Sodium percarbonate is the active ingredient in many home and laundry cleaning products, including powdered eco-friendly bleach products such as OxiClean. When dissolved in water, it breaks down to oxygen, water and sodium carbonate that deodorize, bleach and clean while killing bacteria, viruses, fungi and algae. Dissolved sodium percarbonate proves ideal for deck cleaning, because no harmful chemicals are required to remove mold, mildew or weathered gray residues from your wood deck.
Dissolve 1/2 cup of sodium percarbonate into 1 qt. of hot or warm water in a large bucket or bowl. Stir the mixture to fully dissolve the sodium percarbonate.
Spread the solution on the deck surface, using the mop and bucket to cover one workable section at a time that you can scrub and rinse before it dries.
Leave the sodium percarbonate solution on your deck for 10 to 15 minutes. Scrub with a soft-bristled brush or broom to remove stuck-on dirt and debris. Rub in the direction of the wood grain.
Repeat the application and scrub until the entire surface of the deck is cleaned.
Rinse the deck surface thoroughly with clean water. Mop or sponge up excess water.
Cleaning Mold and Mildew
Dissolve 1/2 cup of sodium percarbonate into 1 qt. of hot water.
Mop the solution onto the soiled wood and let it sit for at least 30 minutes. For heavy mildew, allow the solution to sit for an hour.
Scrub with a soft brush until all mildew and mold are removed. Rinse the deck surface thoroughly with water and mop up excess moisture.