teranz

Update... I had the fiberglass trunk in the attic replaced with fiberglass wrapped metal. The trunk was in sections when delivered and was passed into the attic and assembled up there. The system seemed to work better than in the past. I did recently sell the house, the new owners had the air handler moved into the attic as well- no telling what it looks like now but it was in good shape when bought. The metal was a good choice in my opinion.

I did look up Aeroseal and it appears to be a great solution for leaks but as stated in the video it seals leaks, it does not coat the ductwork. Is this not exactly true? Does it coat the ducts inside? The price was also stated to be $1500 - $2500. It may not matter, there is no dealer close to me.[:-weepn] I found this information elsewhere regarding "coating" fiberglass ductboard... "Some coatings available for fiberglass ductboard put a durable surface coating on the fiberglass, and some actually get absorbed by the ductboard. Both have the ability to extend the life of the ductboard; however, applying a coating to fiberglass HVAC ducts that are beginning to deteriorate and/or have signs of mold growth is not recommended." Seems replacement with metal continues to be the only real option so far.

Having read the entire thread it`s clear the metal with fiberglass wrap would have been my first choice when the house was built (not original owner). Now I'm leaning towards the metal replacement but not knowing the possible array of products available I was hoping a suitable, "safe" fix was available that could be implemented. Seems there are no really good alternatives despite the cost of doing it over in metal, not a simple task in this house.

Hi All: I'm new on this forum and found it while researching the issues with fiberglass ducts in my house, built in 1986. The main air trunk from the HVAC to the flex ducts is made with fiberglass flexboard, it is in the attic. I'm not sure what if any sealant or coating the fiberglass "inside" has on it. Know little of anything about it. The Air Handler is going to be replaced and the contractor was suggesting replacing the fiberglass... what would be the criteria I should use to determine if this is truly warranted? Are there cases that indicate I should leave it alone? Thanks!