Underlay membranes


An underlay is an essential part of the roof construction

Special attention should be paid to the selection of the underlay, particularly with discontinuous roofing (tile, tin etc.) which are not waterproof. There are many types of underlay available and it is not immaterial which one you choose. The lightest solution to lay under a tin or tile roof is a plastic hanging underlay, whereas the sturdiest and most compact alternative is a solid wood decking and an underlaymembrane laid on top.