Results 1 to 7 of 7
  1. #1
    Join Date
    Sep 2008
    Location
    so so, California
    Posts
    1,769

    Default Fire blocking or Draft stopping

    Looking for the correct term to use here. From my days as a track rat we called it fire block. Just want to clear this up and get my terms correct in my head.
    Image as example.
    From IRC 09
    Fireblocking. In combustible construction, fireblocking shall be provided to cut off all
    concealed draft
    openings (both vertical and horizontal) and to form an effective fire barrier between stories, and between a top story and the roof space.

    DRAFT STOP. A material, device or construction installed to restrict the movement of air within open spaces of concealed areas of building components such as crawl spaces,
    floor-ceiling assemblies, roof-ceiling assemblies and attics.





    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Inspection Referral
    The MAZZA INSPECTION GROUP
    www.mazzainspections.com
    Level III Thermo-picture-taker-er...er

  2. #2
    Join Date
    Mar 2007
    Location
    Succasunna NJ
    Posts
    574

    Default Re: Fire blocking or Draft stopping

    Your photo requires fire-blocking.

    Picture a house framed with open web trusses with a floor area of 1,200 sf. Draft-stopping is then required to close off the open truss somewhere near the center to divide the 'open' space between the floor and the ceiling into 2 (two) 600 sf areas.

    Darren www.aboutthehouseinspections.com
    'Whizzing & pasting & pooting through the day (Ronnie helping Kenny helping burn his poots away!) (FZ)

  3. #3
    Join Date
    Sep 2008
    Location
    so so, California
    Posts
    1,769

    Default Re: Fire blocking or Draft stopping

    Needed that visual, thanks so much.
    -marc

    The MAZZA INSPECTION GROUP
    www.mazzainspections.com
    Level III Thermo-picture-taker-er...er

  4. #4
    Join Date
    Mar 2007
    Location
    Succasunna NJ
    Posts
    574

    Default Re: Fire blocking or Draft stopping

    The most common area I see missing fire-blocking is when a basement is finished with wood studs. The 'concealed' space between the back of the wood studs and the foundation wall AND at the top 'between concealed vertical and horizontal spaces'.
    The fire-stopping vertically must be at the ends and every 10 feet, Remember, this would NOT apply if metal studs were used.

    This wall is missing fire-blocking.

    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Darren www.aboutthehouseinspections.com
    'Whizzing & pasting & pooting through the day (Ronnie helping Kenny helping burn his poots away!) (FZ)

  5. #5
    Join Date
    Aug 2009
    Location
    Michigan
    Posts
    249

    Default Re: Fire blocking or Draft stopping

    The materials used can be different. Fireblocking is normally 2x material or some combination of 1x wood. It can also be fiberglass or mineral batts used between studs.

    Draft stop is really just cutting draft or air movement. Usually from drywall or plywood materials -(not always to resist fire, just subdivide areas). Like an attic or floor space to reduce a large area into smaller areas. While you can also use fiberglass, it's really not used much hear, just because attachment would be too difficult.

    Fireblocking is really for small areas between studs, framing etc. Draft stop is for large areas attics, trusses, floor systems etc... hope that helps.

    Randy Gordon, construction
    Michigan Building Inspector/Plan Reviewer

  6. #6
    Join Date
    Sep 2008
    Location
    so so, California
    Posts
    1,769

    Default Re: Fire blocking or Draft stopping

    Cool, thanks. Just using the wrong terminology.

    The MAZZA INSPECTION GROUP
    www.mazzainspections.com
    Level III Thermo-picture-taker-er...er

  7. #7
    Join Date
    Mar 2007
    Location
    Succasunna NJ
    Posts
    574

    Default Re: Fire blocking or Draft stopping

    Look what I found on my computer!

    Attached Files Attached Files
    Darren www.aboutthehouseinspections.com
    'Whizzing & pasting & pooting through the day (Ronnie helping Kenny helping burn his poots away!) (FZ)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •