This invention relates to an improved fastening technique for single ply roofing membranes comprised of thermoplastic polymer material. In one embodiment, a method of installing a roof on a structure may comprise providing a single-ply roofing membrane comprising thermoplastic polymer material, and periodically securing rigid strips over a roofing deck. In such embodiment, the rigid strips have thermoplastic polymer material on corresponding exterior surfaces thereof. The method may further include laying the roofing membrane over the roofing deck, where the rigid strips are located between the roofing deck and the roofing membrane. Then the method may include heating the roofing membrane and the rigid strips simultaneously, perhaps using a heat induction technique, such that thermoplastic polymer material on the exterior surfaces of the rigid strips fuses directly with the thermoplastic polymer material of the roofing membrane.