Efficiency EVA Tunnel Waterproof Board Roll

Product Overview: EVA Tunnel Waterproof Board Roll The EVA Tunnel Waterproof Board Roll is a flexible polymer anti-seepage membrane specially designed for underground tunnel 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 EVA membrane features excellent low-temperature flexibility and high elongation rate, which can follow foundation deformation without cracking or breaking. It delivers ultra-low water permeability to block underground water penetration permanently. When laid together with Drainage Board, it forms a matched system to drain residual seepage and release hydrostatic pressure on the membrane. Paired with Bentonite GCL, it creates dual anti-seepage barriers to strengthen overall waterproof performance. At tunnel entrance slopes covered with Erosion Control Mat, it gets effective protection against gravel abrasion an…

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