Kraft-faced insulation and/or interior poly vapor retarder
mtbphoto
| Posted in General Questions on
Hello. Finally going to remove all my 1/4″ plywood interior walls and replace with drywall. Zone 6, high elevation snowy high desert, no A/C, heating only, Sierra Mountains California. I would like to replace the old 1970’s insulation with R15 batts and the original insulation was installed poorly.
My question is should I go with Kraft faced batts or should I go unfaced batts with poly sheeting vapor barrier? Would it be a bad idea to go with both kraft faced batts and poly sheeting? I am finding it very hard to source Rockwool or unfaced insulation in my area.
Thank You
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Search and download construction details
Replies
Hi Wesley,
You could go with kraft-faced fiberglass batts and do not need to install poly sheeting over that. If you go with fiberglass batts, it is important to get the installation right. A big part of the work is air sealing. This article may be helpful if you choose to go with fiberglass: Making Fiberglass Work.
If this is not a DIY project, you might also consider looking for a dense-pack cellulose installer, which is another good option.