This session will discuss the overall objectives and results of a Building America project focused on integrating a new AeroBarrier technology for automating the building sealing process in new homes. The process involves pressurizing the building while applying an aerosol sealant “fog” to the building interior. As air escapes the building through leaks in the envelope, the sealant particles are carried to the leaks where they impact and sticks to seal the leaks. A blower door is used to pressurize the house, provide real-time feedback and a permanent record of the sealing. The technology simultaneously measures, locates, and seals house leaks.
AeroBarrier sealing typically seals 80% of the sealable leakage within one to two hours of injection and some homes are sealed to passive house standards of 0.6 ACH50. The project team worked directly with Minnesota and California builders to identify the best stages for incorporating aerosol sealing from the perspectives of cost, performance, and seamless integration into the construction process. In addition to producing tighter houses, conventional sealing methods are evaluated to determine whether they can be eliminated or reduced to further improve cost effectiveness.