Latest Discussions : Garage


04:56PM | 01/22/15
Member Since: 01/22/15
2 lifetime posts
I have a single-car attached garage with laundry inside. My home is a 1947 Mason Brick. I want to insulate the roof in order to have a temporary bedroom for my son who has moved home for a year or so. My question is, can I use R30 pink insulation installed directly to the underside of the roof (the rafters)and use a polyurethane vapor barrier to avoid building a ceiling? -Or am I going to make the moisture issue worse if I go this route?

Contractor John

07:59AM | 01/24/15
Member Since: 01/04/15
56 lifetime posts
In my opinion you will be creating a problem. You never want to place insulation tight against the bottom of the roof and then seal it in with plastic. If you were to use kraft (paper) faced don't forget the paper is flammable.
Tyvek is also flammable. Why not cover it with drywall? I know it is more work but it will be permanent.
Contractor John

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