Proofex Torchseal 3PI (Standard) are quality torch applied APP based plain membranes manufactured from premium grade heavily modifi ed bitumen, reinforced with a core of non-woven polyester fabric. The core gives the membrane its excellent mechanical properties, allows for good elongation and aff ords high resistance to piercing. Proofex Torchseal 3PI (Standard) membranes are ideal for use in a wide range of waterproofing applications such as shallow foundations, basements, tunnels, roofs, carpark decks and other civil works. The chemical resistance of Proofex Torchseal 3PI (Standard) makes it particularly suitable for tanking applications in areas where aggresive ground water conditions prevail.