We recently purchased a 1960's Levitt home that has 6" of paper faced attic insulation. Part of the attic has osb so the space can be used for storage.
The attic leaks the second floor warmth terribly. A couple of questions about adding additional insulation:
1: Is it absolutely necessary to pull up the OSB, or can the R-30 or R-38 rolled insulation be pull right over it?
2: Can I use paper faced insulation again? Or, does it have to be unfaced?
3: The paper faced R-38 is, strangely enough, cheaper than the unfaced R-30. If it is necessary to have the unfaced type, can I just peel the paper off?
(I recognize some of this might have been answered before, but didn't see this specific set of questions.)