To clean Trex decking effectively, follow these steps:
- Clear the Deck
Remove all furniture, plants, and debris from the deck surface to access every area easily
- Remove Loose Debris
Sweep or use a blower to clear leaves, dirt, and other loose debris. Use a putty knife or screwdriver to remove stubborn bits between deck boards
- Rinse the Deck
Hose down the deck to remove remaining loose dirt and to prepare the surface for cleaning
- Prepare Cleaning Solution
Use warm, soapy water with a mild detergent (such as dish soap) or a composite deck cleaner recommended by Trex. Vinegar mixed with baking soda is also effective for mold or mildew
- Scrub the Deck
Gently scrub the deck boards with a soft-bristle brush to avoid damaging the surface. Focus on grooves and any stained areas
- Rinse Thoroughly
Rinse the deck thoroughly with a hose to remove all soap and residue. Let the deck dry naturally
- For Stubborn Stains or Residue
Use a pressure washer with a fan nozzle at a maximum of 3100 psi if necessary, but avoid higher pressure to prevent damage and voiding the warranty. Use soap in the pressure washer for tough stains
Additional Tips:
- Avoid pressure washing unless necessary and always use the recommended settings
- Regular cleaning twice a year (spring and fall) helps maintain the deck’s appearance and prevent mold growth
- For mold or mildew, apply a vinegar and baking soda solution and scrub gently
- Always rinse thoroughly after cleaning to prevent residue buildup
This method keeps your Trex deck looking clean and preserves its durability and appearance over time.
