That fused interface develops shear capacity of approximately 1.0–1.5 MPa and closes the gap that defeats conventional loose-laid pre-applied systems. The sheet stays impermeable for 120 minutes at 0.6 MPa, resists water movement between layers at 0.8 MPa across a 35 mm gradient, and limits heat slippage to 2 mm or less at 80°C. There is no torching and no site adhesive, on vertical or horizontal surfaces. Use it for basements, retaining and foundation walls, raft slabs, lift pits, tunnels and podium slabs. Values are typical R&D data; designed to comply with AS/NZS 4858 and AS 4654.1, with verification testing scheduled. Non-exposed use only, on substrates with minimal negative pressure.