SUPERSTOP SW is made of high performance hydrophilic rubber strips. The swelling action is the result of contact with water. Expansion of the waterstop creates a positive compression seal against the face of the concrete joint and prevents water entry into the structure through the protected joint.
SUPERSTOP SW can be applied against existing concrete and simply installed by nailing or using a hydrophilic adhesive. In contact with water, hydrophilic polymers react and swell by up to 450 – 600% of the original dimensions to form and excellent compression seal.