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01-18-02, 10:01 AM   #1  

By my local code I am to use R-19 insulation. Is the vapor barrier good enough on the fiberglass or do I need to put up plastic also? My job is adding family/play rooms in my basement. I have spaced my studs 1 1/2" from the concrete foundation, spacing 16" on center with PT sill plates. Please advise.

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garywms's Avatar

Join Date: Jul 2001
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01-18-02, 11:04 AM   #2  
IF it came with a vapor barrier, it should be good to go. You did frame the walls with 2x6 lumber, right. If you framed with 2x4 then you should only use r-13

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01-18-02, 03:29 PM   #3  
You do not want to use a visqueen vapor barrier over Kraft faced insulation. Either use unfaced insulation and poly or kraft faced.

Just curious where do you live that they require R-19 in basement walls?

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lefty's Avatar

Join Date: Mar 2000
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01-18-02, 08:21 PM   #4  
Jim, dp22 lives in New Hampshire. I've seen pictures -- it gets pretty cold there too! (LOL!!)

Seriously, dp22, you only want ONE vapor barrier, like garywms pointer out. And if you need R-19, you have to install it in a wall that has at least 2X6 framing.

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