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    MasterSeal 930 / MasterSeal 933

    Joint waterproofing bandage and epoxy resin adhesive, Regulation 31 Approved for use with potable water

    When waterproofing structures to keep water out or in, accommodating structural movement is a critical consideration. Where there’s water pressure, joints or cracks need to withstand a potentially high degree of movement across both vertical and horizontal applications. MasterSeal 930 / MasterSeal 933 is a highly elastic pre-formed membrane that addresses this demand.

    Where to use MasterSeal 930 / MasterSeal 933?

    MasterSeal 930 / MasterSeal 933 is a dynamic system that ensures waterproofing continuity across joints or cracks in:

    Water retaining structures

    • Reservoirs
    • Water towers
    • Filter beds

    Underground structures

    • Tunnels
    • Basements
    • ​Cellars

    It can be used on different substrates from concrete, brick and block to metals.

    What makes MasterSeal 930/MasterSeal 933 different?

    This proven high-performance system is Regulation 31 approved for contact with potable water. It can be used on horizontal and vertical joint/cracks and enables a return to service in just three days at ≥ 14°C, with a 10-day return to service at ≥ 7°C. Suitable for application in damp conditions, it involves low adhesive consumption, and no solvent wipe is needed. Once applied, it’s resistant to UV light, ozone and many chemicals.

    What is the system made of?

    The system comprises MasterSeal 930 membrane and MasterSeal 933 two-part epoxy-resin adhesive. 


    MasterSeal 930: Technical Data Sheet

    pdf (281.80 Kb)

    Direct contact

    Chris Gallivan

    Product Manager, Construction Systems - UK & Ireland

    +44 7966123422


    MasterSeal 930: Technical Data Sheet

    pdf (281.80 Kb)