Drilling raceways for wires on the job site when permitted by the laboratory with which the door is listed must also be performed in accordance with the door manufacturer s listing.
Drilling holes in fire doors.
You can drill up to a one inch hole in the surface of the door for surface applied hardware such as a listed peephole or lock cylinder.
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However there is a fire door caulk that has been successfully tested and listed for that purpose that can be used with ahj approval.
Fortunately there are two methods to seal small holes caused by the removal of hardware.
Note that the modifications may be done only to install approved fire labeled hardware.
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5 5 7 when holes are left in a door or frame due to changes or removal of hardware or plant ons the holes shall be repaired by the following methods.
Installers are permitted to drill holes in fire rated doors.
Replacing a fire door is a costly endeavor especially when there are only small holes located in the door.
Exterior locksets commonly have a 2 and 3 4 inch backset.
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Most interior locksets have a 2 and 3 8 inch backset.
Here are some things you can do to a fire listed door in the field.
Go to nfpa 80 fire doors and fire windows 1999 edition and check out paragraph 15 2 5 4.
A maximum of undercut on rated wood and composite doors is allowed.
With regard to filling holes in fire door assemblies nfpa 80 2013 states.
The backset is the distance from the edge of the door to the center of the giant hole you drill in the face of the door.
Here s what nfpa 80 says about filling holes in fire doors 2007 and 2010 editions.
You can attach signs but such signage cannot be applied with screws or nails.
Nfpa80 2016 4 1 3 1 thru 4 1 3 2 5.
1 install steel fasteners that completely fill the holes.
All mounting screws or bolts must be made of.
The 2013 edition of nfpa 80.
This practice is acceptable as long as the hole does not exceed a diameter of one inch except for cylinder holes in accordance with nfpa 80 1 3 4.
A 1 1 see annex k for general information about fire doors.
This standard regulates the installation and maintenance of assemblies and devices used to protect openings in walls floors and ceilings against the spread of fire and smoke within into or out of buildings.
To know where to drill this hole from the edge of the door you need to know the backset of the lockset.
5 2 15 4 when holes are left in a door or frame due to changes or removal of hardware or plant ons the holes shall be repaired by the following methods.
A change was made to the 2016 edition of nfpa 80 clarifying that materials listed for filling holes in fire doors are acceptable when installed per the manufacturer s procedures.
1 install steel fasteners that completely fill the holes.
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Under that paragraph you can fill in holes caused by.