Permeance of Peel-and-Stick WRB
German DIN 4108-3: interior materials should have a permeance 5x lower than exterior materials — is this realistic with self-adhered WRB if the interior material is taped plywood?
So let’s say you are using taped plywood on the interior of the framing as your air control layer and vapor throttle, at about 10 US perms (it changes with humidity but let’s run with that for this example).
Where are you going to find a self-adhered WRB with a permeance of 50?
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