I am building a new house, on an old foundation in CT, and looking to use spary foam, probably icynene in the finished attic. I was told by my building inspector that I would need to fill the entire rafter bay and then sheetrock.
I was suprised that I would have to go to the expense of filling the entire 10 inch rafter. I would appreciate any expreience in my climate with this, and tips on venting or not venting the attic.
Also trying to decide how to inulate the crawlspace.