Cedar wood works well for outdoor structures, such as fences, because of its attractive reddish tone, and its resistance to warping, insect infestation and rot. Over time, dirt and weather will turn the timber gray. Cedar can be stained to enhance the colour, or left over a pure colour. Appropriate maintenance can continue to keep the wood looking new for several decades. It can also save you from having to make costly repairs, as untreated wood suffers additional damage from the elements.
Spray the fence with a power washer with a pressure of 1,500 to 2,000 lbs per square inch. This degree of pressure should not damage the wood. Maintain the nozzle 18 inches from the fence surface and move the spray evenly over the fence. Do not linger too long in 1 area. The outer gray layers will wash off, exposing the reddish wood underneath. Wear old clothing and eye protection as the spray will bounce off the weapon back .
Blend 3 quarts of warm water and 1 quart of oxygen bleach in a bucket. Spray the solution on the fence with a garden sprayer, allowing it to sit for 10 minutes. Scrub the fence with a scrub brush to remove mildew and grime. Scrub the fence with clean water when you are finished. Do the fence in sections to maintain the oxygen bleach solution from drying before you scrub. Wear rubber gloves to protect your hands. Wash the fence annually in spring or early summer.
Inspect the fence for loose sections. Tighten or replace any loose or missing screws or nails.
Brush a coat of sealant evenly over the whole fence. Let the sealant dry and apply a second coat. Re-apply sealant every three decades. Wash the fence and permit it to dry before every program.