INSULATED ROOF COVERINGS.
Our insulated roof coverings use a double layer PVC membrane, drastically improving thermal performance of a temporary structure, while using the air as a natural insulator.
We measure this performance using a metric called the U-value, measured in W/m²K. This refers to the thermal transmittance of a material, calculated using the rate of transfer of heat through a structure (which can be a single material or a composite), divided by the difference in temperature across that structure. The better insulated a structure is, the lower the U-value will be.
Single skin PVC structures normally have a U-value of around 4.92, compared to just 2.33 using double layer roof covering, and can be further reduced to 1.44 when a triple layer is used. Along-side improved thermal performance, a lower U-value results in lower running costs and quieter structures.