TEC 316 HydraFlex Waterproofing Membrane 3.5 Gallon

TEC 316 HydraFlex waterproofing membrane is a liquid-applied crack isolation and waterproofing coat that goes down before tile. Roll or trowel it across showers, floors, and wet areas to block water from the substrate below and bridge minor cracks that would telegraph through the finished tile.

This 3.5 gallon pail suits larger floors and multi-shower jobs, ready to use with no mixing. Apply it in coats over concrete, cement board, and other approved substrates, let it cure between coats, and set tile directly onto the cured membrane. One product handles crack isolation and waterproofing together.

Pros keep the larger HydraFlex pail on hand for whole-bathroom and commercial wet-area work. Tile Outlets stocks the 3.5 gallon size for bigger installs.