7. PERMAROOF APP PERMAROOF APP membranes are elastomeric waterproofing membranes, manufactured from a Pure mixture of bitumen and selected polymers to obtain excellent heat & amp; UV resistant and waterproofing properties. The membrane has excellent mechanical properties and is highly resistant to fatigue and is designed for use in structures exposed to high temperatures. Advantages  Excellent resistance to positive water & amp; vapor pressure.  Good heat resistance.  Good dimensional stability under tension.  Excellent flexibility. Can accommodate structural movements.  High puncture and fatigue resistance.  High tensile and tear strengths.  Resistant to water borne chemicals. Substrates: PERMAROOF APP is used as waterproofing membrane on the following structures:  Inverted Roofs & amp; parapets.  Terraces, balconies & amp; patios.  Sunken slabs.  Bridges & amp; tunnels.  Airport aprons & amp; ramp areas.