Bostik 425 Multi-Purpose Acrylic Latex Admixture

Bostik 425 Multi-Purpose Acrylic Latex Admixture

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Bostik 425 Multi-Purpose Acrylic Latex Admixture
Starting at $17.35
From $17.35 to $65.97

Product Description

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.

Product Uses

  • Controls hydration rate (curing) of cement mortars and grouts
  • Use with thin set mortars to provide adhesion to non-masonry substrates such as plywood, waterproofing and crack isolation membranes and porcelain tile
  • Use with cement based tile grouts. Helps to ensure consistent cure results and better color development
  • Improve water resistance of grouts, thin sets and mud beds
  • Improve flexural and compressive strengths
  • Helps prevent cracking grout in wood framed structures
  • Use 425 Multi-Purpose Acrylic Latex Admixture to prepare bond coats
  • Use in jobsite prepared mortar “mud” 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 

Product Specifications

SKU: h-ac
Non-Returnable: Yes
Manufacturer: Bostik
Warranty: Limited Warranty

Product Questions & Answers

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