If you install aluminium decking in both an arctic tundra and a tropical paradise, you will experience different overall temperatures, and the maximum temperature the boards will achieve will naturally be different.
The properties of the material, such as specific heat capacity and thermal conductivity, contribute directly to its reaction to heat energy. The profile and the colour will also make an impact on how the board will react.
It is always good to compare the performance of a material in relation to another one. Let’s take the properties of Aluminium 6063-T6, often used in decking boards and compare it to Oak, which is a popular type of wood for decking in the UK.
The
table on this page shows that it takes a lot less energy to heat aluminium than it does Oak, but it takes a lot more energy to cool Oak as opposed to aluminium. As aluminium has high thermal conductivity, heat is spread around the material more easily and across all areas, allowing more opportunities to cool the material. Oak has a much lower thermal conductivity, meaning that heat energy will be concentrated longer in the same spot.