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Wet fiberglass ductwork

Hi Everyone, I had a leak in a pipe under the sink in our kitchen and it flooded the first floor and the basement. I have filed a claim with our insurance but haven't talked with them yet. My concern is does the 12 foot section need to be replaced to prevent mold? I poked a hole in it and drained approximatley 15 gallons from the ductwork. Should I insist on it being replaced? My gut is telling me it will dry out when I run the forced air system, but I don't want moisture damaging something in the furnace. I need a little guidance and some reccomendations. Thanks for your input. Roger


  • Mike T., Swampeast MO
    Mike T., Swampeast MO Member Posts: 6,928

    I've read and have been told that fiberglass becomes ineffective and should be replaced anytime it has been saturated with water.

    I've seen it first-hand after fire or flood. Even after drying it's compressed and is never again fluffy--and it's the "fluff" that allows it to insulate.
  • jim lockard
    jim lockard Member Posts: 1,059
    Cut it out

    Replace it with Insulated metal duct work and install a uv lamp at the furnace to kill any mold (If you have water damaged fiberglass ductwork you have mold.) We cut out a lot of fiberglass duct work and none of it is any good. Best Wishes J.Lockard
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