Using composite decking as a building material for your outdoor space can give you more satisfying results. Composite decking is a blend of wood fibers, recycled plastic, and adhesives, making it more slip-resistant than other traditional materials. However, in some cases, it can still be very slippery. In this article, we will discuss when composite decking becomes slippery and how you make composite decks less slippery.

Why composite decks become slippery

The unique construction of composite decking makes it very slip resistant. However, it can still become very slippery in some special situations. Knowing this can make your use safer.


Water accumulation is one of the most common causes of composite decking becoming slippery. Not only composite materials but almost any material can be affected by moisture. If there is water on the surface of the deck, it will become very slippery. It is well known that moisture reduces friction, which causes less resistance on the deck surface. And this is a major cause of composite deck slippage.

There are many reasons why water can accumulate; washing, rainfall, and daily use can all create water. Due to the outer protective layer of composite decking, it is highly water resistant, but this does not mean that it is completely waterproof. Its construction can cause standing water to remain for long periods of time, rather than absorbing water as traditional wood does.

Mold and mildew

One of the important advantages of composite decking is its resistance to mold and mildew. It is difficult for mold and algae to grow naturally on the surface of the deck. However, in the right environment and temperature, mold can still appear. The plastic composition of the composite deck makes it very difficult for mold and dirt to affect it, which is why it requires less maintenance.

However, in some areas of standing water and in debris and leaves, it can become an ideal environment for mold and algae to grow. Although the effect of mold on composite decking is very low, it can make your deck more slippery.


Since composite decking is mainly used for outdoor construction. So some debris and leaves will accumulate on the surface of your deck as you use it. This promotes the growth of mold and algae and makes your deck less slippery due to reduced friction.

How do you make the composite deck less slippery

Slippery composite decking poses a serious safety risk to your use and can be hazardous to you and your family. So it is very important to address this issue. In the next section, we will introduce some ways to make your deck less slippery.

Install non-slip panels

Installing non-skid plates or strips is an effective way to improve the friction of your deck. Skid plates can easily attach to the surface of your deck and can provide extra traction and friction. Even in wet weather, it is a good way to ensure that the deck is not very slippery. And with a wide range of colors and looks to choose from, you can nicely choose some matching looks and colors to match your composite deck boards.

Clean the deck regularly

Keeping your outdoor deck clean will also help you prevent slips and falls. Dirt and debris can make your deck surface more slippery, especially when it’s wet. Deck surfaces can be easily treated with a deck brush, garden hose, and cleaner, which can help prevent dirt and grime buildup and make your deck safer to walk on.

Use non-slip coatings

Applying a non-slip coating to the surface of composite decking is also a very effective way. These coatings are very easy to apply and will provide long-term anti-slip protection for your deck. They come in a variety of colors and finishes, so you can choose a solution that complements your deck design. It is important to note that you should always choose a non-slip coating designed for composite materials before purchasing.

Purchase a more slip-resistant deck

If you are planning to upgrade your outdoor space or build a new deck, choose a more slip-resistant composite decking. some manufacturers have products specifically designed for slip resistance, with a more slip-resistant textured surface and material options. They can provide more friction to your outdoor space, making it safer to use and live on.

Add a non-slip blanket

Adding a non-slip carpet to your outdoor space can also help make your deck more slip resistant. This approach is very convenient as it does not require permanent changes to the deck. Be sure to choose a non-slip carpet that won’t collect water, otherwise, you may get a build-up of mold and mildew on the bottom of the carpet. Plus you can always remove the rug to enjoy the original composite decking.


As the perfect alternative to traditional materials, composite decks offer many advantages. Greater durability, maintenance free and slip resistance make it a more popular choice. Although the decking may become slippery in some special cases. But taking measures such as using non-slip coatings, regular cleaning, and adding non-slip carpeting can effectively solve this problem. Always make safety a priority when using your outdoor space and take steps to ensure your deck is slip resistant.


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