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    MasterProtect H 321

    A water based, silane/siloxane clear water repellent for masonry surfaces.


    MasterProtect H 321 is a one component, water based silane/siloxane blend.
    MasterProtect H 321 penetrates deep into the substrate where it reacts chemically. The reaction starts immediately as soon as the active ingredients get in contact with the substrate.
    The reaction time depends on temperature, humidity and nature of the substrate. The treated surface does bead water shortly after application of MasterProtect H 321.


    MasterProtect H 321 is a clear penetrating silane/siloxane based water repellent for use on porous and semi-porous substrates such as clay and calcium silicate brick, honed limy-sandstone and sand-cement render.


    Improves the aesthetics by reducing efflorescence. Surface appearance remains unchanged as MasterProtect H 321 penetrates into the substrate.
    Long term protection due to deep penetration. Ultraviolet and acid rain resistant.
    No influence on moisture vapour permeability.
    Cost effective
    One layer only.
    Easy to apply
    Ready to use, no dilution on site guarantees consistent quality.
    One component.
    Application equipment and spillages easily cleaned with soapy water.
    Environmentally friendly
    Water based.
    Reduces volatile organic emissions into the atmosphere.
    No dangerous fumes.


    MasterProtect H321 TDS

    pdf (288,71 Kb)

    Info & price request

    Address: Cairo Festival City, Building A1 Business District, 1st Floor 11835 Cairo, Egypt​

    Hotline Phone: 15560​