Below grade insulation installation


Old 03-14-05, 05:17 AM
Stevetra's Avatar
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Join Date: Sep 2004
Location: Asheboro, NC
Posts: 348
Cool Below grade insulation installation

Hi guys/girls
I am moving on with my project and will hopefully be installing insulation later this week.
I will be installing the insulation in my 2x4 studded perimeter walls in my basement.
The walls are set 1 inside the cement block walls (which have been drylocked).
I plan on using kraft faced insulation so I can staple it to the studs and maintain my 1 air gap; the guy who is selling me the insulation says the paper is the vapor barrier.
My question is, should I also apply a plastic vapor barrier over that?

Just want to be sure before I hang sheetrock, the plastic is cheap enough, and would hate to find out after Im finished that I should have done it.

Being that the insulation is going in below grade, I need to make sure I do this right.

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Old 03-14-05, 03:37 PM
Join Date: Nov 2001
Location: USA
Posts: 1,873
Your can install the plastic sheeting over the faced insulation. the plastic sheets may be a vapor barrier but its real purpose is to act as an air barrier.

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