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So the airflow between the membrane and osb is enough to allow the membrane to breathe. I was worried with the OSB and the membrane touching that would make the membrane not able to breathe and cause it to easily penetrate water. Normal OSB is okay? Normal Breathable membrane? I better get...

Thinking about stopping the condensation beneath a tin roof there is lots of threads on here but mostly is about insulation but I don't want to insulate I just want to stop the condensation. I have a timber framed mono pitch roof with flitch beams. Quick sketch attached. Could I OSB on top of...