Underlay is used as part of torch applied roofing. The torch on underlay is designed for use beneath the top layer or capsheet and is designed to be melt-welded onto the roof ...
Underlay is used as part of torch applied roofing. The torch on underlay is designed for use beneath the top layer or capsheet and is designed to be melt-welded onto the roof surface with the rest of the torch applied roofing system.
What is torch on roofing underlay? A torch-on roofing system is designed specifically for flat roofs and contains three layers of felt (otherwise known as modified bitumen) that is then welded onto the roof surface to create a waterproof seal. Torch on underlay is one of the three layers that makes up torch applied roofing — felt, a capsheet, and a vapour control sheet. These three layers are required by roofing regulations, so the torch on underlay is a key component.
Do you torch on the underlay? Yes, the underlay is one of three components that make up the torch applied roofing system, so it is welded on using a blowtorch. Discover more about torch on roofing systems and the components, including capsheets, here at Roofstores.
