Sealing Wood Siding
Rinse your siding with a garden hose using a spray nozzle with moderate pressure. Avoid using a high pressure washer, as it will cause water to penetrate between the boards.
Mix oxygen bleach in a bucket per the manufacturer's instructions. You can purchase oxygen bleach at most hardware stores. The higher-priced products with a greater quantity of oxygen work best.
Use a long-handled scrub brush to scrub all of the siding with the oxygen bleach. Leave it on for 15 minutes, and then hose it off with a garden hose. Allow the siding to dry thoroughly.
Apply a good quality water repellent wood sealer to the siding with a paint roller. Read the label to make certain that the sealer is resin-based and not oil- or vegetable-based, as they encourage mold growth. The sealer can contain a stain, or it may be clear. Allow the sealer to dry. If the manufacturer recommends a second coat, apply it once the first coat has dried thoroughly.
Things You Will Need
- Oxygen bleach cleaner
- Long handled scrubbing brush
- Garden hose
- Resin-based water repellent sealer
- Paint roller
- Paint tray
- Do not use a bleach-based cleaner to clean your siding. Not only will it cause the siding to fade, the bleach will kill flowers and trees around your home. Read labels carefully; the chemical name for bleach is sodium hypochlorite.