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We used TGI for roof joists in our open beam ceiling and there will be no roof ventilation. 4″ of polyurethane was sprayed on the ceiling from the inside right against the roof sheathing. 2″ was sprayed on the walls. We will add fiberglass to the wall and roof to fill the cavities and use a poly vapor barrier. Here is our house web site;
There are no building inspectors in Oliver county, North Dakota so you can do anything you want. You have to get a building permit ($15) but all they want is your money.
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We used TGI for roof joists in our open beam ceiling and there will be no roof ventilation. 4" of polyurethane was sprayed on the ceiling from the inside right against the roof sheathing. 2" was sprayed on the walls. We will add fiberglass to the wall and roof to fill the cavities and use a poly vapor barrier. Here is our house web site;
The Lackman House
There are no building inspectors in Oliver county, North Dakota so you can do anything you want. You have to get a building permit ($15) but all they want is your money.