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24 mil Composite Sheet Designed for Use as the Membrane or as a Component of an Air Barrier System.

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From: $122.09

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From: $122.09


ExoAir 111 comprises 20 mils of high-performance butyl laminated to a 4 mil metalized high-density polypropylene film and a siliconized release liner.

ExoAir 111 is an impermeable, self adhered sheet designed to be applied to exterior cavity walls in order to control air infiltration/exfiltration, vapor transmission and water penetration. Typically applied to exterior sheathing boards and concrete block, ExoAir 111 can also be applied to poured concrete, steel and wood based substrate and serves as a detailing or transition membrane into window and door openings. ExoAir 111 is designed to be installed when both the air and surface temperature are 20 ˚F (-6 ˚C) and rising.


Basic Uses

  • The high-performance butyl has been tested and is chemically compatible with the all of the asphalt based membranes in the ExoAir product line.
  • Primerless installation allows for faster installation time.
  • Manufactured to a preset, uniform thickness that provides consistent and uniform coverage at proper thickness.
  • Rugged HDPP film protects high-performance butyl membrane against incidental damage during construction process.
  • Variety of widths available for job specific needs.
  • Metalized facer reduces heat absorption, resulting in thermal stability during construction cycle.
  • One product for a wide range of installation and in-service temperatures for job installation flexibility.
  • Material installation and service temperatures eliminate the need for low temperature or high temperature accessories.
  • Reduced material weight compared to traditional 40 mil systems reduces fatigue on installers and can increase productivity.

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