Dual Seal Bentonite Waterstop

Dual Seal Waterstop is a bentonite / HDPE based waterstop which reacts in contact with water by swelling to form a watertight seal in concrete structures. It can be installed directly onto scabbled surfaces and will swell into honeycombing of concrete or voids up to 12mm deep. Dual Seal Waterstop requires a minimum of only 25mm cover so can be place beyond the outer layer of rebar to protect this layer, rather than be placed in the centre of the construction joint in the traditional manner. Changes of direction and end joints are simply achieved by butting together, no welding or adhesives are required.

Dual Seal Waterstop has been independently tested up to 30 metre head of water, and has full WRC approval for use with potable water. Dual Seal Waterstop can be applied to green concrete and in damp conditions.

Profile size 25mm x 7mm. Roll size 8m.