To prepare exterior wood for painting you need to :
- Scrub away accumulated dirt, filth, mold, and other residue using a mild detergent. When you’re happy with the way the wood looks, rinse it down with a garden hose from top to bottom. Allow a full day for the surface to dry before proceeding.
- Use wood filler to repair big holes, nail holes, and gouges.
- Sand the surface to make it ready for new paint. To grind down sharper edges, start with low-grit sandpaper of approximately 60 grit.
- Prime surface for painting. Select a latex-based primer intended for outdoor usage. These materials are more resistant to the heat, dampness, rubbing, and swelling that outdoor wood surfaces are frequently exposed to.
They may bend a little, making them less prone to cracking than paints that harden into a rigid shell. Your paintwork will appear better and last longer as a result.