Fire rated door assemblies play an important role in saving lives and minimizing property damage by providing safe egress and compartmentalizing smoke, flames and when required, dangerous radiant heat. This is a combination of the door, frame, hardware and glazing working together as one assembly. These components are normally tested as separate products by a nationally recognized testing agency and then listed, labelled or classified for use in fire door assemblies. However, there are instances where specific components are tested together, and therefore must be used together in order to maintain the fire rating.
The basic requirements for fire rated door assemblies include:
Fire ratings (20/45/60/90/180 minutes) are granted by third-party testing agencies and are labeled on the products.
Fire rated door assemblies must meet the requirements of the applicable building or life safety code, such as the National Fire Protection Association (NFPA) 80: Standard for Fire Doors and Other Opening Protectives, NFPA 101: Life Safety Code, the International Building Code (IBC) and the International Fire Code (IFC).
Fire doors are required to be self-closing and positive latching.
The fire rating of the wall dictates the fire rating of the door.
Standards and Testing
Fire rated doors are tested in accordance with the following standards:
UL 10B, Fire Tests of Door Assemblies (neutral or negative pressure)
UL 10C, Positive Fire Pressure Tests of Door Assemblies
NFPA 252, Standard Methods of Fire Tests of Door Assemblies