Using a Power Washer on Composite Decking

Whether you're renovating your home's older deck or creating a brand new outdoor living space for your family from scratch, installing composite deck boards can change your deck perspective! Made from incredibly durable materials, composite deck boards are fade, rot and mold resistant so you can skip the yearly staining and painting and spend that time relaxing in peace. But a major question that a lot of homeowners, DIY deck builders, and deck owners ask is, "Can I clean my composite decking with a power washer or pressure washer?"

Learn if you can clean Trex or Deckorators composite decking with a power washer in this post

In short, the answer is no. Composite decking brands such as Trex, Deckorators, Fiberon, DuraLife decking, and more all recommend skipping the tough power washers or pressure washers for a safer solution.

Power washers or pressure washers can easily strip or damage composite decking while being used. If using a non-fan tipped nozzle or hesitating in one spot for too long, those composite boards can become dented or chipped.

Composite decking brands recommending give your composite deck boards a thorough cleaning at least once a year to remove any sap, pollen, or debris that may have accumulated.

Simply use gentle liquid dishwashing soap such as Dawn® or Joy® mixed with some warm tap water and scrub the board with a clean rag, soft bristled brush, or broom. When the scrubbing is complete, rinse away the soapy residue with clean water. If you desire then towel dry the deck lightly, or allow it to dry in the sunshine.

Can I Use a Power Washer on Composite Deck Boards?

Learn more about how to keep your Trex decking, Deckorators decking, or Fiberon composite deck looking its best year after year with this helpful video!

As always, if you have any questions on what type of decking will work best for you, deck design help overall, or any other deck building detail; please feel free to give one of our deck designers a call at 1-888-824-5316. Or send in an email to with some project photos and we can start planning from there!

Shop Composite Decking

Browse more deck design and railing style notes to upgrade your backyard space and deck in the DecksDirect Railing Style Guide. The easiest way to learn if your home is more suited for a classic aluminum deck railing or a strong, composite railing line.

The more you know, the better your deck and backyard projects will be! Whether you're looking at a brand new start or a fresh end-of-season deck renovation, give our deck designers a call at 1-888-824-5316 or send us an email at Our deck experts will help you get the information, products, and tools you need for a gorgeous deck that you created and designed!