Hi everyone, I'm about to start putting up kerdi board in my shower stall. I want to do the ceiling first but I have blown insulation being held up by some poly up there (2nd floor shower). Because k-board has/is a vapour barrier how would you suggest I address this? Remove poly and replace with some batts ten kerdi board? Or remove poly and insulation entirely?
I think you should be fine as is cuz the other side of the barrier is not a cold wall. But vapor barriers are very confusing and recommendations vary depending on the area and weather conditions. Check with your local building department.
I guess the insulation is there to soften noises?
TILE GUY - retired- TROY, MI - Method & Product suitability consulting.