Earth Shield® TPV (thermoplastic vulcanizate) (aka TPE-R) Waterstop is the world's leading chemical-resistant waterstop, with renowned physical properties and broad-spectrum resistance to hazmat, deleterious fluids, and concentrated ozone. NSF 61 certified and GreenSpec listed. Earth Shield® Thermoplastic Vulcanizate Waterstop (TPV) (aka TPE-R), by J P Specialties, dramatically expands the scope of conventional waterstop by offering unmatched chemical resistance to a broad spectrum of aggressive chemicals, solvents, and hot petroleum oils. EPA-compliant waterstop profiles are available for new construction and retrofit, and the necessary tools and accessories for proper installation.

Waterstop Tortuous Fluid Flow Path

You can quantify the effectiveness of a waterstop by calculating its fluid flow path. The fluid flow path is measured from the waterstop hydraulic side to the dry side. Ribbed waterstop profiles are much more effective than the traditional dumbbell varieties. The series of fins (or ribs) substantially exaggerates the fluid flow path from the hydraulic side to the dry side compared to the older standard dumbbell profiles (see the illustration below).