How to Care for Painted Wood

Use dehumidifiers to preserve painted wood when possible. Running a fan can also keep air circulating and reduce moisture levels. Wood absorbs moisture, which compromises the paint's adhesion to the wood. Moisture also causes warping or cracking in painted wood.

Apply a light coat of trisodium phosphate (TSP) to the painted wood with a clean cloth. This will remove any dirt buildup and flaking paint. Rinse the painted wood with a damp cloth, and follow with a dry cloth. If paint flakes off during this process, sand the entire wood surface.

Inspect the painted wood for cracks and peeling paint. Remove peeling paint with paint thinner and a brush or sand it away. Apply wood filler to any holes or cracks and let it dry according to the manufacturer's instructions. Sand over the wood filler with fine-grit sandpaper.

Repaint bare areas. If any paint has peeled off, prime the wood and paint with a matching color. Only apply a light coat of paint and add nothing else. This will return the piece to the look of its original condition.