Description:

Preprufe waterproof membranes are composite sheets comprising a robust HPDE backing, a pressure sensitive adhesive and a trafficable weather resistant coating. Uniquely, the membrane develops a continuous adhesive bond to concrete poured against it. This prevents water migration between the structure and the membrane, substantially reducing the risk of leaks.

Uses:

• Water and vapour proofing all basement grades to BS 8102:2009
• Waterproofing civil engineering sub – structures
• Gas resistance – contributes to methane, carbon dioxide and radon gas protection according to BS 8485 (see section 7.2.4), BRE Reports 211 (radon) and 212 (methane and carbon dioxide). 
• Independent test reports available upon request.

Advantages:

• Versatile – can be used beneath foundation slabs and with single sided formwork systems
• Seals adhesively to concrete – a leading technology proven to resist water migration.
• Lightweight, flexible – easy to handle and install without special corner pieces
• No butt joints – all joints have bonded ‘selvedge’ or Preprufe Tape overlaps for increased ® leak protection
• Inert – unaffected by groundwater contaminants, ponded water or wet/dry cycling
• Remains sealed to structure – even if ground settles
• Smooth surface membrane – site contamination easily removed
• Excellent chemical resistance – protects structure from salts and sulphate attack
• Total system – Full range of GCP hydrophilic and PVC waterstops available for concrete joint protection