Let’s be honest. When was the last time you actually looked at your window sills?
Tape the glass and the wall siding. But leave a 1/16th inch gap between the tape and the concrete—this prevents paint from seeping under and creating a glue seal that peels later. painting concrete window sills
Look for “100% acrylic latex” formulated for concrete, or better yet, a specialized elastodynamic paint that bridges hairline cracks. The 5-Step Process (Do Not Skip #2) Step 1: The Deep Clean You aren’t just wiping off dust. You are removing the "chalk." Mix TSP (trisodium phosphate) or a concrete cleaner with water. Scrub with a stiff brush. Hose it off. Let it dry for two sunny days. Let’s be honest