Most people believe they will wake up in time if a fire starts in their home. Unfortunately, modern fires grow faster and hotter than ever before-often leaving only minutes or even seconds to escape. In a modern residential fire flashover can occur in as little as 3-5 minutes, visibility can drop to zero rapidly, and toxic smoke can render occupants unconscious quickly. 

One simple action can dramatically increase your chances of survival: Close your bedroom door before going to sleep. 

Today's homes contain more synthetic materials-furniture, mattresses, carpets, and plastics-than homes built decades ago. these materials burn faster, produce more heat, and release thick, toxic smoke. 

When a fire starts elsewhere in the home: 

  • Open doors allow fire, heat, and smoke to spread rapidly
  • Fire growth accelerates due to increased oxygen
  • Smoke quickly fills hallways and bedrooms, even before flames arrive
A closed door helps disrupt this process. 

 
Closing your bedroom door creates a temporary fire barrier that can: 

  • Slow the spread of flames
  • Reduce heat entering the room
  • Limit toxic smoke exposure
  • Preserve breathable air
  • Lower room temperatures dramatically
Fire testing has shown that a closed door can keep bedroom temperatures hundreds of degrees cooler and oxygen levels survivable for much longer.