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24 companies listed · 23 in Oshawa · 3 open 24/7 · 17 open weekends · 21 rated 4.5+
Data verified October 18, 2026
Listed for homeowners in and around Oshawa, 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.
23 of the 24 companies we list are based in Oshawa; the other one does not publish an address. The companies on this page are rated from 4.3 to 5.0 across 1,517 reviews; 9 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (94%), quality (83%) and responsiveness (81%). The topics that come up most in reviews of the companies on this page are "price", "estimates" and "crew". 3 are open around the clock; 17 are open on Saturdays and 14 on Sundays. 4 show a licence on their websites and 1 lists staff certifications (GAF). 10 have ten or more years of experience, the longest 35 years. 3 offer emergency call-outs; 2 offer financing or payment plans; 18 give free estimates; 10 are family- or locally-owned and 4 list coupons or special offers. We have a website on file for all 24 of the companies on this page; 23 publish a contact page; 19 list a public email and 1 takes bookings online. We count these figures across the companies on this page; distances are straight-line, and 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.
