If you don't yet have a pressure sprayer, think about getting one. With a sprayer you can quickly handle all sorts of exterior maintenance chores, from brightening and sealing a deck to cleaning siding, screens, driveways, and patios.

Mix deck-brightening solution as directed by the manufacturer. Apply the solution with a pressure sprayer. Let the solution set for 10 minutes.

Scrub the deck thoroughly with a stiff brush. Wear rubber gloves and eye protection.

Rinse the deck with clear water. If necessary, apply a second coat of brightener to extremely dirty or stained areas. Rinse and let the deck dry, then apply a fresh coat of sealer or stain.