Hohmann & Barnard’s popular ENVIRO-BARRIER™ AVB System is about to add two new formulations, an AVB for virtually every condition! Download our flyer to learn more! ENVIRO-BARRIER™ POLYETHER & SILICONE FLYER ENVIRO-BARRIER™ is a single component, fluid applied, elastomeric membrane to provide an air, water and vapor barrier when applied to above grade wall assemblies. It cures to form a resilient, monolithic, fully adhered elastomeric membrane which resists air leakage and water penetration plus acts as a vapor barrier. Complies with NFPA 285 in various wall assemblies. 
  • Remains flexible over a wide temperature range
  • Meets and exceeds highest industry standards for air barrier performance
  • Cost effective easy spray application
  • Asphalt-free formulation
  • Excellent adhesion to most construction materials such as exterior gypsum board, CMU, concrete, stone, wood and metal.
PACKAGING: ENVIRO-BARRIER™ comes in 5 gallon pails and 55 gallon drums. DOCUMENTS: NOTE:
  • ENVIRO-BARRIER™ Submittal Sheet and MSDS files are available for download in the column to the right.
  • HB Sealant recommended for patching air barrier repairs, terminating edges of vertical transitional tapes, and filling voids during the air barrier application process.


  • Fluid Applied


  • Air & Vapor Barrier