Insulating in a 3" deep wall


Old 06-05-02, 03:46 PM
tom neubelt
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Insulating in a 3" deep wall

I have a house that was built in 1841 and is Post and Beam but the wall cavities are only 3" deep. I am redoing the interior and would like to know what my Insulation options are? The house is located in northern VT. I know that I can get unfaced R-13 but am wondering if I should put blueboard over that. And if I do what do I need to consider in terms of windows, sheetrock etc..
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Old 06-10-02, 04:39 PM
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I'm assuming you're covering the post and beam with sheet rock. If the wall cavities are exposed, install R-13 faced if you can, if not then use unfaced and install a plastic vapor barrier (6 to 8 mil) and you can sheet rock over that.

Older homes like this are very rarely ever plumb and square, especially post and beam. If you intend to do this yourself, you're looking at a lot of work. Besides the insulation, windows and sheetrock, you also have to consider electrical outlet and switches, heating and cooling if applicable.
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