Single-Ply  Single-ply systems we offer are a PVC system. 1.2, 1.5 and 1.8mm thick. They are strong flexible sheets of single layer waterproofing that can either be mechanically fixed with the joints hot air welded or fully bonded with contact adhesive. The advantages are: • Quick Instalation • Simple detailing • Flame-free construction • Overlay existing roof membranes • Long term performance Contact us for more information.