Closed-cell foam for existing cathedral ceiling cavities?
I’ve a 150 year old house with a partial cathedral ceiling covered by plaster lathe, and dry wall on top. There is no insulation at all in the cathedral ceiling bays. I can access the top of each bay from the attic, and the bottom of the bay via the knee wall – is there a closed cell foam solution I can use which would not require me to tear down the approximate 8 linear feet (each bay) of ceiling, without blowing out the plaster? Thank you – Jim
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