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That matches the description of what a contractor told me they used to use a lot in the 70s and early 80s in Florida before they "discovered" what crap (technical term) it was. Glorified cardboard is what he called that vaunted its thermal abilities. Turns out it swells when wet or moist (great in FL), has little to no shear value, and insulates like a hotel sheet.
Other winners I have seen lately:
Wood frame, diagonal straps for shear, 1/2" rigid insulation board, lathe and stucco (on a house)
Stucco sprayed over aluminum siding, no sheathing, siding attached directly to wood studs (gable end of house)
Vinyl siding over rigid insulation board, attached to studs, no sheathing, no diag straps (two story house)
All in hurricane alley.
And I could go on and on....
Andrew Kester, PE
Structural Engineering Consultant
Lake Mary, FL