How Do Fire Doors Work?

A fire door is a kind of enclosure or a door which is used a fire protection device within homes and offices to thwart the spread of fire. Fire doors are made of a combination of materials like gypsum, steel and vermiculite boards. In fact if one has a fireplace, then it is recommended to invest in a glass fireplace door.

Fire doors are instrumental in acting as a barrier between your home and chimney. Glass fireplace doors can withstand a good amount of heat. Some fire doors have internal windows which may include a wire mesh glass or liquid sodium silicate fills between two window panes to work well and provide a formidable resistance against fire outbreak. While the wired glass can resist fire, the sodium silicate liquid acts to diminish the spread of heat. Ceramic glass fire doors are highly heat resistant and more on the expensive side compared to tempered glass.

A fire door is a type of door, or barrier used as a passive fire protection item within buildings to prevent the spread of fire or smoke which may consist of dangerous chemicals. It is usually the only means of allowing people to pass through a fire-resistance rated wall assembly.
 
Fire doors are made of a combination of materials, such as:
 

 
• timber

 
• steel

 
• Gypsum (as an endothermic fill)

 
• vermiculite-boards

 
Together, these components form a system which holds the rating.
  Fire_door 

From Wikipedia, the free encyclopedia, retrieved 0ct. 6, 2008

Its a door that stops fire

Fire doors help people

Actually fire doors don't stop the fire but prevent the fire from spreading.

You are funny guys, good job

By shutting off Toast from the rest of the Toaster

Well, the thing is when a fire starts the door automatically close and you get locked in with the fire burning you to a crisp