Painted wood surfaces, such as siding, decks or patio furniture, need a barrier from moisture. The optimal method is by adding a layer of moisture-resistant primer to the wood before applying a finishing layer of paint. The experts at Home Improvement Super Pages state, “The problem is that wood is a notoriously thirsty substance, and it is easy for water to get absorbed into the grain itself.” For wood that's already painted, adding a layer of wood sealant is the easiest method for waterproofing. Larger projects can take a couple of days to complete, but the added protection is necessary to combat moisture damage.
Things You'll Need
- Liquid detergent
- Cleaning brush
- Garden hose
- Polyurethane or silicone-based wood sealant
- Paint sprayer
- Safety glasses
Mix 1/4 cup of liquid detergent with 1 gallon of water in a bucket. Scrub the painted wood surface with a cleaning brush dipped in the soapy water.
Rinse with clear water using a garden hose. Allow the surface to dry for two to three hours.
Apply an even layer of silicone-based or polyurethane wood sealant using a paint sprayer. These products are available at all home improvement centers. Give the sealant product 24 hours to completely dry.