Yes, you have the deck of your dreams. The last thing you want to do is not receive a mark. Stains on your composite decking should be addressed as soon as possible. They might be produced by red wine from the previous night's party, mould development from inclement weather, or a potted plant that left a mark.



Follow these procedures to remove the mark before it develops into a stain.



Stains that often occur on plastic decks.

Stains cannot pass through composite decks, but they also cannot enter them. If you barbeque or dine on your deck, food, alcohol, or fatty oil will most certainly discolour it.



Fruits, tree sap, and bird droppings may stain deck planks if they are placed under trees. Mildew and mould may form on leaves and pollen as well.



There is no need to have special deck cleanser, bleach, or harsh chemicals on hand. Dish soap, warm water, and some elbow grease will do the trick.



How to remove stains out of composite floorboardsSpots and lines on your composite floor boards should be repaired as soon as possible, before the colour settles in. When attempting to remove stains from your wood boards, follow these instructions for best results.



What You Need:

  • Bucket
  • Soft sponge or cloth.
  • Broom with gentle bristles.


Tip 1: Use the appropriate approach for the damage you have.

To erase markings left by oil, grease, filth, wine, food, dirt, or bird droppings, use a soft brush to remove any loose dirt or dust.



Warm water, dish soap, or dish detergent combined in a bucket are generally sufficient to clean the surface of your deck. Use a sponge to follow the grain of the deck planks. Use a hard-bristled brush to remove any remaining debris. Next, sprinkle the area with cold, fresh water from your yard hose.



If you want to remove mildew, mould stains, or algae markings, combine baking soda and vinegar. Combine a half-liter of white vinegar and a half-cup of baking soda in four litres of warm water.



Tip 2: Use a power cleaner to remove difficult stains.

If the colour is really poor, try a power cleaner. However, to avoid damaging your deck, keep the tip of the high-pressure washer at least 30 cm away from the railing. You might also use a solution of sodium carbonate, like Selley's sugar soap.



Oxalic acid may be used to remove rust and ink marks. It is a chemical compound that is readily available in home stores.



Tip 3: Maintain maintenance duties.

Every week, brush off your deck to remove dust and other debris, such as potted plants and furniture. This also allows you to verify the boards for any issues that may result in permanent markings. Wipe off your deck with a sponge every now and again, and follow the instructions below to avoid stains.



Here are some additional terrific methods to clean and maintain your composite decks.



Tip 4: Get rid of the mould immediately away.

Mould is another issue that may arise on composite decks. Spots might be mistaken for stains.



The good news is that composite decking is less prone to mould than wood decking. If you have mould on your composite deck, all you need to do is follow these easy cleaning instructions. On the other hand, the same mould and mildew may quickly cause decay on a hardwood deck. To clean, use warm water and a gentle brush to remove bacteria. If the mould is really tenacious, you may need to apply more power or a lesser quantity of mould cleaning.



Remove the source of moisture that allowed mould to develop. This is the most effective technique to prevent it from returning. Make sure water can flow off your deck and that the crevices between the boards are not obstructed so that water can drain. Also, make sure that pots and plants are put on footed holders that will not retain water.



Here are some additional tips for cleaning up mould on your wood deck.



How to prevent spots from occurring again.

To remove a stubborn stain from a wood deck, sanding is required. However, with proper maintenance, a composite deck may remain in excellent condition for many years.



Here are some simple maintenance recommendations to keep your composite decks in excellent condition and free of stains.



Using a soft broom once a week can help keep your deck looking beautiful.

Using pot feet or supports helps prevent plants in pots from staining decks.

Grilling leaves oil and grease streaks on barbeque mats.

Put an outside rug beneath the tables to collect spills, but remember to take it out while you're cleaning.


Read our complete guide on how to clean and care for composite decking for additional information on how to keep your decking looking like new.





Visit Superdeck Composite Decking to learn more about the advantages of composite decking.