The Tremco ExoAir Primer – Air & Vapor Barrier Membrane Primer is a high-performance surface preparation product designed to enhance adhesion of ExoAir self-adhered membranes in demanding construction environments. Engineered specifically for use within Tremco’s ExoAir air barrier systems, this primer promotes strong, reliable bonding between the substrate and membrane, helping ensure long-term building envelope performance.
ExoAir Primer is formulated to improve adhesion on a variety of common construction substrates, including exterior gypsum sheathing, concrete, masonry, wood, and other porous surfaces. By conditioning and stabilizing the substrate surface, it helps create an optimal bonding surface for self-adhered air and vapor barrier membranes. This enhanced adhesion supports consistent membrane installation, reducing the risk of lifting, wrinkling, or edge failure.
Ideal for commercial and residential wall assemblies, Tremco ExoAir Primer plays a critical role in maintaining the integrity of air and vapor barrier systems. Proper surface preparation helps minimize uncontrolled air infiltration, vapor transmission, and water penetration—key factors in improving energy efficiency and protecting structural components. Designed for professional use, ExoAir Primer contributes to durable, code-compliant building envelope systems that deliver reliable long-term performance in a wide range of environmental conditions.
No returns on consumable supplies.
