Rigid foam attached to underside of rafters: Good idea?
I live in zone 5a Connecticut , lucky me. Have mechanicals in attic and would like to semi condition space while maintaining a vented roof. Thinking 4″ board, foil on both sides with a value of r28ish. Would like to use attic for storage as well. This method I believe if air sealed and installed well may be a good solution. Am I nuts or on the correct path. Thankyou, Noah.
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