GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Audio Play Icon Headphones Icon Plus Icon Minus Icon Check Icon Print Icon Picture icon Single Arrow Icon Double Arrow Icon Hamburger Icon TV Icon Close Icon Sorted Hamburger/Search Icon

Community and Q&A

Cedar ceiling in bathroom?

cyprus2400 | Posted in Interior Design on

I want to install a cedar ceiling in my bathroom above the shower over the existing Sheetrock. Is there a vapor barrier needed or will i need any airspace between the ceder plank and the Sheetrock? I want planning on using any sealant on the wood. just tongue and groove planks and brad nail it up. Thanks for any help.

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


  1. User avatar GBA Editor
    Martin Holladay | | #1

    No, you don't need an additional vapor barrier between the drywall and the cedar boards. However, I wouldn't use untreated cedar in that location. You'll get steam and splashing, and therefore there is the potential for mold and mildew.

    Conscientious use of your bathroom exhaust fan every time you shower (and for 10 minutes afterwards) will help.

    Remember to use stainless-steel fasteners. Ordinary fasteners will leave rust streaks.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |