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Fire Doors and How They Work

October 27, 2020 | Security & Safety

October is Fire Awareness and Prevention Month and its main goal is to bring awareness to the dangers of fire as well as help individuals and businesses learn prevention techniques that could save lives. 

Common in commercial buildings, fire-rated doors, sometimes referred to as a fire-resistant door, is a unique door type that is specifically designed to slow and prevent the spread of a fire and smoke. Fire doors are often made of fire resistant materials like metal, gypsum, wire mesh, glass or vermiculite. Most fire doors are usually heavier than typical commercial doors. 

Fire doors are typically self-closing and self-sealing to ensure their functionality holds up in case of an emergency. Fire doors have a specific rating system that denotes the strength and durability of each door in the case of a fire. The types typically include: 

  • FD30 which are rated to withstand up to 30 minutes of a fire
  • FD60 which are rated to withstand up to 60 minutes of a fire
  • FD90 which are rated to withstand up to 90 minutes of a fire
  • FD120 which are rated to withstand up to 120 minutes of a fire

For extra protection, fire doors are fitted with what are called intumescent strips which play a part in which rating each fire-rated door achieves. Each of these strips is fit within the frame or the end of the door. If a fire breaks out, the heat activates these strips which then expand and seal the gap between the door and the frame. This helps prevent the spread of the fire to other areas.

The purpose of fire-rated doors is to slow the spread of a fire long enough to allow people the time to get out safely as well as reduce the amount of damage incurred to a property. 

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Jennifer F.
Wyatt B was awesome! Very informative and a pleasure to work with! I will use Vortex again!!
Sean R.
Victor and Skylar were awesome. Thank you
Ron J.
We just had our front doors replaced at Trek Bicycles of Tucson, and we are very pleased with the whole process. John was very professional and took the time to not only explain the process, but made sure the job was done right. Would work with Vortex again, and would strongly recommend to anyone looking to get the job done right.
Robert W.
I could not be more pleased with the 3 commercial doors that were installed this week at my Littleton Office. The front office was so pleasant when calling to get updates and they truly care about the person on the other end of the phone.Daniel was also very professional when bidding the job and came through with everything he promised.Just when I thought he could not go any better Dustin and Corey the installers showed up on time and spent two full days on the install. They made sure everything was square and perfect. As an added bonus the job site was clean, and these guys were not afraid to grab a shop vac and broom for the final clean up.I would recommend Vortex Doors for any business who is looking for a quality product and install.
Whitney T.
Steve and Chris did an Amazing repair!!
Rachel S.
Vortex came out and replaced an old door regulator that was making the door really hard to open. Got it done on the spot, replaced with a new regulator and it works smooth now. Nice people and great work. Thank you!
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