A closed bedroom door acts as a protective barrier by limiting the airflow that fuels a fire. Research has shown that rooms with open doors can quickly become overwhelmed by intense heat and flames, while rooms with closed doors often remain much cooler and experience far less damage. By slowing the spread of fire, a closed door can help keep a room survivable long enough for occupants to wake up and escape.
Why You Should Always Sleep With Your Bedroom Door Closed (It’s Not About Privacy, It’s About Survival)
