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Multi-Purpose Acrylic Latex Admixture
Product overview

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.

Geographic availability
  • Canada
  • United States of America

Smart Advantages

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

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