Varnish, dye and dry paint are easy to remove from clear glass that many painters do not mask even windows; they simply come back one day after painting and scratching it with a razor blade. It is not quite as easy to stain or varnish of frosted glass, because this type of glass that scrapes can damage it. You can use strong solvents in frosted glass, though. The only caveat is that you should not allow a solvent to dissolve in final contact with the window frame, or it may cause some damage.
- Spray the window with a cleaning solution window.
- Insert a new blade of a knife and hold the blade at an angle of 20 to 30 degrees against the glass. Work the blade under patches of dry stain or varnish and scrape them. In most cases, the material will come off easily. If not, Apply window cleaner directly to the patch; Wait a minute and try again.
- Spray the window again after the revision has disappeared and the rubber wiper blade dry.
- Spray window cleaner or dilute white vinegar on a patch of dry stain or varnish. Wait a minute or two and then try to wipe the glassware with an abrasive sponge.
- The solvent in the patch with a brush if you cannot lower the substance with the window cleaner. Mineral alcohols remove most varnishes and stains and do not damage the window frame. Acetone or lacquer to stain problem, but these solvents are applied carefully; can soften paint and finishes in aluminum windows.
- Wipe the patches with an abrasive sponge after applying the solvent and then paint more solvent to obtain the residue and clean after a minute or two. Maybe I have to repeat it a couple of times to get all of it.
Wet a cloth with warm water and use it to clean the glass after the stains have disappeared.
Tips & Warnings
- Do not use soap in frosted glass. He gets into the microscopic holes and scratches.
- Acetone and lacquer thinner are your latest resorts. Wear a respirator when using any of these solvents.