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    MasterSeal 595

    Rapid-setting water-stop mortar

    How does MasterSeal 595 work?

    MasterSeal 595 is a cement-based, water-stop mortar. It will stop running and seeping water through cracks in concrete under hydrostatic pressure. It can also be used to provide a watertight seal in pipes, tanks, manholes, and a variety of other locations.

    Recommended uses:

    • Stopping running water through seeping cracks under hydrostatic water pressure
    • Providing watertight seals at manhole inlet, outlet, and invert connections
    • Providing watertight seals at joints in sewer lines
    • Providing watertight seals in concrete pipes, tanks, wet wells
    • Patching construction faults in precast and cast-in-place structures
    • Grouting anchors and bolts
    • Forming water-resistant coves at the junction of floors and walls

    What are the features of MasterSeal 595?

    • Sets in 45 – 90 seconds
    • Controlled set behavior with no flash set
    • Very rapid strength gain
    • Forms watertight seals
    • Freeze/thaw resistant
    • One-component

    What are the benefits of MasterSeal 595?

    • Stops running water
    • Reliable strength gain
    • Resistant to washout
    • Stops infiltration or exfiltration
    • Suitable for cold, wet environments
    • Just add water before using​

    Direct contact

    Master Builders Solutions Technical Support

    Admixture Systems

    1-800-628-9990

    Safety Data Sheet (SDS)

    Find all available safety data sheets for this product.

    Product Certifications

    Generate a free certificate of conformance for a specific Master Builders Solutions construction product.

    Related Literature

    Data Guide

    pdf (344.58 Kb)

    MasterSeal 595 SDS

    pdf (305.96 Kb)

    MasterSeal 595 SDS

    pdf (247.34 Kb)

    MasterSeal 595 SDS

    pdf (496.39 Kb)

    MasterSeal 595 SDS

    pdf (380.67 Kb)