Mastic Waterstop

Lockstop Waterstop is a strip-applied mastic waterstop for nonmoving concrete joints. When properly installed using Lockstop Primer Adhesive, Lockstop creates a watertight seal between concrete surfaces. Lockstop does not swell or create any internal joint pressures and requires minimum concrete coverage.

Lockstop’s structural integrity conforms well to the underlying substrate and exhibits self healing properties. Unlike hydrophilic waterstop products, Lockstop will not expand when subjected to moisture and can be installed in nearly all weather conditions and temperatures.