Efficiency EVA ECB Tunnel Waterproof Sheet

Product Overview: EVA ECB Tunnel Waterproof Sheet The EVA ECB Tunnel Waterproof Sheet is a flexible polymer anti-seepage membrane for underground construction. It can be combined with Bentonite GCL, Drainage Board and Erosion Control Mat to build multi-layer waterproof and drainage systems for tunnel and geotechnical projects. Core Advantages This sheet features outstanding low-temperature flexibility and high elongation, adapting to foundation deformation without cracking. It delivers ultra-low permeability to block underground water penetration permanently. When paired with Drainage Board, it forms a coordinated system to drain residual seepage and reduce water pressure on the membrane. Matched with Bentonite GCL, it forms dual anti-seepage barriers to strengthen waterproof performance. Covered by Erosion Control Mat on slope tunnel entrances, it gets protection against surface runoff abrasion and sharp gravel damage. The EVA ECB material resists acid, alkali and underground chemic…