How to Clean a Composite Deck





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Keeping your composite deck looking pristine doesn’t have to be a headache. As a proud composite deck owner, I’ve discovered some simple yet effective techniques for cleaning that will have your deck looking brand new in no time.

First, start by removing debris, such as fallen leaves and branches, using a broom or leaf blower. By getting rid of the larger fragments, you’ll make the cleaning process much easier.

Next, create a homemade cleaning solution by mixing warm water and a mild detergent in a bucket. You can also use a composite deck cleaner specifically designed for this purpose if you prefer.
Dip a soft-bristle brush or mop into the cleaning solution and scrub the deck boards, focusing on any stains or spots. Be sure to work in small sections to ensure thorough cleaning.

Once you’ve scrubbed the entire deck, rinse off the cleaning solution with a garden hose or a pressure washer set to a low setting. Remember to keep the nozzle at a distance to avoid damaging the deck surface.

Finally, allow your freshly cleaned deck to air dry completely before enjoying the beautiful results. Regularly following these steps will ensure your composite deck remains in excellent condition for years to come. Happy cleaning!


  • Use a soft-bristle brush or broom for sweeping debris off the deck surface.
  • Regularly rinse the deck with a hose to remove dirt and grime.
  • For tough stains, use a mild soap and water solution with a brush or sponge.
  • Follow the manufacturer’s instructions for any specialized composite deck cleaners.
  • Protect the deck from scratches by using furniture pads or mats.


  • Do not use a pressure washer on the deck as it may damage the surface.
  • Avoid using abrasive cleaners or scrub brushes that can scratch the deck.
  • Do not use bleach or chlorine-based products as they can discolor the deck.
  • Avoid placing hot objects directly on the deck to prevent heat marks.
  • Do not let leaves or other organic materials sit on the deck for extended periods as they can cause stains.

Step 1

Thoroughly sweep off the deck surface to remove any dirt or debris.

Step 2

Mix a composite deck cleaner with water according to the manufacturer’s instructions.

Step 3

Apply the cleaner to the deck using a brush or sprayer, covering the entire surface.

Step 4

Scrub the deck with a brush or broom to agitate the cleaner and remove stains.

Step 5

Rinse the deck thoroughly with clean water to remove any remaining cleaner and debris.

Final thoughts 💭

Regular maintenance and proper cleaning are essential for keeping your composite deck looking its best. By following the steps outlined in this guide, you can effectively remove dirt, stains, and mold from your deck. Remember to choose the right cleaning solution, use a soft-bristle brush, and rinse thoroughly. Avoid using abrasive materials or high-pressure washers that can damage the surface. With consistent care, your composite deck will remain beautiful and enjoyable for years to come.

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