The Ultimate Guide In Cleaning Composite Decking

How To Clean Composite Decking

For composite decking, don’t use a wood deck cleaner—rather, choose one specialized for composite lumber. It really depends on the results your Composite Deck Cleaner can deliver. You don’t have to pressure wash a Trex Deck with Spray and Clean Deck Cleaner. This product was made to clean decks with a simple garden pump sprayer which can save you the cost of renting a pressure washer. When completed, rinse the deck off with water, a pressure washer and/or a scrub brush will assist in the cleaning process. As outdoor spaces, decks are exposed to extreme elements of heat, cold, and moisture. With wood decks, this means annual and semiannual maintenance.

Decking & Railing Duos

Will the Defy deck cleaner likely get the black stains out of the composite deck pores that still remain? If the stains can be removed and I then apply the clear Defy sealer, what likely will be my deck color?

• If the stains can be removed and I then apply the clear Defy sealer, what likely will be my deck color?
• Will the Defy deck cleaner likely get the black stains out of the composite deck pores that still remain?
• Last question, I am replacing an older portion of wooden deck with Trex.
• When dry the current light tan color becomes much closer to the original saddle when wet with water, so would my Defy sealed deck once dried be colored more like it is now when dry or wet?
• Another option I’d like to pursue is changing colors from the tan/cedar tones to a weathered gray.
• Does Defy offer a product to allow me to stain my composite deck, such as Defy Extreme or another product, and therefore change colors?

The Composite Deck Cleaning Process

Remember, if you are going to use a pressure washer it should be no closer than eight inches from the surface and less than 3100 psi. You can perform a semiannual cleaning on your composite deck to preserve its longevity. Pressure washing too close or using too much pressure can ruin your deck. Composite decking material is softer than natural wood, meaning it can be “etched” more easily. Once the material has been opened up, many issues can arise including chipping, sun damage, and mold staining the plastics inside the opening.

Avoid this costly mistake by choosing a non-toxic, sodium percarbonate based cleaner. If this is the first time you have cleaned your deck it’s possible that there are deep set mold stains that the solution didn’t reach. They may rise to the surface at some point and need cleaning again.

Design & Price

I make no guarantees on Trex because even they now it will not be 100%. Fred, that’s odd, composite decks shouldn’t have this issue. Maybe try using our Composite Deck Cleaner and see if that takes it off. If you have a pressure washer, maybe give it a light rinsing after allowing the cleaner to set for minutes. To clean a composite deck, sweep it with a broom or leaf blower at least once a week to get rid of dirt and debris. If your deck is still dirty, hose it down, scrub with a brush and soap, then, rinse with a hose. For a faster cleaning option, try using a pressure washer.

Instead, I recommend using DEFY Composite Deck Cleaner. This cleaner is specifically formulated for cleaning composite decking, including Trex. Like other wood deck varieties, composite decking is quite porous.

If using a pressure washer, avoid using a maximum pressure setting, as too much force can damage the surface. If you prefer to pressure wash your Trex decking, that’s fine.