High Performance Hydrophilic Butyl Bentonite Waterstop

  • Simple Installation Installation of PVC waterstop is labour intensive and requires split-forming, edge -ties and site welding of butt joints. HYDROTITE HP is secured to the concrete surface with a primer. It is extremely easy to handle thus saving installation time and cost.
  • Active Mechanism Traditional PVC waterstops work on a passive ‘tortuous-path principle’ where water travels slowly around the waterstops. HYDROTITE HP is an ACTIVE waterstop. It swells in the direction of water and seals the voids and cracks through which water seeps. Its’ slow expansion rate prevents damage to freshly placed concrete during curing.
  • Flexible Inflexible PVC waterstops require complicated detailing and a large variety of junction pieces. These processes are not required when using HYDROTITE HP. HYDROTITE HP is very flexible and is highly suited for corners and pipe penetrations. There will be no displacement or compacting problems in concrete.
  • Withstand High Pressure HYDROTITE HP is designed to withstand 60m head of hydrostatic pressure and because of its rubbery properties it will bond to both concrete surfaces in between yet creates a rubber seal for water tightness.

HYDROTITE HP is made of high performance hydrophilic rubber strips. The swelling action is the resultant between water and active bentonite based hydrophilic groups, which are part of the HYDROTITE HP molecular structure. Expansion of the waterstop creates a positive seal against the face of the concrete joint and prevents water entry into the structure through the protected joint.

Physical and Technical Data

Density1.35 – 1.40 kg/m3
Service Temperature-30 °C to 80 °C
Flash Point>150°C (ASTM D 93)
Expansion Volume RateUp to 250% (ASTM D 471)
Heat Ageing 70 °C, 24HNo changes observed
Sizes Available25 mm x 19 mm x 5 m (One Roll) Each carton contains 6 rolls
Hydrotite HP