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

Bead board or wainscoting on interior and exterior walls

Karen Connolly | Posted in General Questions on

So after reading about installing tongue and grove on a cathedral ceiling I learned that drywall should be installed before the tongue and groove. Because of the extra work and expense we are going to leave the ceiling drywall for now but because we are skipping out on the wood ceiling I would like to put up some wood on some of the exterior and/or interior walls. I’m wondering if we need to put up drywall first as we would in the ceiling for air sealing or can we skip this step on the walls. The walls are 2×4 construction with r15 roxul.

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.

Replies

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

    Karen,
    You need an air barrier on your insulated exterior walls, just as you do on your insulated ceiling. (Uninsulated partitions are another matter.)

    In most homes, the taped drywall is the air barrier on the interior side of your walls. If your insulation consists of spray foam insulation between the studs, however, you don't have to worry about an additional air barrier.

    The usual way to install wainscot is on the interior of the drywall. Then cap the wainscot with a chair rail, and you are done.

  2. Karen Connolly | | #2

    Thanks for the help! On the interior walls is it okay to skip the drywall as long as there is a good air seal between the ceiling drywall and the interior wall framing/top plate?

  3. User avatar GBA Editor
    Martin Holladay | | #3

    Karen,
    Q. "On the interior walls is it okay to skip the drywall as long as there is a good air seal between the ceiling drywall and the interior wall framing/top plate?"

    A. Generally, yes. It's certainly important to seal air leaks at the top of partitions. Air often leaks through the crack between partition top plates and partition drywall. These leaks can be sealed by installing caulk or glue between the drywall and the top plate when the drywall is hung, or by sealing the crack from the attic (usually with canned spray foam) after the drywall is hung.

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |