To avoid scratching, staining or etching window glass, it's important to take the proper preventative steps to protect glass before painting around glass. For starters have your painter cover all glass surface's that may be damaged with a protective plastic layer. |
But, if it is too late and you're left with paint on your glass, have him remove the paint - It's usually part of a standard painting contract so, make sure you're covered.
Unfortunately, if you're like most of us and you don't discover the paint until long after the painter has left, I suggest the following course of action.
It is important to understand that you must not use a razor blade on dry glass to remove paint or other over-spray!!! - this will scratch the surface and you'll either have to:
Use a bucket of water with approximately the same ratio of dish washing soap as you would to prepare a sink for dish washing. This is going to create a slippery surface and will help prevent scratches. If you have mirrored or tinted glass make sure the mirroring or tinting is not on the side the paint or over spray is on. Usually, glass is tinted on one side only so, take a close look at your glass before you scrape. If you scrape"coated" glass you run the risk of permanently damaging the surface! Have you ever scratched your sun glasses and noticed everything you see looks normal except were the scratch lies - it appears brighter than normal?
Scrap window's glass perimeter first by angling razor 45° away from window's framing - this will help prevent blade catching and scratching frame and caulking, and prevent breaking the blade. Once perimeter is scraped, use overlapping horizontal or vertical strokes with razor to remove the glass's body of painted surface. Horizontal stroke work well with windows that are wider than they are tall and vice versa for vertical strokes.
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