Ceiling insulation question
Question: On ceilings where the wallboard has an aluminum foil backing (which I assume serves as a vapor barrier?) there is no need to use Craft paper backed insulation. Plain fiberglass mats will do. Right?
I am redoing my atticÂs insulationÂ
There is already some fiberglass insulation in the attic but it is only R-11, has craft paper, and it is installed backwards (Craft paper side up!). It is 50 years old, the Craft paper is very brittle and has many holes anyway (perhaps a good thing in this case, since it is installed backwards).
In any case, my upgrade plan is to remove the craft paper from these existing R-11 old mats (if I can) and re-lay down just the fiberglass. Then IÂm planning to add another layer of, say, R-13 mats (plain mats - no Craft paper) to increase the R factor (to an R-24 total).
Does this sound like a logical plan?