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How to Finish a Redwood Deck

Adding a finish to your new redwood deck protects the wood and maintains its appearance. A choice of finishes that enhance the beauty of the natural wood are available, depending on the look you want. A clear water-repellent finish maintains a natural color. Bleaching and weathering stains give your redwood deck the gray appearance of driftwood. Semi-transparent stains tint the wood without hiding the natural wood grain and provide good protection from the sun's ultraviolet rays. Once you choose the finish you prefer, apply it to a clean dry surface for the best results.

Things You'll Need

  • Garden hose
  • Spray nozzle
  • Laundry detergent
  • Bucket
  • Stiff bristled brush
  • Protective gloves
  • Broom
  • Deck stain or sealer
  • Wide paintbrush
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Instructions

  1. Cleaning Older Decks

    • 1

      Spray an older deck with a garden hose using a strong spray nozzle to remove leaves and loose debris.

    • 2

      Prepare a mixture of water and laundry detergent in a large bucket.

    • 3

      Scrub the deck using a long-handled, stiff bristled brush dipped in the soapy solution. Rinse with a garden hose as you go.

    • 4

      Allow the deck to dry for three or four days before applying the stain.

    Applying Finish

    • 5

      Sweep away all traces of dust and debris from the deck before proceeding.

    • 6

      Apply sealer to railings and ledges with a wide paintbrush. Brush the sealer on the deck boards, painting in the direction of the grain. Remove any excess material as you go with the edge of the paintbrush.

    • 7

      Apply sealer to cracks in the wood and between boards with a paintbrush, if possible.

    • 8

      Apply a second coat of sealer for a smoother finish, allowing the surface to dry thoroughly between coats.

    • 9

      Allow the surface to dry for at least two days before placing furniture or walking on it.