As the name suggests, Single-Ply membrane refers to a roofing system with only one ply. And while the material is only one layer, it offers excellent durability, longevity and energy improvements that certainly make it a worthwhile investment. The membrane can be added on any type of existing roofing in a variety of ways such as mechanical fasteners or adhesive. The roofing membranes' manufacturers that we use offer a 10 year warranty. However, these membranes have proved to last beyond the manufacturer's’ warranty periods and we recommend them with great confidence for their performance to keep our customers happy. We are also certified in Green Roofs and Green Planters installations.