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building a metal roof on top of OSB sheets
(actually using "solarboard" which has an aluminum-foil backing for radiant-heat
blocking). we'll have an un-insulated, well-ventilated (open-ridge) attic
underneath.
question: is it useful at all to put a layer of tar
paper between metal and wood (to limit condensation on wood surface ?? or??). if
yes, is there a need for a (ventilation) space above tar paper?)
thanks
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