Warner Roofing Inc.
“Everyone was great to work with from the first phone call to the repair technician, Clay, who did an excellent job and took plenty of pictures to show us both the problem before and then after the repairs.”
Best Insulation Contractors near New Tecumseth, ON
These contractors serve New Tecumseth from nearby bases in towns including Newmarket, Aurora and Bradford.
10 contractors listed · 5 open weekends · 9 rated 4.5+
Data verified October 18, 2026
T. Simpson Roofing
“Came and did a very thorough inspection and was a great help.”
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The Next Level Consulting
“The team at Next level Consulting provided excellent service and their team was very through and professional.”
Dilmar Roofing
“Arthur came to the door before they began to ask if we had any questions and the guys worked hard all day long and got the whole job done in a day!”
Canada Green Insulation Inc
“Canada green Insulation is one of the best company in this field ,they are highly professional and knowledgeable people, Thank you”
Spray Foam Gta/Right Choice Spray Foam
“The quote was more than reasonable, and they showed up when they said they were going to and did exactly what he said they would.”
The 10 contractors listed for New Tecumseth, 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: New Tecumseth, ON
The 10 contractors on this page are rated from 4.0 to 5.0 across 707 reviews; 4 have 50 or more reviews and 9 are rated 4.5 or higher. The topics that come up most in reviews of the contractors on this page are "cleanliness", "efficient" and "estimates". 5 are open on Saturdays and 1 on Sundays. 3 have ten or more years of experience, the longest 19 years. 2 offer financing or payment plans; 4 give free estimates and 2 are family- or locally-owned. We have a website on file for all 10 of the contractors on this page; 8 publish a contact page; 8 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.
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.
Gorilla Insulation- Spray Foam and Drywall
“He came up with a great solution that eliminated the need for us to do any major repairs inside.”
Elaras Construction
“Their service is affordable and they are great in arrange projects”
Brown Brother Roofing & Exterior Finishing
“Glen and his team are very knowledgeable when it comes to roofs and exterior finishing!”
Paragon Roofing Inc
“3 guys came and quickly repaired our roof as promised and charged same amount.”
Why these companies made our list
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