Bostik 425 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.

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

Substrates

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

Materials

• Ceramic
• Glazed wall tile
• Quarry