Henry Air-Bloc 31 MR

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Liquid-applied with a trowel or spray, Henry/Bakor Air-Bloc® 31MR is a one-component, rubberized membrane that provides an air barrier when applied to a range of construction surfaces. Air-Bloc®31MR cures to a tough, monolithic rubber-like membrane.
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  • Retains flexibility over a wide temperature range and bridges cracks
  • Adheres to most construction surfaces, including block, concrete, stone, wood and metal
  • Can be applied to damp concrete
  • Contains no organic solvents


  • Available in 5-gallon pails or 55-gallon drums


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