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24 contractors listed · 10 in Oakville · 2 open 24/7 · 16 open weekends · 20 rated 4.5+
Data verified October 18, 2026
The 24 contractors listed for Oakville, 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.
10 of the 24 contractors we list are based in Oakville; the other 14 serve Oakville from towns including Mississauga (17 km), Burlington (18 km) and Milton (17 km). The contractors on this page are rated from 4.0 to 5.0 across 2,519 reviews; 16 have 50 or more reviews and 20 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (90%), quality (85%) and responsiveness (80%). 2 are open around the clock; 16 are open on Saturdays and 11 on Sundays. The services the contractors on this page list most often on their websites are attic insulation (3), eavestrough (3), commercial roofing (2), residential roofing (2) and roof ventilation (2). 6 show a licence on their websites and 2 list staff certifications (GAF). Domain records put 6 websites of the contractors on this page at ten or more years old; the oldest dates from 1999. 3 offer emergency call-outs; 2 offer financing or payment plans; 12 give free estimates; 7 are family- or locally-owned and 4 list coupons or special offers. 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.
A website is on file for 23 of the 24 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.
