HydraFlex™ Waterproofing Crack Isolation Membrane


HydraFlex™ Waterproofing Crack Isolation Membrane is a ready-to-use, flexible, mold and mildew resistant waterproofing crack isolation membrane for interior and exterior applications. It forms a smooth, monolithic, watertight surface over walls, floors and ceilings. HydraFlex stops in-plane cracks up to 1/8" (3 mm) or up to 1⁄4" (6 mm)* wide at the subfloor from telegraphing through to ceramic and stone tile. For residential to extra heavy commercial applications.

Recommended Substrates

  • Existing Concrete
  • Gypsum Wallboard
  • APA Grade Trademarked Exposure 1 Plywood
  • Gypsum Underlayment
  • Tile
  • Adhesive Residue
  • Cold Rolled Steel

Recommended Applications

  • Interior
  • Exterior

Set Speed

  • Fast

Conforms with LEED v4 low emitting interiors. Compliant with (CDPH) Standard Method v1.2 VOC Emissions.

Product Features

  • Fast Drying – ready for tile installation in 1 to 3 hours
  • Exceeds ANSI A118.10 Specifications for Waterproof Membranes
  • Exceeds ANSI A118.12 Specifications for Crack Isolation Membranes
  • Easy to Trowel
  • Apply over new (green) concrete as little as 3 days old
  • Mold and Mildew Resistant
  • Approved over control joints
  • Low VOC
  • Contributes to LEED® project points