Building Code and Building Construction - Questions and Answers
Or when you want to know how construction is supposed to be done.

The following Codemen are available to answer your questions:
All Codes and Standards - Jerry Peck, Codeman

Q&A Board links

  • FAQ



  • View New Questions

  • View Unanswered Questions

  • View Active Questions/Answers

  • Mark Questions as read

  • View Your Questions

  • Go To Your User Control Panel

  • Links to:
  • Construction Litigation Consultants

  • Florida Building Commission

  • Florida Building Codes Online

  • International Code Council

  • ICC Codes Free Online

  • Building Officials and Administrators of Florida

  • Product Approvals
  • Florida Product Approval

  • ICC Evaluation Reports Search

  • Miami-Dade NOA Search

  • Inspector and Contractor License Search
  • Search Florida Licenses

  • Technical links
  • Technical Information page

  • Contact Codeman

  • Custom Search

    Exposed Ceiling Insulation

    Exposed Ceiling Insulation

    New postby mtCDCcb on Tue Mar 26, 2019 6:05 pm

    I have a municipal maintenance garage with a mixed occupancy classification of S1 and B. It is going to be sprinklered and unseparated. They are proposing an unfinished ceiling with exposed batt insulation. My question is can they leave this batt insulation exposed? THanks.
    Posts: 84
    Joined: Thu May 26, 2011 11:59 am

    Re: Exposed Ceiling Insulation

    New postby Jerry Peck - Codeman on Tue Mar 26, 2019 8:25 pm

    Faced or unfaced batts?

    Faced batts typically all have warnings not to leave the facing exposed, that the facing must be in contact with gypsum board or other approved material.

    Unfaced batts may have limited or reduced R-value with nothing to restrict the movement of air through the batt insulation, check with the manufacturer's installation instructions. Most codes also require the insulation to be in contact with the ceiling (or floor) unless designed not to be required to be (such as spray foam insulation). Unfaced batts also require a method of keeping the insulation up in place, and that method may need to be addressed (by you and the Fire Marshall).

    Also check with the Fire Marshall as to their acceptance with regard to fire and the fiberglass insulation not being covered.
    Jerry Peck - CodeMan
    Construction and Litigation Consultant - Retired
    User avatar
    Jerry Peck - Codeman
    Site Admin
    Posts: 1166
    Joined: Fri Dec 12, 2008 12:06 pm

    Return to Insulation and structural ventilation (crawlspaces and attics)

    Who is online

    Users browsing this forum: No registered users and 1 guest