What is the process to seal a house using Aero barrier spray?
The aero barrier will not work in the vertical plane. Can you explain this concept? the vertical plane need another method to seal?
The aero barrier will not work in the vertical plane. Can you explain this concept? the vertical plane need another method to seal?
The Aerobarrier air barrier spray you likely read about here does not stick to vertical surfaces, but it does fill all the holes (up to a certain size), so no other technique is needed. For anyone reading along, this is the article –
Aerobarrier home and attic air-sealing spray
When a house is pressurized, the fine particles of the Aerobarrier spray are forced out any holes in the building envelope, to which they adhere, and effectively ‘plug’ those holes. So while the particles do not stick to any vertical surface, they do fill holes on vertical surfaces. This is one of those products that come out once in a while that seems to good to be true, but it actually works.
Everyone here was somewhat skeptical at first but also optimistic, so when it turned out to actually work, we were all very impressed. To us this is a game-changing product in terms of creating airtight homes, because no amount of human due diligence with a roll of tape will be able to plug the amount of holes that this spray can do. This is a technique that we would recommend applying to any new home build or full retrofit renoation project that includes working on airtightness.
So would you suggest using air barrier and tape first? Or go straight for the Aerobarrier and bypass all the hassle of membrane and tape? Or is this for homes that have a blower door test and fail? And, if getting rid of the membrane and tape, on balance what is the cost difference? Thanks!
Aero barrier is something we would do after we have already done our best at diligently installing an air barrier. The particles need some sort of substrate to adhere to, it isn't a coating thick enough that you could forgo an *actual* air barrier, this is intended to fill the thousands of little holes that are there that you don't even know exist.