The Red Letter Supplies technical team can provide much of the information needed to provide detailed specification options including:
To request a u-value calculation please contact us here.
Red Letter Supplies are happy to help with any specific queries regarding thermal performance or condensation risk.
To enable us to carry out these tasks we just need to know the construction details of the building section you are proposing to insulate, layer by layer, the thickness of each layer and the target U value. The results can then be emailed to you.
To see a typical U-value calculation click here.