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24 companies listed · 5 in St. Catharines · 5 open 24/7 · 22 open weekends · 23 rated 4.5+
Data verified October 18, 2026
Listed for homeowners in and around St. Catharines, ON, these 24 companies clean windows. Spring fills up fast here, so ask which weeks are still open and whether taking down and washing storm windows and screens is part of the price or an extra.
5 of the 24 companies we list are based in St. Catharines; the other 19 serve St. Catharines from towns including Oakville (47 km), Fenwick (20 km) and Niagara Falls (17 km). The companies on this page are rated from 4.0 to 5.0 across 1,155 reviews; 8 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (90%), quality (83%) and responsiveness (76%). The topics that come up most in reviews of the companies on this page are "price", "efficient" and "estimates". 5 are open around the clock; 22 are open on Saturdays and 14 on Sundays. The services the companies on this page list most often on their websites are window cleaning (6), pressure washing (5), gutter cleaning (4), eavestrough cleaning (2) and house washing (2). 5 show a licence on their websites. Domain records put 6 websites of the companies on this page at ten or more years old; the oldest dates from 2007. 5 offer emergency call-outs; 13 give free estimates; 2 are family- or locally-owned and 1 lists coupons or special offers. 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.
Website links are on file for 20 of the 24 window cleaning listings shown. The page worth finding is the one that spells out inclusions and the method used on upper floors. If a site says nothing about screens, storm windows or how they reach an upper story, those are your first three questions.
