Sodium percarbonate based cleaners, like our Composite Deck Wash are highly effective because when mixed with water they create a bubbling action much like "alka-seltzer" and when applied to composite decking these bubbles will actually dissolve and lift any organic material to the surface which can be easily cleaned off.

Cleaning is simple, apply the mixture to the affected area of the deck, allow it 15 minutes to penetrate and to start breaking up the stains, while the area is still wet take a deck scrub brush and in circular motions scrub the spots out, when cleaning is complete rinse the area well with water. A pressure washer may be substituted for the scrub brush, but light pressure, max 1,000 psi, is all that is needed.

The key, when cleaning is to clean small sections at a time and always keep that area wet with the mixture while scrubbing, if the area dries before the cleaning is complete the organic matter could settle back below the surface and the process would have to begin again.

Sodium percarbonate is also a great product to use to prevent mold, simply apply a coat to your deck in the spring and fall and this will break up and dissolve any organic matter that is starting to make your deck its new home and food source.

Not all Sodium percarbonate based products are made of the same quality ingredients, strengths vary from 10 to 90% and there are additives necessary to take the sodium percarbonate mixture below the surface of the composite decking, without these additives the sodium percarbonate will only clean what sits on the top of the decking. The right formulation will be the difference in how clean your deck will come out.