01732 360 095

HydroTank 306 Swell Mastic

Fast-curing, swellable, single-component, polymeric adhesive sealant. The special composition of HydroTank 306 Swell Mastic makes the sealant swell when in contact with water (to about 200% of original size).

  • Key Benefits
  • Typical Applications
  • Technical Data
  • Key Benefits

    Key Benefits

    • Very high resistance to water pressure.
    • Delayed swelling – will not swell during the installation process or during the concrete cure.
    • Swells up to 200% of its original size to quickly seal leaks at joints in the structure.
    • Very resistant to the high alkalinity of concrete.
    • Maintains very high elasticity and tensile strength, even when swollen.
    • Age resistant, no embrittlement.

    Typical Applications

    Typical Applications

    Technical Data

    Technical Data

     Cured performance  Result
    Tensile strength 5.8 MPa
    Elasticity  Up to 11 x initial size
    Swelling capability Up to 3.5 times initial size
    Watertightness  1 bar
    Installation temperature  5ºC to 40ºC
    Service temperature  -40ºC to 100ºC

    Speak to our friendly, expert team

    Our staff are able to provide guidance for projects of all sizes, whether you require some general advice about damp or waterproofing, or support with technical drawings and specifications.

    By submitting your details you confirm that you agree to the storing and processing of your personal data by Newton Waterproofing as described in the privacy statement.