David Latchford Construction Ltd.
“My roof and carport were rotted out badly and the effort that went in to making it right was fantastic.”
Best Insulation Contractors near Grimsby, ON
1 of these contractors is based in Grimsby; the others serve Grimsby from towns including Hamilton (27 km), Stoney Creek (16 km) and Smithville (15 km).
2 open 24/7 · 8 open weekends · all 13 rated 4.5+ · 4 show a licence
Data verified October 18, 2026
Capela's Roofing
“It's refreshing in this day and age to see a company like Capela's Roofing who takes pride in all their work.”
Envirotech Exteriors Inc.
“I must say that I have very rarely came across a team that goes above and beyond what is expected.”
Sameday Roofing
“Extra caution was used as we live really close to our neighbors, which was very appreciated”
Gateway Roofing
“In stark contrast to the other contractors, Jason and his crew were incredibly professional, pleasant, efficient, timely, considerate and most importantly, TRUSTWORTHY!”
Power Vac Services Hamilton & Power Environmental Management
“Service was professional and thorough; good communication before and after the work.”
The 13 contractors listed for Grimsby, 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: Grimsby, ON
The 13 contractors on this page are rated from 4.7 to 5.0 across 1,731 reviews; 8 have 50 or more reviews. The topics that come up most in reviews of the contractors on this page are "price", "quality" and "cleanliness". 2 are open around the clock and 8 are open on weekends. 4 show a licence on their websites and 2 list staff certifications (GAF). 5 have ten or more years of experience, the longest 29 years. 2 offer emergency call-outs; 2 offer financing or payment plans; 5 give free estimates; 3 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 13 of the contractors on this page; 11 publish a contact page; 12 list a public email and 1 takes 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 13 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.
Wooly Insulation Inc
“Greg and his team did a fantastic job of re-insulating our attic, meeting all our needs and providing fast, efficient and professional service at a very reasonable price.”
Goldstar Roofing and Siding
“No need to shop around (I've already done it), give these guys a call.”
Gerry's Roofing & Siding Inc
“4 installers showed up and were excellent in clearing old shingles, also installed some plywood and also shingles to prevent ice jams.”
Brunet Exteriors
“Craig explained to me what he was doing and thanked me many times for laying plastic and having space for them to work..”
Born To Foam
“They are fantastic to work with, never creating problems or difficulties, always solving problems and getting the job done well.”
Enersystem Insulation Limited
Pro Insul Limited
Why these companies made our list
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