A question about adding spray foam in a ceiling
I have a general question. We are about ready to start insulation. I have a traditional ventilated roof. I had plywood placed on the floor in the attic.
Originally, I was going to just use canned spray foam to just seal the open gaps, but someone recommend just spraying 1-2 inches of spray foam on the floor from under the ceiling of the 2nd floor.
Question: Is this a good idea or bad idea? What problems?
As stated earlier, I’m not looking for R-value. I’m dong traditional blow-in insulation in the attic.
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