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One-Component, Rubberized Membrane

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Availability: In stock

From: $129.82

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From: $129.82


Liquid-applied with a trowel or spray, Henry’s Air-Bloc 31MR is a one-component, rubberized membrane that provides an air barrier when applied to a range of construction surfaces. Air-Bloc31MR cures to a tough, monolithic rubber-like membrane. 


  • 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
  • Integral mold resistant formulation as per ASTM D5990


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

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