GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Drywall above stud wall framing good for fireblock?

krackling | Posted in Building Code Questions on

First off, the website has been a wealth of information and a great help so thank you. I’m in the process of finishing my basement and have put 2″ XPS in the rim joist section and plan to follow-up with 1″ XPS on the interior walls followed by the framing in-front of that. For a fireblock, is 1/2″ drywall safe in the basement to attach to the joists and then butting the top of the XPS against along with the top plate of the stud wall? I assume this would be an acceptable fireblock but not sure if the drywall would be a safe bet. I’m already halfway through installing the drywall for this but haven’t yet put the foam or framing in and having second thoughts.

Picture is worth a thousand words… see below

View post on imgur.com

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. GBA Editor
    Martin Holladay | | #1

    Jason,
    As far as I know, the 1/2-inch drywall will work -- but it never hurts to contact your local code enforcement official to find out whether local interpretations differ from my advice.

    The image below shows a standard fire blocking detail.

    .

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |