A fire door is a door with a fire-resistance rating (sometimes referred to as a fire protection rating for closures) used as part of a passive fire protection system to reduce the spread of fire or smoke between compartments and to enable safe egress from a building or structure or ship. In North American building codes, it, along with fire dampers, is often referred to as a closure, which can be derated compared against the fire separation that contains it, provided that this barrier is not a firewall or an occupancy separation.
Door hardware includes, but is not limited to:
Automatic closing devices/objects
Ball bearing hinges
Positive latching mechanism
Single Fire Door
Most fire doors are designed to be kept closed at all times. Some doors are designed to stay open under normal circumstances, and close automatically in the event of a fire. Whichever method is used, the door’s movement should never be impaired by a doorstop or other obstacle. The intumescent and smoke-seal bounding of fire doors should be routinely checked, as should the action of the door closer and latch.
Some fire doors are held open with an electromagnet, which may be wired to a fire alarm system. If the power fails or the fire alarm is activated, the coil is de-energized and the door closes on its own. Wireless, battery operated fire door retainers can also be used to safely and legally hold fire doors open.
Rated fire doors are tested to withstand an ASTM E119 standard time-temperature curve for a specified period. There are 20, 30, 45, 60 and 90-minute-rated fire doors that are certified by an approved laboratory designated as a Nationally Recognized Testing Laboratory (NRTL, e.g., Underwriters Laboratories). The certification only applies if all parts of the installation are correctly specified and installed. For example, fitting the wrong kind of glazing may severely reduce the door’s fire resistance period.
Double Fire Door System
Constructed from thermally broken narrow and filled with a proprietary fire blocking material, Aluflam’s storefront hinged and are available in 30, 45 and 60 fire resistance ratings (for our hinged doors, 90 and 120 minutes are also available in addition) and in classifications E, EW, EI for both interior and exterior installations. They are fully tested and listed by a number of NB European laboratories and EN standards as well as UL listings. All Aluflam fire-rated products are approved for use anywherre in the world.
Designed with a minimum visual obstruction in mind, our standard 2,5 x 2,5 m sizes offer nearly 5 m2 of clear vision. Our door frames also line up and lock together with our storefront wall and window systems. Doors and frames are factory finished and fabricated complete before delivery — reducing installation time.