303-573-6666 As painters in Parker Colorado, we know to Remove small areas of peeling paint with a wire brush or a five way or a wide-blade putty knife. Always make sure and scrape Scrub under the laps of siding and on downspouts and gutters. Use a putty knife to remove areas of peeling paint. Scrape really well under the laps of siding, downspouts and gutters. For faster work on metal, a 3200 psi pressure washing system always works the best. i always use a sharps scraper and run it back and forth where the peeling paint exist for the best results.