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Jun 26 2015

FF: Automatic Flush Bolt

Category: Egress,Fixed-it FridayLori @ 8:38 am Comments (5)

Automatic flush bolts are notoriously problematic, especially when you add the coordinator that is needed for the opening to function properly. If you’re not familiar with automatic flush bolts, sit tight because there’s a whiteboard animation about that topic coming soon!

Jenny Pauley of Kendell Doors sent me this Fixed-it Friday photo of a non-code-compliant repair that was made because the top corner of the fire door split. This is pretty common when corner-wrap flush bolts are used, because of the amount of wood that is removed (here’s another example).

Auto Flush Bolt Repair

To avoid problems with auto flush bolts and coordinators, I recommend a two-point latch (or a latch at the head only) for each leaf whenever possible.  This allows each door to operate independently using the lever handles, and the coordinator is not required.  Schlage’s LM9200 two-point latch can be used on wood doors rated up to 45 minutes with 2-point latch, or 20 minutes with top latch only.

And in other Fixed-it Friday news, the doors in last week’s photo have been repaired!  Rachel Smith of Karpen Steel contacted the town manager and here’s a new pic!  I know it’s overwhelming to think about trying to fix every door problem we see, but what if we didn’t and tragedy occurred?  Great job Rachel!

All Fixed

5 Responses to “FF: Automatic Flush Bolt”

  1. Bill says:

    Is there a reason we can’t use the Extension rod style Auto Flushbolts (normally used in metal doors) in a wood door?

    • Lori says:

      Hi Bill –

      As long as the door listing and the flush bolt listing allow it, it’s fine. I’ve specified extension rod flush bolts on wood doors hundreds of times.

      – Lori

  2. Jerry Richmond, AHC/CDC says:

    I do not like the usual corner mounted wood door flush bolts- they split like crazy! They do generate additional replacement door sales, though.

    I specify Rockwood (sorry, Lori) model 2962 flush bolts with 1-1/2″ backset. I have never had to replace an inactive leaf using this bolt.

  3. Bryan McKeehan says:

    Is that pair of doors completed? I ask because it appears as if not! The gap between the doors is horrendous. Unless the frame sags in the middle there is no excuse for such shoddy installation work!! Have the installers heard of shimming hinges?

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