Screen shot below from a Keystone Montana factory tour. This video was posted 7 months ago so it probably shows the roof of a 2023 model. It shows single OSB panels running across the roof in the east-west direction. You can see the butt joints covered with tape.
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MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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