customers say about contractors near Perth
- “Outstanding service, best pricing, and reliability. Terry and his crew did a combination of spray foaming and batting in my new home and I was thoroughly impressed by their professionalism and the quality of the work for the price.” — customer of O'Reilly Brothers Ltd
- “Attic insulation installation - good work, on time and with good attention to detail.” — customer of Panda Insulation
- “Would highly recommend. We had our basement spray foamed and we are extremely happy with the work.” — customer of Ottawa Insulations
Excerpts from public reviews of the contractors listed on this page.
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