CamaroMan
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# Posted: 19 Nov 2025 10:37am
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Hi all - planing our roof for the cabin - i have very heavy duty metal roof sheets that you can just about walk on - and id like to install them with an air gap as they emit heat - the old 70s land rovers actually had an optional 2nd roof for this reason.
How could I do this above the underlayment as I cannot have joists OVER the underlayment.
This is a lean to roof so very straight forward. Possibly space the roof sheets off the structure? and can I put radiant osb underneath the underlayment with shiny side up?
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