Everyone knows you need sunscreen to protect your skin from the harmful UV rays of the sun. The same principle applies to a wooden fence; but instead of burning the wood will turn gray, warp, crack, or cup.
The solution begins with a thorough cleaning. Use a detergent made especially for fences or decks; and a pressure washer to remove the dirt, algae, and mold that are causing it to discolor.
It’s also important that you don’t allow the cleaner to dry on the wood. Rinse it off within 15 minutes, and be careful not to use too much water pressure. Wood should be washed with pressure between 500 and 800 PSI, or pounds-per-square-inch, to prevent damage.
Once the fence is clean, you’ll want to stain or seal the wood to help protect it from the sun’s UV rays. An oil stain is the best choice to really penetrate and protect your fence for years to come.