Is a vapor barrier needed behind cement board in a shower?
We put up this green plastic that we got at home depot
on an exterior wall you will need vapour barrier
That black paper, when you put it in staple as littla as possible start at the bottom go length ways in rows and over lap the next row a bit over the top edge. ( just had my shower done)
Vapor barrier isn't needed in a shower unless it's on an exterior wall. The concrete board is enough for interior walls. Good Luck
