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Estop Rubber Waterstops

Waterstop For High Movement Joints

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The Estop Rubber Waterstop is an integral sealing system for high movement joints in water retaining and water excluding structures.

It is suitable for joints and structures subject to high water pressure, subsidence and seismic movements.


The Estop Rubber Waterstop is suitable for structures where the joints are subjected to high water pressure or pronounce repeated movements.

  • Dams, culverts, canals, spillways
  • Water towers, reservoirs
  • Sewage tanks
  • Tunnels and subways
  • Basement substructures


  • High elasticity accommodates pronounced cyclic movement
  • High elongation to cater for subsidence and seismic movement
  • Withstands high water pressures

Physical Properties

Tensile Strength > 11 N/mm² @ 25°C
Elongation at Break > 300 % @ 25°C
Shore ‘A’ Hardness 65 ± 5
Form Elastic solid sections
Colour Black
Section Profile Plain Web Dumbbell & Centre Bulb


Waterstop selection

Dumbbell and Centre Bulb Estop Rubber Waterstop are centrally placed type of sealing system. Estop Rubber Waterstopis particularly suited to high movement joints and joints in structures liable to subsidence.

Plain Web: Suitable for construction joints, contraction joints and joints where no shear movement is possible.

Centre Bulb: Suitable for expansion joints and joints with high movement.


Estop Rubber Waterstop is to be installed securely held in their correct position whilst the concrete is placed. The concrete must be fully and properly compacted around the Estop Rubber Waterstop to ensure that no voids or porous areas remain.

No holes are to be made through any waterstop.

Estop Rubber Waterstop can be jointed with Hot or Cold Vulcanizing Method.

Packing & size

Plain Web Dumbbell 150mm x 15m roll
230mm x 15m roll
Centre Bulb 150mm x 15m roll
230mm x 15m roll
305mm x 15m roll
500mm x 15m roll

Technical Support

Estop offers a technical support package to specifiers, end-users and contractors, as well as on site technical assistance.


Estop Rubber Waterstop should be store under covered condition. The product has a shelf life of thirty-six months.

Additional Information

Estop manufactures and offers a wide range of complementary products, which includes waterstops, waterproofing products, grouts, anchors, specialized flooring products. In addition, a wide range of products formulated for repair and refurbishment of spalled concrete are available.