Tec 1Flex 1/4″ Crack Isolation Mortar

Tile setting mortar that also functions as a 1/4″ crack isolation membrane.  Also designed for the installation of tile directly over plywood/OSB with joist spacing up to 24″ o.c. as part of the TEC® Single Layer Floor System.  For use over plywood, cementitious surfaces and other substrates.


  • One-step crack isolation and tile setting.
  • Superior bond strength.
  • Isolates horizontal movement of cracks up to 1/4″.
  • Exceeds ANSI A118.4, A118.11 and A118.15 specifications
  • Provides 50 lbs. of coverage in a 35 lb. bag.
  • Contains 1% pre-consumer recycled content and zero VOC.
  • Available in 35 lb. bags.

Additional Information

Setting Material Type

Mortars & Adhesives