How To Clean Window Sills Before Painting. Hold the scraper so the blade is at a low angle, almost parallel to the windowsill. Using a wire brush and scraper, i've managed to get rid of the flaky paint and what's left seems secure.
Make sure you’ve removed all of the dust and anything else that is on the top layer of grime. Clean windows & screens before painting. Give the caulking 24 hours to dry before moving on.
If you close the window while paint is still wet, the.
Your windowsills are now clean. 3 if there's any mould or moss remove as much as possible by scraping and brushing before. Your windowsills are now clean. Now that the windowsills are clean, maintain by dusting weekly or every two weeks as part of your routine house cleaning.