Painting Over Masonite Bathroom Walls

Bathroom walls made from Masonite should be properly prepared, before applying paint, in order to achieve a long-lasting, professional finish.

1. Cover bathroom fixtures and floors with drop cloths to protect them from paint spills.

2. Sand any glossy areas of the Masonite walls with 120-grit sandpaper until they are dull. Use a sanding block or palm sander and a light touch to prevent gouging or removing too much material.

3. Coat the Masonite walls with a wood water-repellent product. Bathroom walls are subject to mold and mildew from excessive moisture, and Masonite is water-resistant but is not waterproof. Follow the product's directions for drying time.

4. Paint the walls with one coat of a high-quality primer. Allow the primer to dry thoroughly before painting.

5. Apply two coats of a high-quality latex paint. Two thin coats will adhere to the wall better than one thick layer of paint. Allow the first coat to thoroughly dry before applying the second coat.