Does Trex composite decking get hotter than pressure-treated timber decks under the sun?
On a hot day with a blazing sun, nearly any surface will get uncomfortably hot. Lighter coloured boards tend to be slightly cooler than darker composite boards. In extensive studies, it has been found that the colour of the decking board, regardless if it’s made of timber-plastic composite or timber is the most significant factor in the ‘heat retention’ of the board. In these studies, pressure-treated timber stained the same colour as Trex was actually hotter than Trex in the same test conditions.