Insulating attic with foam and blown insulation
I am currently building a house in North Alabama, Zone 3, and conflicted on how to insulate the attic space. I originally planned to encapsulate the attic in foam but all my duct work is in the basement so I saw no need close in that extra space. I’m aiming for great air sealing so thought about the idea of putting 1-2″ of closed cell foam across the entire attic floor for air sealing/insulation and then blowing in insulation on top of the closed cell foam. I thought that would also help with insulation dust from making its way into the house. Is that a good or bad idea? Is there a better recommended option?
Thanks in advance for your comments.
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