How to Keep Your Redwood Fence Looking Like New

Wash the fence with trisodium phosphate and water. Scrub dirt and stains, using a scrub brush. Clean tough stains with oxygenated bleach. You can also use a commercially prepared redwood deck and fence wash.

Allow the wood to dry completely. Drying times vary, depending on temperature and humidity.

Lay a tarp over nearby plants, bushes, decks and patios to protect them from splashes, drips and overspray.

Apply a coat of mildew-resistant, UV-blocking wood sealer to the fence. Look for a waterproofing sealer that is specific to redwood. Apply the sealer with a wide paintbrush, paint roller or painter sprayer. If you are using a paintbrush, follow the grain and paint in one direction.

Allow the fence to dry for 48 to 72 hours, depending on the weather, before touching it.