For hard exterior surfaces use a pressure washer to clean the surface and dislodge any loose paint. Allow the area to dry before continuing any other preparation work.
Use a paint scraper to remove any loose paint that was not removed during the pressure washing. Be careful not to damage the surface with overly aggressive scraping. Use a flat file to sharpen the edge occasionally to keep the scraper sharp.
Remove loose paint in hard-to-reach areas with a detailed scraper.
Using a palm sander with 80-grit sandpaper, smooth out rough surface areas and edges.
Purchase or make your own blocks from fouls, wood scraps, garden hose or other household materials. Use these sanding blocks with 80 to 120-grit sandpaper to remove paint and smooth ridges.
Check surfaces closely for cracks, rock or other damage. Mark damaged areas with coloured pushpins or tape so you can find them when making the repairs.
Use caulk, wood fillers or other appropriate materials to repair cracks, holes and other damage.
Use of finishing Sander with 120-grit sandpaper to Sandown ridges and hard edges left from the scraping process, creating a smooth surface.
Use a coarse abrasive pad or 150 great sandpaper disc golf sand glossy surfaces on doors, window casings and surfaces painted with enamel. This creates better bonding surfaces.
Use paintable, silicone caulk for filling cracks in siding and gaps around windows and doors.