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Thornhill lies in two cities: Vaughan west of Yonge Street and Markham east of it. In the 2021 Census, more than half of the homes in each city as a whole were single-detached houses. So we start with houses.
Source: City of Markham and Metrolinx (the two cities and their boundary); York Region, 2021 Census Release Report. The 2021 Census has no count for the community of Thornhill.
We mostly wash the outside glass of a house with a water-fed pole and four-stage filtered water. Some windows we clean from a ladder with a squeegee.
We clean a townhome or a semi the way we clean a detached house, mostly with the water-fed pole.
Below 7 storeys, water-fed poles do most of the work. On taller buildings, we use rope access and bosun chairs (seats that hang from a rope).
Our crews also clean the windows of stores, offices and restaurants. They plan the work to keep disruption to your business low.
Homeowners can also have the inside glass, the screens and the tracks cleaned on request. We have pages on high-rise window cleaning and post-construction cleaning services.
The water first runs through a four-stage filter. It takes out the dissolved solids, down to 0 ppm (parts per million), so nothing is left to dry as spots. We scrub the glass with the brush on the end of the pole and rinse it with the same pure water.
Outwash has over 15 years of experience, so we know which method suits which building. For more, see our main page on window cleaning services in Toronto.

We also serve the rest of Vaughan and Markham, and other parts of the GTA. Each name below opens that area’s window cleaning page.
Can’t find your question below? Call us at 1-647-224-2064.

Yes. In condos and tight spaces, we clean the glass by hand with squeegees. After construction, we usually clean it by hand too, with a scraper and a squeegee.
Fill out the quote form on this page, or call us. The quote is free. The price depends on the building, so we quote each job.
Yes. On buildings up to 6 storeys, we mostly use water-fed poles.
We recommend cleaning them at least twice a year, once in spring and once in fall. Storefronts and other busy buildings usually need more frequent cleaning.
Yes. Outwash carries $5 million in liability insurance and WSIB coverage, and all staff hold Working at Heights certification.
Tell us about your windows and we’ll send you a free quote. Prefer to talk? Call us at 1-647-224-2064.