... )Impermeable 2)Foldability at low tempreture without crack Breathable waterproof membrane1).Excellent Performance at water resistance2).Light and thin, ... for roof construction, subway, bridges, channel tunnel, planted roof, waterproof and drainage system, pools, dam, irrigation system, light steel ... °C, No CrackImpermeability(0.3MPa*2h) ImpermeableAnti-punchImpermeable Breathable waterproof membrane