Floors over Concrete - Less Than 1/8 in. Tile

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Floors over Concrete - Less Than 18 in. Tile

HydraFlex™ Waterproofing Crack Isolation Membrane

A five gallon pail of TEC’s crack isolation membrane, HydraFlex™
HydraFlex 5gal

HydraFlex™ Waterproofing Crack Isolation Membrane

Ready-to-use, flexible, mold and mildew resistant waterproofing crack isolation membrane for interior and exterior applications. Forms a smooth, monolithic, watertight surface over walls, floors and ceilings. HydraFlex™ Membrane stops in-plane cracks up to ¼" (6 mm) wide at the subfloor from telegraphing through to ceramic and stone tile. For residential to extra heavy commercial applications.

  • Can be applied by roller, trowel or spray.
  • Exceeds ANSI A118.10 Specifications for Waterproof Membranes.
  • Exceeds ANSI A118.12 Specifications for Crack Isolation Membranes.
  • Use for Positive Hydrostatic Pressure Applications.
  • Fast Drying – ready for tile installation in 2 to 3 hours.
  • No mesh required (except for waterproofing installations at changes in-plane and substrate joints).
  • Apply over new (green) concrete as little as 3 days old.
  • Isolates cracks up to 1⁄4" (6 mm).
  • Resists mold and mildew growth.
  • IAPMO approved.
  • Contains low VOC.
  • Available in 1 gallon and 5 gallon pails.

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HydraFlex™ Waterproofing Crack Isolation Membrane


We are updating our MSDS, now called SDS, to support the Global Harmonization System of Labeling and Classification (GHS). This new UN designed system for safety data sheets provides a unified standard for communicating the classification of chemicals and associated hazards. Click the icon to learn more.



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