A single ply roof installation and method of making and using the same is disclosed. Flexible material securing units are provided for attaching to the underside of the membrane sheets. These securing units have a varying thickness across the surface area and are disposed in the field of the roof so...http://www.google.es/patents/US4860514?utm_source=gb-gplus-sharePatente US4860514 - Single ply roof membrane securing system and method of making and using same
Single ply roof membrane securing system and method of making and using same
