How would you insulate this?
We have a home we are doing a major renovation on North of Seattle. It is constructed different than anything I had come across before. The main support structure is 4×10’s 4′ OC spanned by 2×6 T&G. Super lumber heavy construction. Anyways, it is a three story house, first story is the garage with a currently uninsulated ceiling below the first floor of living space. I’m going to install a ducted heat pump (thanks to all of the awesome info on this site), insulate, and then fur across the 4×10’s and sheetrock to get a nice flat garage ceiling. Any recommendations for which method is best to insulate these large spans?
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