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


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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