The main benefits I have heard from our customers about composite decking are its durability and low maintenance needs. With that, composite decking is made of materials that create a slip-resistant surface. But that doesn’t mean slips and falls can’t happen.
As with any area of your home and yard, it’s important to ensure everyone’s safety and security. With proper care and attention, your family and guests can enjoy your outdoor living space and only have their feet out from under them when propped up on furniture.
Composition of Composite Decking
Composite decking materials like Trex® are made from wood fibers and recycled plastics. This means composite decking, unlike wood decking, is resistant to rotting, warping, mildewing, splintering, and fading. Over time, composite decks are more durable and longer lasting in extreme weather and withstand wear and tear better, making composite decks a top choice for today’s homeowners.
But that doesn’t mean it’s completely resistant to slippery conditions. However, composite decking does have features that make it more non-slip than real, natural wood decking.
Factors Influencing Slip Resistance
The variety of composite boards available for purchase and their anti-slip properties often depend on their quality, type, and age. Early-generation composite deck boards don’t have as many slip-resistant qualities as newer-generation boards.
Features of composite decking that make it more non-slip are:
- Textured surfaces
- Patterned boards
- Boards with grains and grooves
- Anti-slip coatings and cladding
With these features, a composite deck surface has more traction and creates more friction, allowing for more secure footfalls and less slippery boards.
Deck installation is another way that minimizes the potential of a slippery surface. Proper installation and deck drainage systems reduce water from collecting or pooling on the surface.
Is Trex Decking Slippery?
Trex composite decking is engineered to provide reliable traction in both dry and wet conditions, and it meets or exceeds the slip-resistance requirements established for residential outdoor surfaces. While no decking material is completely slip-proof, Trex boards are designed with textured, wood-grain embossing and a high-performance protective shell that help improve grip and reduce slickness. In my experience, that surface texture makes a noticeable difference underfoot, especially after rain or morning dew.
Like any outdoor surface, Trex can become slippery when water, pollen, algae, or organic debris build up. Regular cleaning helps maintain safe footing, and Trex’s low-maintenance, capped design makes cleaning easy because the shell resists moisture absorption and releases dirt and debris with simple soap-and-water rinsing. Trex does not absorb moisture the way timber does, so it’s not prone to long-term slickness caused by rot or swelling, either. With its design and routine cleaning, Trex decking provides a stable, dependable walking surface year-round.
Trex vs Other Decking Materials
Check out the table below to see how the various Trex composite decking lines compare in terms of slip-resistance and surface texture.
Trex Decking vs. Other Composite or Wood Decks
| Deck Type | Slip Resistance | Surface Features | Maintenance |
| Trex Signature® | High | Premium embossed grain; ultra-durable cap for elevated traction and weather resistance | Very low; simple soap-and-water cleaning maintains clear, slip-resistant surface |
| Trex Transcend® | High | Deep, refined grain embossing; high-performance protective shell | Low; routine cleaning prevents pollen, algae, and debris buildup |
| Trex Select® | Moderate–High | Subtle grain pattern; smooth protective cap | Low; occasional cleaning maintains safe footing |
| Trex Enhance® | Moderate–High (Naturals); Moderate (Basics) | Embossed grain patterns; moisture-resistant, budget-friendly caps | Low; periodic cleaning reduces debris accumulation that can affect traction |
| Other Premium Capped Composite | Moderate–High | Multi-layer caps; traction varies by manufacturer | Moderate; regular cleaning required, especially in shaded/damp areas |
| Uncapped Composite | Low–Moderate | Smoother surface; more prone to mold, mildew, and slickness | High; frequent washing required to control algae and mildew buildup |
| Wood Decking | Low–High | Slip performance varies by species: pine and cedar weather and become slick faster; hardwoods offer better natural traction | High; needs regular cleaning, plus sealing or oiling to prevent algae, moisture absorption, and long-term slickness |
How to Keep Your Composite Decks Non-Slippery
While composite decking is slip-resistant, I recommend you still take these four steps to decrease the potential of a slippery surface.
