Cracked, peeling, or blistered paint on wood should be removed and the wood repainted. The method of removal depends on the part of the boat you’re working on. For contours or details, chemical stripper is the best choice. Brush it on; when the old paint bubbles, remove it with a scraper, putty knife, and bronze wool. You can also use a heat gun, but don’t use a propane torch on details. On large, flat surfaces, a torch or a heat gun works well. Heat the paint until it blisters, then scrape with a putty knife. Don’t burn the wood, and be alert to the risk of fire. Antifouling paint on the boat’s bottom is best removed with a sander or grinder.
The paint may be toxic, so work in a well ventilated area, wearing protective clothing, mask, and goggles. Repainting First sand the wood smooth and dust it with a tack cloth. Use sealer, undercoat, and finish paint meant for one another. Use epoxy paint for long life, and disposable foam brushes to minimize brush marks. Some paints call for sanding between coats.