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How to Clean Deck Boards

Updated July 19, 2017

A dirty deck with discoloured boards is unsightly and can take away from the overall appearance of your home. The discolouration is the result of mildew, algae, debris and stains that can be removed fairly easily with common household supplies. Practicing a little simple maintenance can keep your deck looking clean and neat. Let your deck be an asset to your property rather than an eyesore.

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  1. Sweep the large debris from the entire deck with your broom, taking special care to get in between the boards.

  2. Get your two buckets. In one bucket, mix in one cap of washing powder and fill with water. In the other bucket, mix in two scoops of oxygen bleach and fill with water.

  3. Scrub the entire deck with your long-handled scrub brush and the washing powder mixture. This mixture will remove dirt and water stains from the deck.

  4. Rinse the deck with the water hose removing all the soapy water from the surface.

  5. Use your scrub brush and scrub the deck using the oxygen bleach. This mixture will remove mildew and algae from the wood.

  6. Rinse the deck thoroughly and allow it to dry.

  7. Tip

    Make sure your deck has time to dry to prevent the return of the mildew. Consider sealing the deck to prevent the return of mildew and algae.


    Be sure to wear gloves and safety goggles.

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Things You'll Need

  • Broom
  • 2 buckets
  • Washing powder
  • Oxygen bleach
  • Scrub brush with broom handle
  • Water hose
  • Gloves
  • Safety goggles

About the Author

Ava Fails has worked professionally as a writer for over five years in genres ranging from technical writing to web content development. In addition to writing, Fails' educational background includes five years of study in computer graphics.

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