What Is A Fire-rated Door?

- May 30, 2019-

A fire-rated door — or fire-resistant door — is specially constructed to slow or prevent the spread of fire and smoke, according to Ken Canziani, Senior Fire Investigator at EFI Globalin Sacramento, CA.

“A fire-rated door is a very heavy door made of materials like metal or gypsum,” Canziani explains. “The term ‘fire-rated’ means that the door, when installed properly, is not supposed to combust during a certain time frame in the average fire.” While time ratings vary, he says standard ratings include 20- to 90-minute doors.

Fire-rated doors are more common in commercial buildings than in residential structures. “Fire-rated doors are often installed in public buildings, in office buildings and in places like dormitories,” Canziani says.

Typical residential applications include installation in entryways, garages and multi-family homes.