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    MasterEmaco N 425: Non-sag concrete repair mortar with integral corrosion inhibitor for vertical and overhead applications

    Formerly: Gel Patch

    How does MasterEmaco N 425 work?

    MasterEmaco N 425 is a one-component fast-setting polymer modified portland cement-based repair mortar for vertical and overhead concrete and masonry surfaces.

    Recommended uses:

    • Interior and exterior
    • Vertical and overhead
    • Above and below grade
    • Spalls or holes in concrete
    • Deteriorated edges

    What are the unique features of MasterEmaco N 425?

    • Non-sag consistency able to be placed in 2" (51 mm) thick lifts
    • Readily sculpted, shaved, and finished to match existing substrate
    • Very low chloride permeability and an integral corrosion inhibitor protects reinforcing steel
    • Only requires the addition of potable water

    What are the benefits of MasterEmaco N 425?

    • Low shrinkage produces stable, durable bond
    • Lightweight microscopic beads improve vertical and overhead workability
    • Polymer modification improves adhesion and provides increased freeze/thaw stability

    On the Job Videos

    US / Canada Product Information

    Data Guide

    Date Guide (French)

    Data Guide (Spanish)

    Certification Letter

    Guide Spec

    Guide Spec

    LEED Letter

    Direct contact

    Master Builders Solutions Technical Support

    Construction Systems


    Safety Data Sheet (SDS)

    Find all available safety data sheets for this product.

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    Related Literature

    Certification Letter

    pdf (76.40 Kb)

    Data Guide

    pdf (294.52 Kb)

    Data Guide (French)

    pdf (311.50 Kb)

    Data Guide (Spanish)

    pdf (179.69 Kb)

    Guide Spec

    doc (155.50 Kb)

    Guide Spec

    doc (155.00 Kb)

    LEED Letter

    pdf (92.80 Kb)

    zip (84.16 Kb)