I have a home in San Jose California that was built in the late 70s. The exterior walls are stucco that was applied to the proper tar paper with metal lath but there is no wood sheathing under the paper.
I am removing a large section of drywall on the inside of an exterior wall and considering using fiberglass bat insulation before installing the new drywall. Will not having sheathing cause a problem?

  • 2
    It should not if the tar paper and stucco is in good condition and dry. Sheathing usually only provides a flat surface to bat insulation, not any hold.
    – crip659
    Feb 21 at 1:04


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