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A good window cleaning contractor will determine, prior to project start, if cleaning can be done safely, without risk of damage to the windows.
Scrapers and razor blades, when used properly, won’t scratch uncoated glass and are effective at removing construction debris. Plastic scrapers, however, are not recommended because fabricating debris can become embedded into the plastic during the scraping process and will scratch every window it comes in contact with from that point on.

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window cleaning