Does aluminium decking get hot?
One of the other questions we come across is whether aluminium decking will get too hot in the summer and become unusable. In reality, this doesn’t happen. Compared to other common decking materials, aluminium has a high specific heat capacity, meaning it takes less energy to warm it up.
Aluminium is also a more efficient thermal conductor than other materials, so heat is distributed across the entire surface more easily and, as a result, it will cool faster. If you factor in design features like a ridged "heat sink" surface, aluminium becomes an excellent decking material.
The colour of the finish also affects temperature: lighter colours reflect more heat, and darker hues absorb more. Naturally, the latter will feel warmer to the touch than the former. It goes without saying that on a sunny day, south-facing aluminium decking will feel warmer than any north-facing terraces and balconies.
Here's some more reading on the thermal performance of Aluminium Decking.