The UL (formerly Underwriter Laboratories) has a Fire Safety Research Institute (FSRI) that claims that sleeping with the bedroom door closed reduces the risk of being killed in a fire:
UL FSRI research on fire service horizontal ventilation, begun in 2008, analyzed the effect of doors and windows on a fire’s spread. Bedrooms on the first and second floor of a home were tested during the scenario.
Using thermal imaging cameras, researchers found that closed-door rooms on both floors during the fire’s spread had average temperatures of less than 100 degrees Fahrenheit versus 1000+ degrees in the open-door rooms. “You could see a markable difference that a person could be alive in a room with a closed door much longer,” says Kerber.
They repeat the claim on their Close Your Door Safety Initiative campaign page:
The Close Your Door safety initiative comes as the result of over 10 years of research by the UL Firefighter Safety Research Institute (FSRI). After proving that a closed door could potentially save lives in a fire, UL FSRI has committed to share this finding with the world.
Their research is quoted in many places on the web:
- Should You Sleep With Your Bedroom Door Open or Closed?
- NBC Today news segment (15 Oct 2018 )
- KOMO News
Fox News makes a similar claim, citing a New York firefighter on Facebook.
Does the evidence support this?