How To Get Rid Of Mold Under Your Deck
Contents
- How To Clean A Composite Deck, Remove Mildew, Mold, Stains
- It's Not Always The Same Mold, Same Mold With Composite Decking
- Contact Newtechwood To Learn More About Our Composite Deck Materials
- Dirt, Grime, Tannin, And Mildew Stains
- How To Clean A Composite Decking
- Pressure Washing Composite Decking
- How To Clean Mildew And Mold Off Composite Decking
How To Clean A Composite Deck, Remove Mildew, Mold, Stains
You shouldn't have to clean and scrub for countless hours on such expensive, "low maintenance" products. This company lies and makes false claims about its products. My 19 year old pressure treated small decks are so easy comparatively! I just pressure wash them and apply a coat of stain annually. First, I have to clean the mold off three times a summer. The first time, I clean in March or April with TSP, Clorox, and Dawn dish soap. The wonderful Corti-Clean cleaner can NOT be used under 60 degrees, so we can't use that till our second cleaning when it warms up in June.
It's Not Always The Same Mold, Same Mold With Composite Decking
Works for several years and recommended by some big deck manufacturers for remove mold, mildew stains from a composite deck. The images in this post are exactly what the product was designed to help eliminate. Like one of the previous members, we are working to create awareness that bleach is bad for composite decks and docks. I have followed the recommendations from the timbertech literature and the customer service representative. It really bugs me that they repeat over and over that pollen and environmental stuff is a breeding ground for mildew. My pressure treated lumber small decks that have stain have no problem with mildew, only the big Timbertech deck.
Contact Newtechwood To Learn More About Our Composite Deck Materials
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You may, however, still experience some deck mold, especially in wetter climates. The only sure-fire way to remove deck mold from composite decking is with some elbow grease and a recommended deck cleaner that contains Sodium Hypochlorite.
- If the stains can be removed and I then apply the clear Defy sealer, what likely will be my deck color?
- Does Defy offer a product to allow me to stain my composite deck, such as Defy Extreme or another product, and therefore change colors?
- Another option I’d like to pursue is changing colors from the tan/cedar tones to a weathered gray.
- Will the Defy deck cleaner likely get the black stains out of the composite deck pores that still remain?
Dirt, Grime, Tannin, And Mildew Stains
Just like wood, uncapped composite decking can develop mold. Learn how and why this can happen, what to do to remove it, and the steps you can take to prevent mold from returning. If this doesn't work, you may need to try a commercial composite deck cleaning agent.
This product can prevent mold, mildew, lichen, and algae from appearing. For maintenance even if mold is not present, spray Wet and Forget onto the deck’s surface and let it do the work for you. No scrubbing, rinsing, or pressure washing involved. This is a non-caustic product that contains no bleach or acidic material. It can be used on almost any type of wood or composite decking. To clean a Trex deck, start by mixing equal amounts of composite decking cleaner and water and using it to scrub down the deck twice a year. Once you’ve scrubbed away any dirt and grime, rinse the cleaner off with a hose or a power washer.

At Fiberon, our patented cap layer is called PermaTech®, and it contains a special formulation of biocides, anti-oxidants, and other proprietary ingredients. This unique blend of ingredients helps the composite decking resist staining and fading, as well as inhibits mold growth. And while no one can guarantee a deck will never develop mold, a capped composite board does provide significant advantages over wood and uncapped products. Capped polymer and 4-sided capped composite decking provide homeowners with a great alternative to traditional composite and wood decks that are susceptible to mold and mildew. While composite decking is known for being a step up from wood decking, not all boards are created equal.
I am a chemist and work with composite decks. You may create a worse problem than you had and possibly ruin your expensive deck if you use bleach or acids. There are also treatments to help protect the deck from mold/mildew and other stains (dont use a coating/paint or you will be in for a lot of work every couple years). We love a product called resist mist for composite decks ().