Bostik 425 Multi-Purpose Acrylic Latex Admixture 1 Gallon

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HY 425 Acrylic Admixture
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Product Overview


Multi-Purpose Acrylic Latex Admixture

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 

Key Features


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

Product SDS



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