Insulating a Bathroom Exhaust Pipe
We gave our contractor specifications found on this site for our new bathroom exhaust fan and piping. They ran the 6″ galvanized pipe tight against the ceiling in the attic and forgot to cover the pipe in vinyl-faced fiberglass insulation. They said they would take care of it but then their spray foam person covered both ends of the pipe in a large amount of foam. This locked the pipe in place and now it won’t come apart. They are suggesting they cover the rest of the pipe with spray foam. We would still have bare pipe touching the top of the ceiling. We are in climate zone 4a. Is this acceptable?
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