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3 of these companies are based in Ancaster; the others serve Ancaster from towns including Hamilton, Burlington and Oakville.
1 open 24/7 · 14 open weekends · 22 rated 4.5+ · 10 show a licence
Data verified October 18, 2026
Listed for homeowners in and around Ancaster, ON, these 24 companies work on exterior walls. Details about materials, colour ranges and insulation options are drawn from each company's own site, and the review quotes underneath are public reviews.
The 24 companies on this page are rated from 4.3 to 5.0 across 4,094 reviews; 20 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (86%) and responsiveness (81%). The topics that come up most in reviews of the companies on this page are "estimates", "price" and "cleanliness". 1 is open around the clock; 14 are open on Saturdays and 8 on Sundays. The services the companies on this page list most often on their websites are eavestroughs (4), skylights (4), flat roofing (3), residential roofing (3) and roofing (3). 10 show a licence on their websites and 2 list staff certifications (GAF). Domain records put 10 websites of the companies on this page at ten or more years old; the oldest dates from 2006. 1 offers emergency call-outs; 3 offer financing or payment plans; 17 give free estimates; 9 are family- or locally-owned and 3 list coupons or special offers. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Websites are listed for all 24 companies on this page. Open them and look for finished houses nearby, ideally after a winter or two rather than on handover day. Close-up photographs around windows and at corners show the standard of the trim work, which is where a rushed job gives itself away first.
