Have you noticed that there are dark spots on the surface? There are dark spots on your deck. Mould can sometimes grow on the surface of a wood plastic deck, but engineers made it strong and durable. Failure to maintain the wood plastic deck can cause mould growth, and the old uncapped deck can also drive mould growth on the surface. There are steps you can take if you discover mould on your deck.

Mould resistant decking

How do I get mould off the deck? In the past, engineers have made decking to resist mold. The boards are coated with an extra layer of plastic. The plastic shell on the deck’s surface prevents the boards from getting wet. There was an older generation of decking before the newer generation was developed. There is no plastic protection on this type of deck. It is susceptible to mould attack. The wood part of the deck is destroyed when the moulds reach the surface. There is a high chance that decay will destroy the old generation wood plastic deck. 

What causes the mould?

Failure to maintain the deck can cause mould growth. Maintenance is required for every structural material. The wood plastic is exposed to the elements and the fungus in the air. Organic materials like leaves or twigs on your deck will decay when fungus comes into contact. Homeowners that don’t remove leaves, food and twigs from their deck should prepare for mould growth. Structural damage to your deck will be caused by mould. 

How can I prevent my decking from mould?

There are several ways to get rid of mould. The modern or newer generation boards can be installed. 

Keep your deck clean 

It is possible to clean the surface of your deck. The problem of the old deck was solved with the installation of the newer generation. The protective shell on this outdoor deck is made of a thick plastic coating. If the boards are wet, there is a damp condition on the surface. Mould will grow on the surface of your wood plastic deck if it is damp. When water spills on the deck, it won’t become damp. The boards will not get wet. It is not likely that it will become damp and create the right condition for mould. Homeowners who don’t clean their wood plastic deck often leave it exposed to decay and mould. 

Do not leave food on your deck

It’s a bad practice to leave things like food and leaves on the deck. You must sweep leaves and food droppings from the top of your deck to prevent mould from destroying it. You should clean the deck top immediately if there is water on it. If you discover mould growing on the surface of your wood plastic composite deck, you should not hesitate to remove it. If left unattended, mould can decay the surface. 

Use soapy water to clean your deck 

If you want to remove mould, you can use soapy water and a brush. It is possible to remove mould from your deck. If you use bleach to clean your wood plastic deck top, it will remove the colour. It is recommended that you use the right soap to clean your deck. To remove the mould, you should rinse the wood plastic deck with your hose. You can mix the two parts of vinegar with the water in a bucket. You should sprinkle baking soda on the mould after pouring the solution. Use your brush to get the mould off the surface. After cleaning the deck, rinse it thoroughly. 


How do I get mould out of the deck? Pour the solution into the mould. You need to scrub the wood plastic deck surface with a brush to remove mould.

Read more: How long will the composite decking last?

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