ExoAir Primer is a VOC-compliant adhesive primer formulated for use with ExoAir 110/110LT and ExoAir TWF. It can be applied to common construction substrates using a brush or roller. ExoAir Primer is specifically formulated for use with the ExoAir line of air barrier systems, ensuring compatibility with all components required to create the full assembly. Once on the substrate, ExoAir Primer dries quickly, allowing work to proceed without delay. ExoAir 10 Primer is a SBS rapid-curing adhesive primer formulated to prepare and promote adhesion to sound, clean and dry concrete masonry units (cmu) or block wall and glassmat faced sheathing. ExoAir 10 Primer should be applied with a roller or brush prior to application of ExoAir 110/110LT or ExoAir TWF. Apply ExoAir 110/110LT or ExoAir TWF after ExoAir v10 Primer dries to a non-transferable tacky film. Applicable Standards: UL Classified, ABAA Evaluated, ASTM International, U.S. Green Building Council Member