Breaking It Down - Recognizing Criteria For Composite Decking Canberra


How To Clean Trex Decking




If you decide to not seal the deck, you will most likely need to clean it again every year or so. The reason why mildew grows on composite decking is simple.


Preserve Your Deck


Can you use vinegar to clean composite deck?

For composite decking, most manufacturers don't recommend anything more powerful than dish soap and water. Vinegar is powerful and safe for both composite and wood decking, mix a half-cup of white vinegar or apple cider vinegar to ¼ a cup of baking soda with 1 gallon of water.


These products can trap moisture insidethe deck causing more issues in the long run. Choosing the right cleaner can literally make or break your deck. Although the surface looks solid, composite decking is actually quite porous. Therefore, it needs an oxygenated cleaner that can reach deep into the material and clean insidethe deck as well as the surface. When purchasing a cleaner, always check the label and NEVER use a Chlorine Bleach based “deck cleaner”. If the active ingredients read – Sodium Hypochlorite, it contains Bleach.



Buyers Guide: The Best Deck Cleaners


We can safely and effectively remove difficult stains and restore your Trex, TimberTech, Fiberon, composite deck surface. It’s important to hire the MOST EXPERIENCED company that understands what is required in correctly pressure washing composite deck. When conventional degreasers and oil stain removers are applied, they soak deep into composite decking, but only the surface gets scrubbed and rinsed off. Mold, tree sap and mildew are the biggest culprits for stains on composite deck boards. These debris form a biofilm and are tough to remove. It’s important that you use a brush with soft bristles in order to not damage the boards’ finish or color.


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Is there a sealer for composite decking?

Water-based sealers are preferable compared to solvent-based ones. Water-based sealers have two primary advantages: 1) They do not alter the color of the composite decking boards unlike solvent-based products, and 2) They utilise synthetic resins which cannot be used as a food source for algae, mould and mildew.


The cleaning process will go best if you select the right cleaner to begin with. I hate bleach because it kills plants and vegetation and it’s terrible to work with. It will kill the mildew spores, but doesn’t necessarily remove them from the surface of the wood.



How do you restore a composite decking

When Is The Best Time To Clean Your Trex Composite Deck?


Pressure washing composite deck needs to be done correctly using a specialized cleaner which will kill mildew & mold spores completely. Routine cleaning and maintenance are required for both wood and composite decks. Composite manufacturers now admit that there are no "maintenance free" decking materials of any kind. Every decking material needs at least a periodic washing.



Even if they’ve been sealed, wood decks, especially cedar and redwood, eventually begin to dull and take on a weathered, gray appearance. Rusty streaks can also appear around screw heads or along the wood’s grain. These cleaners are usually sprayed on, worked into the grain with a deck brush for even coverage, and then rinsed off with a garden hose. All-purpose wood deck cleaners contain detergents to dissolve surface dirt, spills, and grime.


  • Water penetration will no longer be a food source for lichen, algae, moss, mold & mildew once the sealer is applied.
  • Nothing can entirely stop the return of these types of stains, so it’s best to plan to clean & reseal your deck periodically.
  • Application of an invisible water & stain barrier will prolong the stain free appearance of composite decks.
  • To seal composite decks, apply Surface Saver Sealer, a siloxane sealer that forms a chemical bond below the surface locking out moisture & stains.
  • Although composite decks are not maintenance free, you can reduce the frequency of cleaning by application of Surface Saver Sealer, which has proven to reduce recurrence of future stains.
  • Older composite deck material was not as resistant to stains & UV color fading as newer material.

The bright, crisp composite decking color you get fresh from the factory is not going to be the color you see a year or even 3 months, after installation. Non-capstock decks fade a lot and will eventually fade to a drab weathered gray that looks little different from the color of dingy, weathered wood. Capstock deks also fade, just not as much or as quickly. The only sure cure for this condition is prevention – sealing to restore the barrier that seals the wood particles from the elements.


How To Clean A Trex Composite Deck


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How To Clean Trex Decking


Would you recommend a power wash first or should I just use the cleaner.? There are some stains that I would need to remove though. In addition to simply being easier to work with, there are two main advantages in selecting a water-based product.


Do you need to seal cut ends of composite decking?

Kim Katwijk The cut ends of composite decking will absorb moisture and can swell, as shown here. Sealing the end cuts with lumber wax will help prevent swelling. Because the uncapped ends of the boards are free to pick up water, the core can absorb moisture, which can lead to all sorts of problems.

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