ARDEX V 1300™ Self-Leveling Underlayment is a high-performance, pourable or pumpable underlayment designed to level and smooth interior substrates before installing finished flooring. It delivers exceptional flow, strength, and versatility with a variable water ratio for optimal coverage and handling. Suitable for use over concrete, wood, terrazzo, and properly prepared non-porous surfaces, it creates a smooth, durable base for a wide range of floor coverings in dry, interior environments. Key Features Levels and smooths a variety of interior substrates Variable water ratio for better flow and increased coverage Installs up to 2″ (50.8mm) in most applications without added aggregate Pourable or pumpable Walkable in 2 to 4 hours Install moisture-insensitive tile and stone after 6 hours, most other floor coveringsafter 24 hours Shop all of our Ardex products.