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Mould and mildew growing on a composite decking can cause an uncomfortable situation for decking owners. This is because they will distort the beautiful surface texture of your plastic wood decking. That is why you must make an effort to remove mould and mildew from your composite decking.

 Removing mould from the surface of your patio is easy when you have the right tools. This write-up explains how you can remove mould and mildew from your composite decking. Also, it gives you details of how to prevent mould from growing on your patio. Let’s commence with removing mould and mildew.

How to Prevent Mould from Sprouting on Your Composite Decking

The best way to prevent mould and mildew from growing on your composite decking is to clean it regularly. Remember that composite decking requires maintenance. When you maintain your plastic wood decking, you will make sure that food and pollen are taken off the surface without letting them decay.

How to Identify Mould

how to remove mould from your decking

If you want to identify mould stain on your composite decking, look for black, oily-looking spots on the surface texture of your decking. 

How to Remove Mould Stain

Step One – Get All the Tools

To remove mould and mildew from the top of your outdoor patio, you will need to get all the tools you will need for the task. Tools you will need for the job are soft bristle brush, a bucket, soap, broom, and a mop. Note that we do not recommend any soap that you should use when cleaning your composite decking. A good dishwashing soap will do if you have one. Aside from those tools, you will need vinegar and baking soda to remove mould from your decking.

Step Two – Clean the Mould 

This is the first cleaning that you will give your composite decking after getting the tools. You will need something like a broom for this task. Use the broom to scratch the spots. This will peel off any mould that grows on the surface of your composite decking. Note that this process will not remove the mould from your decking surface altogether. Doing it will make the task easier for you when you want to scrub your decking surface.

 If this process is slow or if you are a busy person, you can use a power washer. A power washer is faster than using a broom to scrub your decking surface. Please note that when using a power washer, you should not bring the hose of the power washer too close to your decking surface. Bringing the hose near your decking top can destroy it.

Step Three – Mix the Vinegar

Remember that we mentioned earlier that you would need vinegar and baking soda to remove mould and mildew from your composite decking. So, this is the point where you will mix the vinegar and baking soda. We recommend that you mix a solution of two parts of vinegar and one part of the water in a bucket. 

You should make sure that the bucket has a handle so that you can carry it easily. Some decking makers will instruct you to add baking soda to the vinegar at this stage. Whether you choose to or you just mix the vinegar and water is fine.

Step Four – Pour the Solution on the Spot

After mixing the vinegar with water, you can pour the solution on the mould. Ensure that you identify all the spots that mould grow on and pour the solution on them. After you have poured the mixture, you can then sprinkle baking soda all over the area. 

The baking soda and the vinegar will work together to remove the mould stain. You should allow the vinegar to stay on the composite decking surface for at least 20 minutes so that removing the mould will be more comfortable.

Step Five – Scrub the Surface of Your Decking

After the vinegar has stayed on the top of your decking for about 20 minutes, you can get your brush because it is time to scrub. Please, ensure that you use a soft brush for the task. This is because a hard brush will peel off the top of your composite decking. Make sure you scrub along the grain of your composite decking boards and that you scrub correctly to remove all traces of mould.

Step Six – Rinse with Water

When you are done scrubbing your composite decking, you can rinse the top with water so that it will be clean. You can rinse with a hose, or you can use a power washer to wash off the soap from the surface of your patio.

Conclusion

How to remove mould and mildew from your composite decking is straightforward. All it needs is vinegar, baking soda, a soft brush, water, and your time to do the task.

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