If you’re considering composite decking for your outdoor space, one common concern is whether it gets too hot in the sun. After all, nobody wants a deck that’s uncomfortable to walk on during summer!
Let’s explore whether composite decking heats up, what affects its temperature, and how you can keep your deck cool.
Does Composite Decking Get Hot in the Sun?
Yes, composite decking can get hot when exposed to direct sunlight, just like wood, stone, or other outdoor materials. However, some composite boards retain more heat than others, depending on their material composition, colour, and surface texture.
Unlike traditional wood, composite decking contains plastic elements, which can absorb and hold heat for longer. This is especially noticeable on hot summer days with little shade. The key is to choose quality materials from reputable brands. Click on the link to learn about factors affecting longevity so you can spend your money wisely.
What Factors Affect Composite Decking Temperature?
Several factors influence how hot composite decking gets:
Colour Choice – Darker colours absorb more heat, while lighter shades reflect it. A dark grey or black deck will be much warmer than a beige or light brown one.
Material Composition – Some composite boards use heat-resistant technology, while others contain more plastic, which can hold heat.
Capped vs. Uncapped Boards – Capped composite decking (which has a protective shell) can be slightly cooler than uncapped versions, as the cap layer often includes UV-resistant properties.
Decking Surface Texture – Smoother boards tend to feel hotter than textured or grooved surfaces, which allow more airflow and reduce heat retention.
Direct Sunlight vs. Shade – If your deck is in full sun all day, it will naturally be hotter than a partially shaded area.
Airflow – Elevated decks with open airflow underneath tend to stay cooler than decks built directly on the ground.
How Hot Does Composite Decking Get Compared to Other Materials?
On an extremely hot day, composite decking can reach temperatures similar to:
Wood decking – Can get hot but generally cools down faster than composite.
Stone or tile patios – Often hotter than composite due to their dense material absorbing more heat.
PVC decking – Some pure plastic decks get even hotter than composite.
Artificial turf – Can reach very high temperatures in direct sun, hotter than composite decking.
While composite decking can warm up, modern advancements in heat-resistant technology have made certain brands cooler underfoot than traditional composite materials.
How to Keep Composite Decking Cool
If you’re worried about heat, here are some practical ways to keep your composite decking comfortable:
Choose a Lighter Colour – Opt for shades like tan, beige, light grey, or soft brown to reflect heat instead of absorbing it.
Avoid Solid PVC Decking – Some all-plastic decking can be hotter than composite options with wood fibres.
Create Shade – Add pergolas, umbrellas, or shade sails to block direct sunlight and reduce heat buildup.
Improve Air Circulation – If possible, build the deck slightly elevated to allow airflow underneath, helping cool the surface.
Cool It Down with Water – Spraying the deck with a hose can quickly lower the temperature on very hot days.
Use Outdoor Rugs or Mats – Placing outdoor-friendly rugs in high-traffic areas can help reduce heat absorption and provide a cooler surface to walk on.
Wear Footwear on Hot Days – On scorching summer afternoons, wearing sandals or flip-flops can prevent discomfort when walking on the deck.
Can You Use Any Outdoor Cleaner on Composite Decking?
Once you’ve got brand-new composite decking, you want to ensure this outdoor space remains inviting, stylish and new. Indeed, every spring, you’re going to have to clean up the decking area, which is going to allow you to have fun outside during the better weather. Thankfully, composite decking isn’t difficult to clean. But, most homeowners want to ensure they’re using the right product for this task.
So, can you use any outdoor cleaner on composite decking? The answer is no. If you’re using strong chemicals on this type of material, it can lead to damage. This could include weakening the material or discolouration. It can also break down the waterproof or algae-resistant coating that it has, which isn’t going to help you in the long run.
Therefore, it’s crucial that you use a specialised cleaner on composite decking. This should specify that it’s safe for composite. If you’re worried, it’s best to buy the cleaner straight from the decking company. They’re going to have tried and tested products. Alternatively, you could try using a mild soap and water. This can help to remove surface dirt and debris. Just ensure that you use a soft-bristle brush for this action and avoid being too rough with the composite. You don’t want to cause scratches to the surface.
Final Thoughts: Is Heat a Dealbreaker?
While composite decking can get warm in the sun, so do many other outdoor surfaces. With the right colour choice, shade solutions, and airflow considerations, you can keep your deck comfortable even in hot weather.
If you’re planning a deck in a sun-exposed area, opting for lighter-coloured, heat-resistant composite boards will make a big difference.
Hi there! I am Emily Evert, the owner of Emily Reviews. I am 28 and live in a small town in Michigan with my boyfriend Ryan and our two pugs. I have a large family and I adore my nieces and nephews. I love reading memoirs, and learning about child development and psychology. I love watching The Game of Thrones, Teen Mom, Sister Wives and Veep. I like listening to Jason Isbell, John Prine, and other alt-country or Americana music. I created Emily Reviews as a creative outlet to share my life and the products that I love with others.
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