Air space or rigid foam to insulate on exterior of block wall that will have furring strips for vinyl siding.
I've been googling and cannot find info close to my situation. So I am hoping to get some ideas here. I have purchased an old building with block walls and no windows. It is the corner eyesore but is useful as a secondary shop for me, plus it zoned as commercial property, which you never know when having a commercial address can be beneficial. Anyway, I only plan to use it as a workshop, so optimal heating isn't crucial. However, being an eyesore, and my experience with painted exteriors in Michigan, I plan to vinyl side the building, which will include furring strips. I was thinking of double reflective polyethylene roll insulation after the furring strips. Now, some sales pitches for various items claim air space is insulation. I was wondering the effectiveness of the airspace vs filling it with 3/4 inch rigid foam. Or would I be better off putting the polyethylene on first, then furring strips. Also, would I gain much to insulate the interior as well as exterior of the block walls. I plan on using wood burner heat, so it seems to me once I get the block warm, it would really hold the heat. Any help will be greatly appreciated. Thank You
Posted Aug 3, 2014 8:53 PM ET
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