Fire Door Classifications

Fire rated steel doors play a vital role in keeping people safe and minimizing property damage during a fire.

Fire door classifications.

Commercial fire rated doors are widely recognized as the best value in the door industry. If you own a commercial or non domestic property there are strict regulations and guidelines to follow ensuring the doors can withstand certain heats. Most steel doors outlast their wood counterparts by over 10 years are better insulated vandal resistant and longer lasting than wood doors or fiberglass doors. A class d fire door is a 2 hour fire door with a fire resistant core that can withstand an impact test with a mass of 27kg without creating an opening wider than 25mm between the door and frame.

Steel is the sole door material to deliver a 3. Matching steel frame made of 1 6mm thick pre galvanised steel complete with 30mm wide by 48mm deep rebate complete with 5 fixing. Information about nfpa 80 s classifications for fire door assemblies is found in annex d of the standard. Nfpa 80 provides specific guidance on what can and cannot be done to a rated door.

Field modifications of a fire rated door require specific knowledge of the codes and should be performed by a person qualified to work on rated openings. Fire rated door field modifications. They can maintain integrity for two hours and stability and insulation for an hour each. As with the other annexes annex d is included for informational purposes and is not part of the nfpa 80 requirements but it s helpful to understand the purpose of each type of assembly when specifying and supplying fire door assemblies.

These doors typically have a fire resistant core. The six classes. Labeled fire doors control the spread of fire and smoke for up to 3 hours. Allandel class e fire door 44mm thick complete with mdf face finish or a veneer of your choice and hardwood timber edging.

With a class d fire door the stability integrity and insulation rating requires 2 hours with an impact test. Doors to be supplied with a minimum of 4 heavy duty fire rated stainless steel hinges. It is important to confirm that all new components have a label that. In north american building codes it along with fire dampers is often referred.

Worryingly the fire door inspection scheme fdis recently highlighted that three quarters of all fire doors inspected in 2019 were condemned as not fit for purpose. These doors should hold integrity for an hour and stability and insulation for 30 minutes each. Information about nfpa 80 s classifications for fire door assemblies is found in annex d of the standard. Metal fire doors are an economical alternative to wood fire doors when more than a 20 minute rating is required.