Bostik 425 multi-purpose acrylic latex admixture minimizes cracking in both interior and exterior applications.

    Key Features

    • Mortar, grout and patch admixture
    • Improved water resistance
    • Improved freeze/thaw resistance

    Multi-Purpose Acrylic Latex Admixture

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    Bostik 425™ multi-purpose acrylic latex admixture is a high solids acrylic emulsion designed to improve the performance of Bostik Tile-Mate®, Hydroment® Ceramic Tile Grout™ (Sanded), Hydroment® Dry Tile Grout™ (Unsanded), Single-Flex® FS, UltraFinish™ Pro and UltraRamp™ mortar, and jobsite prepared mortar beds.

    Where to Use

    • Interior and exterior floors
    • Interior and exterior walls


    • Plywood sub-floors
    • Porcelain tiles
    • Gypsum board
    • Cementious backer boards
    • Waterproofing membranes
    • Crack isolation membranes


    • Ceramic
    • Glazed wall tile
    • Quarry 

    Technical Data Sheet

    Safety Data Sheet

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