May 9, 2008 Press Room Order Samples Login    
Air Barriers

Incorporating a continuous air barrier system in a building envelope is a complex issue. Specifying the right system and using it in the right way is critical to ensuring building performance and eliminating significant problems for a building and occupants alike.

Getting the performance and protection you need depends on selecting the right system from a manufacturer with the technical expertise and modeling tools to evaluate your design against real-world conditions. Whatever the climatic conditions or wall assembly components or design, Tremco has an appropriate system to fit the requirements. Our technical support team will provide a complete wall analysis using the WUFI® modeling tool to determine the system requirements and the appropriate placement. The best system can then be determined -- our ExoAir 100 Series impermeable system or, where seasonal temperatures and moisture variations are high, our ExoAir 220 Fluid-Applied Vapor Permeable Air Barrier Membrane. To ensure a comprehensive solution, Tremco provides all the compatible ancillary products necessary to provide continuity from the ExoAir Thru-Wall Flashing Membrane to ExoAir Mastic, Primers, compatible sealants and even a patent-pending solution to provide the critical tie-in to rough openings - new Proglaze® ETA Engineered Transition Assembly.

Click Here for Tremco’s Guidelines for Air Barrier Project Management and Pre-Construction Meeting Checklist.

Georgia-Pacific endorses Tremco's ExoAirTM Air Barrier System.
Click Here to view a Georgia-Pacific Technical Note which includes the ExoAir™ Air Barrier System.



Needham High School - Needham, MA

A key decision pivotal to the long-term viability of the renovation and expansion done at Needham High School was the selection of a materials supplier capable of providing a comprehensive building envelope solution, including below-grade waterproofing that could be applied over the existing building’s concrete foundation wall, flashings and window connections as well as the air barrier system to ensure compatibility of components and single-source accountability.

The air barrier system provided by Tremco included the ExoAir 120 Fluid-Applied Air & Vapor Barrier Membrane for use over the DensGlass® exterior sheathing board, the ExoAir 110 and 110LT (Low Temperature) Self-Adhered Air & Vapor Barrier Membranes, ExoAir TWF Self-Adhered Thru-Wall Flashing Membrane and ExoAir primer. Tremco’s Tremflex® 834 Siliconized Acrylic Latex Sealant was used to seal the seams in the DensGlass and Tremco’s Vulkem® 116 one-part, moisture-curing polyurethane sealant as a mastic for the edge of the self-adhered membrane to serve as a termination seal. Spectrem® 3 Silicone Sealant was used to seal various window components and create seals between the window and self-adhered membrane.









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