Securock ExoAir 430

Securock® ExoAir® 430 pre-applied fluid-applied synthetic permeable air/water barrier membrane is a monolithic, elastomeric membrane that is applied in a factory setting eliminating the inconsistencies and weather impact that can occur when applied in the field. It is applied to the face of USG’s Brand Ultralight Glass-Mat Sheathing panels for above-grade wall assemblies to mitigate air infiltration/exfiltration and water penetration while remaining permeable to the passage of water vapor.


  • The controlled factory application of the membrane to the face of the panel provides the assurance that only a traditional thick-film membrane can
  • With the Securock® ExoAir® 430 System, application variability of the air barrier is no longer a concern; our controlled factory environment ensures proper mil thickness and membrane uniformity, which means no more job site rework and less job site waste. In addition, membrane adhesion is assured; it can’t wash off from rain or from improper sheathing preparation
  • The direct connection of the detailing sealants to the air barrier membrane gives you the visual verification of air barrier continuity