Quote:
Originally Posted by john70t
Closed cell only.
More expen$ive.
Structural support claim is dubious.
Open cell is more mushy and absorbs/transfers water to a degree.
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OK, one of the areas that I want to insulate is a vaulted ceiling. Due to the need to meet energy savings requirements, we need to insulate the ceiling. This means building a false ceiling that looks like the underside of the roof, which will contain insulation. That, or I go with a conventional flat suspended ceiling. If we use foam in the ceiling, and there is a roof leak with open cell foam, then it can get heavy and collapse through the ceiling? So the roof area needs to use fiberglass batting?