Gripset BRW Swell Seal

Hydrophillic Swellable Waterstop

Gripset BRW Swell Seal is Hydrophilic Butyl Rubber Waterstop that swells to form a water-tight compression seal. Designed for static or low movement construction joints, cold joints and penetrations. 


● Concrete foundations and walls
● Concrete slabs, including elevated ramps
● Lift pits
● Precast construction
● Pools, tanks, water containing structures.
● Tunnels, pipes and underground vaults
● Marine environments
● General shotcrete and pile applications


Can be installed directly onto the concrete surface or to a formed channel in the concrete.

Optimum results achieved applying Swell Seal onto even smooth surfaces. Undulating surfaces may slow the application. 

Ensure a 50mm cover from the edge of the concrete to the face of the Swell Seal to prevent any concrete blow-outs.

Swell Seal should be positioned between two rows of reinforcing steel to assist to support optimum product placement. 

● Joint surfaces to be free of loose dirt,  dust and debris.
● Place Swell Seal in position, and remove release backing from the adhesive side in small sections.
● Apply moderate hand  pressure to press a continuous roll of Swell Seal   firmly onto the surface.
● Ends are to be butt-joined or kneaded together to form a continuous water tight seal.
● Check adhesion of the Swell Seal strip is correctly and fully  adhered to surfaces.
● Gripset 11Y can be applied as a surface adhesion enhancer on surfaces where bonding may be compromised.  Apply Gripset 11Y to surface, allow to tack off then place Swell Seal onto the primed areas. 
● For extremely rough surfaces, fill voids first and then use Gripset SB to adhere the Swell Seal.
● Placement of concrete can commence once Swell Seal is correctly bonded to surfaces.  Care must be taken to ensure the Swell Seal is not dislodged during the concrete application. 

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