Vapor behind Kerdi Board?

[Nick360]

Hello,

I'm getting around to doing a remodel in my upstairs shower using the Schluter System. This is my first restroom shower DIY so had couple of questions before I start. The shower framing is against a closet on the other side if I decide to put some fiberglass insulation before the Kerdi Board does it need to have a vapor barrier? I did the demo work today, and didn't see any vapor barrier but wanted to make sure it's not needed before I start closing the walls. Open to suggestions, and tips for the Schluter System.

Thanks,

 

[wwhitney]

Kerdi Board is a vapor barrier, so you don't want a second vapor barrier, i.e. you want unfaced fiberglass. Although if you are insulating for sound, mineral wool might be a better choice.

Cheers, Wayne