Rubber Waterstop

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Rubber Waterstop System


We offer a wide range of rubber waterstops designed to be easily integrated into joints in concrete, providing a seal, to prevent the migration of water through the joint.

Designed to withstand long term movement, our Rubber Waterstop are ideal for joints in bridges, water retaining and excluding structures and are manufactured to international standards.

Rubber Waterstop are available in 150mm, 230mm, 305mm and 500mm widths and can be manufactured from natural, neoprene or hypalon rubber to suit your specifications.

A range of factory made and quality-controlled intersections can also be provided and they can be factory vulcanized to straight lengths eliminating some of the on-site vulcanizing. Hot and cold vulcanizing kits are available for on-site joining requirements.

We can provide training to your labour so vulcanizing can be performed without failures (the main cause of waterstop joint leakage). Please refer to our hot vulcanizing and cold bonding procedure instructions.


  • High degree of elasticity to accommodate cyclic thermal movements
  • High elongation to cater for subsidence and seismic movement
  • Withstands high water pressure
  • Hot vulcanised site joins


Areas of Application

Water retaining structures:

  • Sewage treatment plants
  • Water treatment plants
  • Swimming pools
  • Reservoirs
  • Dams and spillways
  • Water tank
  • Diversion tunnels

Water excluding structures:

  • Basement areas
  • Underground car parks
  • Tunnels
  • Retaining walls
  • Suspended slabs
  • Pits
  • Roof slabs

Note : The products design and performance, its intended use, installation and final confirmation and approval for use, must be provided by the project’s Design Engineer and Project Manager.


Site Joining

Hot Vulcanising Joining Procedures

  1. Pre-heat the hot vulcaniser unit for approximately 30 – 45 minutes prior to placement of the Rubber Waterstop joins into it. The hot vulcaniser must be set at a temperature between 140 – 150°C to successfully cure the rubber compounded joint.
  2. Cut each end of the Rubber Waterstop that are to be joined, square and straight.
  3. Wire brush up to 2” wide all around the Rubber Waterstop and on the ends to roughen the surface.
  4. Clean the Rubber Waterstop surface with solvent cleaner using a paint brush. Apply liberally up to 2” around the Rubber Waterstop and on the ends. Allow drying before the next step.
  5. Liberally apply 1 (one) coat of Rubber Adhesive by brush up to 2” wide all around the waterstop and on the ends. Wait for adhesive to go tacky before the next step.
  6. Cut the rubber cover/compound with scissors into 2 pieces 1” wide and in length by the wide of the Rubber Waterstop. Place these pieces on each end on the rubber waterstop and press firmly into position. Now cut small pieces of compound that are similar sizes to the diameter of the outside
    dumbbell section of the waterstop and firmly press them into position on each of the rubber waterstop profile. If there is a centre bulb section to the rubber waterstop, then also cut a piece for each side and fit into position. Once this has been complete, firmly press the 2 pieces of rubber waterstop together at their ends.
  7. Now cut 1” wide section of rubber compound long enough so it can wrap around the Rubber Waterstop. This section must be centrally placed over the join and wrap fully around the rubber waterstop. The rubber waterstop join is now ready to be placed into the hot vulcaniser.
  8. Once the correct temperature has been achieved, then the join placed into position and the lid of the hot vulcaniser is clamped over the top of the Rubber Waterstop for approximately 30 – 40 minutes.
  9. Once the 30 – 40 minutes time frame has been achieved, unclamp the Rubber Waterstop and remove it from the hot vulcaniser. Allow the rubber waterstop to cool for about 20 minutes before any excessive movement is places on the join.


Cold Bonding Joining Procedures

Rubber Waterstop can be bonded using our special Adhesive Kits but it is only recommended for construction joint applications




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