I am remodelling the bathroom in which one of the walls of the shower is on an exterior wall. The old insulation was unfaced. Should I still be using unfaced? Previously I thought all exterior walls used faced (one side) insulation or is this unique for insulating behind a shower wall? Seattle area house built in 1987. Thanks Charlie
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I don't know what is required
I don't know what is required in Seattle however here vapor barriers are not required in walls.
Is it a fiberglass shower or a tiled shower?
Personally, I'd want a little extra insulation just to help keep the shower wall warm.
It will be a tiled shower.
charliez
You need a moisture barrier behind you cement board if that is your tile substrate.
It should lip over the tub flange. Any water that makes it behind the tile and the substrate will then pass down and into the tub.
Presumably.
You got a "ringer" with that reply!
Presumably.