Once the loose paint is scraped away and all remaining paint has good bond to the surface, the next step is to sand the surfaces where paint has been removed. It is important to feather or blend and minimize the hard edge visible at the seam of where paint has been removed and where it remains. Feathering is especially important on wood siding since siding is smoother than say a painted brick surface and surface irregularities are more noticeable on smooth siding.
- Before sanding fill in any cracks, holes or gouges with exterior epoxy wood filler and let dry.
- If you have large areas that need patching, either replace the wood or if it's not that serious, you can try an automotive body filler instead of wood filler.
- With the paint scraped and the holes filled, you are ready to sand. Start with about an 80 grit sandpaper and an orbital power sander for larger areas.
- For smaller sanding areas, a sanding block with hand sanding works well. Use about 120 grit sandpaper in these areas.
- Sand areas smooth working to feather and eliminate all hard edges.