- Regular cleaning. If left unattended, mold, mildew, and algae can form on and around the dirt, debris, and leaves covering your composite deck. By keeping your surface clean and free of buildup and debris, the deck surface is less likely to become slippery. A simple soft-bristle broom or leaf blower will do the trick in removing most of what falls and collects on a deck. But we also recommend a more thorough cleaning twice yearly – once in the spring and once in the fall. For this, you will use a store-bought or homemade composite deck cleaning solution.
- Removal of standing water. Puddles of water on any hard or walking surface can cause a slippery situation. Your deck is no different. Composite decking can be slippery when wet. To avoid this issue, use a soft-bristle broom or leaf blower to remove areas of standing water on your deck once the rainfall has ended. You must be careful, too, and wear slip-resistant footwear while clearing the water from your deck.
- Removal of ice and snow. For areas where winter weather conditions are a concern, you must take special precautions in removing snow and ice from your composite deck surface. Before a winter storm, pre-treat your composite decking boards with rock salt or calcium chloride “ice melt” to prevent accumulation on the deck boards.
If you miss that window of opportunity, don’t use an abrasive or metal snow shovel. This may damage your deck boards. Instead, it would help if you used a soft broom or plastic shovel to remove the ice and snow gently. You can begin by removing a top layer without touching the deck boards and then work your way down to the boards gently. If possible, leave any hard-to-remove ice and snow until it starts to melt or the temperatures warm up. This will prevent the urge to press down or scrape too hard to loosen the ice and snow.
Proper drainage. If you have an ongoing issue with water collecting on your composite deck, you may need to improve your deck’s drainage system. You can start by ensuring the gaps between the deck boards are clean and debris-free. Clean deck boards will allow water to drain more quickly and easily. If this is not causing your problem, you can have a professional deck builder assess your deck to check for any problems, see if a deck drainage system would be beneficial, or determine if you are due for a new deck.
With a little bit of care and attention, you can improve your deck’s appearance and help create an even more slip-resistant surface. With twice-yearly deep cleanings, regular removal of dirt, debris, and leaves, removal of standing water, ice, and snow, and proper drainage solutions, your composite deck should be safe and secure for years of entertaining and relaxing. That’s the main reason why customers tell us they keep choosing composite decking. It’s worry-free, low-maintenance, and can withstand what Mother Nature brings its way!
Frequently Asked Questions
Can composite decking be used safely around pools and hot tubs?
Yes. Composite decking is a popular choice for poolside and spa areas because it resists moisture, swelling, and rot far better than timber. Trex boards dry quickly and to help maintain traction, but like any surface, they should be rinsed and cleaned regularly to remove sunscreen residue, algae, or soaps that may reduce grip.
Do darker composite deck colors get more slippery than lighter colors?
Color doesn’t significantly affect slip resistance, but darker boards absorb more heat. When boards get warmer, surface water evaporates faster, which can reduce slipperiness. However, if algae or debris builds up, both dark and light boards can become slick. Choosing a board with a pronounced grain pattern can improve traction in all shades.
Can composite decking be installed in areas prone to heavy rainfall?
Absolutely. Composite decking performs exceptionally well in wet climates because it doesn’t absorb moisture the way timber does. In fact, if you want that wood look but have ongoing moisture concerns, a quality composite is my top pick every time. To support your decking and ensure it performs at its best in wet conditions, make sure the deck has the correct pitch so water moves away from the home, maintain proper board spacing, and keep the surface clear of organic buildup. It also helps to think beyond the decking surface to the deck substructure: applying a butyl-based flashing tape like Trex Protect protects joists and beams from moisture intrusion and Trex Seal provides added protection at the vulnerable ledger board.
Sources
Family Handyman. (2024, September 30). Composite decking guide: Pros, cons, and maintenance.
Trex Company. (n.d.). Trex composite decking overview.
