Crack Isolation and Waterproofing

Roll-On Crack Isolation Membrane

ROCI 1gal

Roll-On Crack Isolation Membrane


Ready-to-use, flexible, mold and mildew resistant crack isolation membrane.  Forms a uniform surface over approved substrates to prevent in-plane cracks up to 1⁄8" (3 mm) wide at the sub floor from telegraphing through the tile or stone.  For residential to extra heavy commercial applications. For interior or exterior use.

  • Meets ANSI A118.12 Specifications for Crack Isolation Membranes.
  • Isolates 1⁄8" (3 mm) in-plane movement of cracks and contraction (control) joints.
  • Apply over new (green) concrete as little as 3 days old.
  • Easy roller, trowel or spray application.
  • Fast Drying – ready for tile installation in as little as 2 to 3 hours.
  • Built-in anti-microbial technology resists mold – providing a zone of inhibition when tested in accordance with ASTM D-5590.
  • No mesh required.
  • Contains low VOC.
  • Available in 1 gallon and 5 gallon pails.

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Roll-On Crack Isolation Membrane