Does Composite Decking Get Hot?

During your research on composite decking, one of the most common questions asked:

Does composite decking get too hot? Or how hot can composite decking get?

With the rise of composite decking popularity, due to the ultra-low maintenance lifestyle and now natural authentic wood looks with no staining and colour changes, this is something to consider if your decking area is going to be in direct sunlight.


Like most surfaces including composite decking if constantly exposed to direct sunlight it will get hot.

The same can be said for any outdoor building products or material after a long day in the direct sunlight.

Ultra-Decking is consistently improving our composite decking solutions and use the latest manufacturing techniques to reduce the heat build-up on our products.


The biggest factor for any outdoor product heating up and getting hot is the colour and the density of the product, which plays a difference in the overall temperature when exposed to consistent direct sunlight.

The lighter the colour and the lower the density the lower the temperature.

If heat is a concern and your decking is going to be in direct sunlight the coolest boards will be a light colour with hollow core profile (square or circle), the lighter the board in weight, mass and colour the less it retains its heat, less mass and weight to heat up the cooler the board will be.

3 Country

The heat build-up is a more frequently asked question in countries with hot temperature, as we sell our boards around the world and often experience this question in America, Singapore, Spain and Australia.

4Research and Feedback

Ultra-Decking can confirm that the differences between wood and composite decking are minor. For example, Cedar can heat up to 157 degrees in direct sunlight. Ultra-Decking capped Co-Extrusion decking boards can heat up to 140 degrees when exposed to direct sunlight.

As a guide tests were performed in direct sunlight averaging 86 degrees all day heat. All decking solutions heated up to over 100 degrees. Wood decking solutions such as Ipe reached 137 degrees, Pine was between 119-138 degrees with some tropical woods heating up to between 135-149 and capped co-extrusion solid boards ranged from 135-149 degrees.

Ask Us How

If you are concerned about heat build-up and need additional help, please feel free to make contact for advice and guidance even if you’re not purchasing from ourselves. If not, our advice would be to opt for a lighter colour board like our Signature Teak or the Teak boards from our new Exclusive range.

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Quick Summary

Most materials including wood and composite woods will heat up in direct sunlight, although different wood solutions are cooler than others. The test reports in some of the hottest countries in the world support and confirms the difference isn’t huge between wood and composite wood. Our expert advice would be to use a light colour decking board with a hollow core profile. This will help dissipate the heat and provide as close to the same heat as wood. Like any surface, please do wear footwear when the weather is hot.

Free Samples

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