HDPE layer plus pressure sensitive adhesive layer covered by a weather-proof protective layer. Adhesive is activated when concrete is poured; forms an integral seal that prevents lateral water migration and is unaffected by substrate settlement. Reinforcement can be laid directly on the membrane without screed protection.

Key features

• Hot welded joints for zero leakage
• Excellent adhesion with concrete
• Fast and easy application
• Large roll widths, fewer joints
• UV exposure up to 45 days
• Resistant to high hydrostatic ground water pressure
• Resistant to acid, alkali, chlorides and sulphates
• Tested for 25 years durability

Applications

• Basements
• Subway and UG metro stations
• Caverns
• Other underground civil structures

Specifications

Colour: White / Off White | Tensile strength (bare HDPE) 1.5 mm / 1.8 mm: 25 / 28 N/mm² | Elongation (bare HDPE): 500% | Puncture resistance 1.5 mm / 1.8 mm: 1000 N / 1500 N | Low temperature flexibility: Pass at -25 °C | Resistance to hydrostatic head: 70 m | Peel adhesion to concrete: 1500 N/m | Lap joint strength in shear: 15000 N/m | Water vapour transmission: 0.05 g/m²/day (0.03 perms) | Water absorption: <0.5% | UV resistance: 45 days pass | Dimensional stability: 0.1% | Shelf life: 12 months | Application ambient temperature: -4 °C or above (as printed '–40C')

Standards: IS 16471:2017 | BS 8102:2022 Type A protection

Packing: 20 m x 2.4 m and 20 m x 2.0 m rolls at 1.5 mm and 1.8 mm composite thickness