WATERSTOP-RX® is an expanding strip waterstop designed to stop water ingress through cast-in-place concrete construction joints. Upon contact with water, it expands to form a positive seal against the concrete. WATERSTOP-RX is designed to replace passive PVC/rubber dumbbell waterstops, thereby eliminating the requirement of special pieces, split-forming and seam welding.

WATERSTOP-RX offers a low-cost opportunity to enhance the pe formance of a sound external waterproofing system by sealing the areas experiencing the highest probability of water infiltration through the concrete, and should therefore be implemented as part of the waterproofing design.


  • Vertical and Horizontal
  • Nonmoving Concrete Construction Joints
  • New to Existing Construction
  • Irregular surfaces
  • Around Through-wall Penetrations, e.g., Plumbing and Utility Pipes
  • Around Piles, I Beams, Supports and Other Detailing Applications

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