Vapor Retarder Over Drywall in High-Humidity Room
Hi, We are adding a room to our manuf center. Equipment requires elevated humidity. To “trap” the humidity in the room and protect the rest of the building, we are going to add vapor barrier to the wall system.
Question: if we add a vapor barrier to the exiting finish face of gyp bd sheathing, and then install another 1/2″ layer of gyp on that, will this create any issues? Are we better to remove the existing gyp bd install VB on studs and re-sheath? All walls are interior walls.
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