Application of 2 (3) coats with minimum total approximate thickness of 0,5 (0,8) mm of two-component, 100% solid content, polyurethane waterproof coating approved under regulation 31 of the Water Supply (Water Quality) regulations 2000 for use in contact with potable water, MasterSeal M 808 from Master Builders Solutions (or similar / analogous). The membrane will be applied on suitable primer according producer's instructions.
Physical properties of the product:
Water vapour permeability (EN ISO 7783-1,2): Sd ≤ 7 m (0,5 mm thickness)
CO2 permeability (EN 1062 – 6): Sd ≥ 50 m (0,5 mm thickness)
Capillary water absorption (EN 1062-3): w ≤ 0,01 kg/m2 h0.5
Crack bridging (static EN 1062 – 7 (A)): ≥ A4 (23ºC); ≥ A3 (-10ºC); ≥ A2 (-20ºC)
Crack bridging (dynamic EN 1062 - 7 (B)): ≥ B2 (20ºC, -20ºC)
Adhesion to concrete (EN 1542): ≥ 3,0 N/mm2
Adhesion to concrete after freeze-thaw cycling (EN 13687-1): ≥ 2,5 N/mm2
Impact resistance (EN ISO 6272): ≥ 20 Nm
Abrasion resistance (EN ISO 5470-1): ≤ 350 mg