Preparation is Critical
All exterior wood, from decks to fences to siding, should be cleaned before sealing, staining or painting. Cleaning is a crucial step to long-lasting protection. It removes the discoloration that makes weathered wood unsightly and will improve the durability of a waterproofer or stain.
Before cleaning, protect your eyes, skin, plants and other stationary items in the area.
While cleaning, use an appropriate cleaner, power-washer, or a combination of the two, to remove stains from dirt, mildew, mold, algae and prior finishes.
TIP: When using a power-washer, be careful not to spray too close to the fence - you do not want to split the wood or cause it to lift.
Follow product label application instructions carefully. Allow the formula to sit on the fence for the time indicated on the product label, usually 10-15 minutes. Next, scrub the surface using a stiff bristle brush to remove all elements and then rinse thoroughly.