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Maintenance and Maintenance of Composite Decking Boards

Wednesday, April 17, 2024

If you’ve just built a composite decking, you may be curious about how to care for and maintain your composite decking. How do I use my composite decking to get the longest life out of it? We’ll answer these questions and let you know how to make composite decking beautiful and functional.

You’ll be glad to know everything you need to know about caring for your composite decking. This is because composite decking material requires little to no maintenance. It doesn’t require regular maintenance, painting, and sealing work like traditional wood decking. All you need to do is to clean composite decking boards regularly to keep them looking great.

Precautions Before Cleaning Composite Decking

When using any product to clean composite decking, make sure that you always follow the rules of safe use as well as proper use of the product.

Always test the cleaning products in a small, hidden area of the deck to make sure that they will achieve the results you want.

Do not mix bleach with other cleaners such as ammonia or phosphoric acid.

Always spray water on plants and trees around your deck before and after applying any deck cleaner. Make sure to completely cover any sensitive plants.

Sometimes you will have to keep using the cleaner on stains that cannot be removed until you achieve your desired results.

Remove Dirt and Debris from Composite Decking

Removing dirt and other debris from your deck once a week with a broom or leaf blower will keep composite decking cleaner for longer. Take care to clear the gaps between decking boards to avoid a prolonged buildup of dirt that can lead to mold growth.

If necessary, use mild soapy water and a soft bristle brush to gently remove dirt and spots that cannot be removed. composite decking has excellent stain resistance and mild soapy water will remove most stains.


Remove Mold and Mildew from the Surface of Composite Decking

Although mold and rot will not occur on composite decking. But if too much organic debris builds up on the surface of the decking over a long period of time, then that debris can mold or rot. Then sometimes, you will need to learn how to remove mold from the surface of composite decking.

Before you begin, make sure you read and follow all instructions and safety tips from the manufacturer of your cleaning product. Wear the proper safety gear, such as safety glasses and gloves. Follow the instructions for advanced deck cleaner to quickly remove mold and mildew from composite decking.

This is a bleach-based composite decking cleaner that may make the deck surface look brighter. Apply it to the entire deck surface for best results and to keep the color consistent. Clean up biological stains such as bird droppings as soon as they are found on the deck. Otherwise, the natural tannins will stain the deck and require a more thorough cleaning.

Removing Stains and Rust from Composite Decking

Black stains known as “tannic acid” may appear on composite decking boards. These stains can also appear on other wood decks. Tannic acid stains will fade over time. Alternatively, you can remove them quickly with a composite decking cleaner that contains oxalic acid.

Use this deck cleaner to remove water stains and rust. If you want to brighten your deck, you can use a wood deck cleaner that contains oxalic acid or phosphoric acid. Be sure to follow the instructions on the bottle. Apply the cleaner to the entire surface of the deck for best results and to keep the color consistent.

Tannic acid oil also washes away organic or vegetable matter as it dries. Cleaning it off with a broom will help prevent these spots from appearing. Therefore, removing dirt and debris from the deck surface on a regular basis will help keep composite decking looking great.

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Cleaning Oil Stains on Composite Decking

As soon as you notice stains on your composite decking caused by food scraps or grease, use household detergent to remove them. Gently scrub the area with soapy water and a cotton brush, then wash the decking well with water.

If the stain remains for more than two hours, it is best to use a degreaser specifically for composite decking.

How Do I Pressure Wash My Composite Decking?

If you need to remove accumulated dirt, you can pressure wash your composite decking. However, be careful when using high-pressure cleaning as too much pressure cleaning can damage the composite decking and it cannot be repaired.

When using a pressure washer, you need to fan the wide nozzle. Also, keep the nozzle at least 9 inches away from the surface of the decking. On the other hand, the pressure setting of the pressure washer should not exceed 1300 PSI. The last point to be noted is that when cleaning composite decking, it is important to clean in the direction of the wood grain.

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How to Remove Snow and Ice from Composite Decking

To prevent these from staining composite decking boards, use a clear ice melt or rock salt. Choose an ice melt that states it can be used on the deck and is safe for children and pets. A push broom can be used to clean up excess ice melt or salt from the deck.

As soon as it is warm enough outside, wash the composite decking with warm soapy water. then rinse thoroughly with water to remove any rock salt or ice melt left on the deck surface.

Sharp snow removal tools such as metal shovels should not be used. as they may accidentally injure the surface of the composite decking boards.

Do not spread sand on the deck to make it easier to walk on. Sand is very rough and will scratch any surface of composite decking.


In conclusion, maintenance of composite decking over time is critical to maintaining its appearance, durability, and longevity. Regular cleaning and inspection will help prevent problems such as mold, mildew, staining, and fading.

Additionally, following the guidelines of composite decking manufacturers and using the cleaning products they recommend will ensure that you don’t damage your deck and get the best results. By investing time and effort into proper maintenance, homeowners can extend the life of their composite decking and keep it looking beautiful and functional for years to come.

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