TPO-TBP Self-Adhesive Pre-laid Waterproof Sheet

Underground subway tunnels, municipal pipe galleries and basement structures worldwide suffer serious hidden troubles: water channeling, cold embrittlement and long-term aging caused by drastic temperature swings. Our TPO-TBP self-adhesive pre-laid sheet ranks among premium durable membranes, an innovative Waterproof Membrane made of thermoplastic polyolefin substrate, reactive polymer adhesive and sand anti-stick layer. Unlike aging-prone asphalt geomembrane, it forms integrated chemical bonding with fresh concrete to completely block leakage channels for permanent underground anti-seepage. This industrial geomembrane meets GB/T23457-2017 with stable mechanical indicators: tensile strength ≥16MPa and elongation up to 400%. As reliable durable membranes, it remains crack-free at -35℃ and withstands extreme temperatures from -40℃ to 120℃, suitable for both tropical and frigid construction projects. High puncture resistance avoids damage from foundation gravel, and hot-air weldable laps…