Can anyone tell me how / if Manual J differentiates between attic floor insulation and insulated roof decks?
I checked with our technical department here and they believe Table 4A would be the one used for an insulated roof.
Hope this helps.
Yes. It does. Which software are you using to model your projects? If you're using RightSuite (aka Wrightsoft) I can give you some guidance.
Yes Isaac, I am using Wrightsoft.