You may feel that it is safer to leave bedroom doors open in the middle of the night because it makes evacuating your house easier, but it actually allows smoke and fire to rapidly spread. Doors, even hollow bedroom doors, can hold back an incredible amount of smoke and fire. In the event of a bedroom fire, it is best to close the door and evacuate the home. This will keep the fire in one place longer and give you and your family more time to evacuate. Check out this video published by Underwriters Laboratories (UL) to see for yourself.