Best way to insulate the wall between an attached garage and the house?
Just finished wrapping my house in 1 inch foil faced tuff-R polyiso during my siding update and now have the last exterior wall left - the shared wall between the garage.
I took down the old sheetrock (not to code thickness anyways) and took out the old batts. The only thing left is the interior sheetrock. The house was built in the early 70's so no vapor barrier. What is best option to insulate this space? I'm struggling between these two.
- Roxul in the stud bays. Place polyiso sheets over the studs and then firecode sheetrock over that.
- Cut polyiso to fit into the stud bays, spray foam the gaps, then fill with roxul. Foam over the studs and then sheetrock.
Any thoughts are much appreciated! Thank you in advance.
Posted Tue, 09/03/2013 - 06:23
Edited Tue, 09/03/2013 - 09:31
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