Whether you need information on the new part l u-values, an update on how psi-value calculations are changing, or a u-value calculator for your project, we’ve got you covered.
Here you’ll find Q&As on the Part L U-value requirements, as well as advice on how to meet them using products from our DriTherm® Cavity Slab and Supafil® ranges. You can also use our free Psi-value calculator and U-value calculator.