WATERGUARD MEMBRANE APP G is a high quality polymer-rich APP modified bituminous torch-on membrane of 4mm thickness consisting center core of 90 micron thick high molecular high density polyethylene film. It has a reinforcement of tough glass fiber used as a first layer in multi-layer roof waterproofing systems. The WATERGUARD range belongs to the plastoproof group of membranes produced using a special grade of bitumen modified with virgin APP polymer. The polymer-rich mixture is used to saturate and coat both sides of the glass fiber mat to the required thickness of the membranes.