ExoAir 220

Fluid-Applied, Asphaltic Air & Vapor Permeable Membrane

ExoAir® 220 Fluid-Applied Permeable Air Barrier Membrane is a monolithic, elastomeric membrane designed to be rolled or sprayed onto exterior above-grade wall assemblies to mitigate air infiltration/exfiltration and water penetration while remaining permeable to the passage of water vapor.


  • ExoAir 220 is typically applied to exterior sheathing panels, concrete block, poured concrete or wood substrates as an air and vapor barrier material
  • ExoAir 220 can be used with ExoAir 110, ExoAir 110AT or Dymonic® 100 liquid flashing to detail into the rough opening