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None of these companies is based in Clarington; they work from towns including Oshawa (20 km), Whitby (27 km) and Peterborough (47 km).
24 companies listed · 13 open weekends · 19 rated 4.5+
Data verified October 18, 2026
Listed for homeowners in and around Clarington, ON, these 24 companies fit and repair windows. Frame materials, glazing options and any credentials shown are taken from company websites; the customer lines are quoted from public reviews.
The 24 companies on this page are rated from 3.9 to 5.0 across 1,275 reviews; 5 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (86%) and responsiveness (83%). The topics that come up most in reviews of the companies on this page are "price", "estimates" and "efficient". 13 are open on Saturdays and 4 on Sundays. The services the companies on this page list most often on their websites are eavestrough (3), siding (2) and window installation (2). Domain records put 10 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 2 offer financing or payment plans; 13 give free estimates and 3 are family- or locally-owned. We have a website on file for 18 of the companies on this page; 15 publish a contact page and 13 list a public email. 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.
A no-cost quote is offered by 13 of the 24 companies on this page. It comes with a sales visit, so agree how long it will take before they arrive. Ask for the quote in writing on the day, itemized by window, and be wary of a discount that disappears the moment the visit ends.
