Hydrotite KT is a composite strip of blue hydrophilic (water absorbing) and black non-hydrophilic rubber.
On contact with water, the hydrophilic rubber expands to seal gaps and prevent further water ingress in precast and cast-in-situ joints. The ark blue hydrophilic rubber turns light blue as it absorbs water, giving a clear visual indicator of any premature expansion.
Hydrotite KT has a central void that absorbs pressure in the initial stages of expansion to reduce the risk of concrete cracking.
A delay action coating prevents immediate expansion on contact with rain and moisture during transport, storage and installation. It also stops Hydrotite KT absorbing water from freshly poured concrete.
Hydrotite KT is chemically inert and has passed the WRC Tests of Effect on Water Quality (BS6920), making it suitable for use in potable water applications. It is resistant to mineral and vegetable oils, petrol and many other chemicals.
Hydrotite KT has a wide range of applications in residential and light commercial building projects where hydrostatic pressures up to 0.1 MPa (10 metre head of water) dictate the use of a standard performance waterstop.
