Why do firefighters cut holes in the roof of a building on fire?
(back to top) This is called “venting the roof.” There are two basic reasons for this practice. Dangerous superheated gases and dark smoke accumulate in a burning building. Unlike the movie versions of fires, it is impossible for firefighters to see in such an environment or for victims to survive. When a hole is made in the roof, and the building is “vented,” the smoke and gases escape because heat and smoke rise. It increases the victim’s chance for survival and makes it much easier for the firefighters in the building to see. It also reduces the possibility of backdraft (explosion) and flashover. Another reason for venting the roof is to see how far the fire has progressed. One of the fastest avenues through which fires spread is the attic. Heat and smoke rise into the attic where the fire can move quickly. Firefighters may get ahead of the fire on a roof and cut holes to access the attic to stop the fire from spreading through the attic.
This is called “ventilation.” There are two basic reasons for ventilating the roof. Dangerous gases and dark smoke accumulate in a burning building making it impossible for firefighters to see. When a hole is made in the roof, smoke and gases escape because heat and smoke rise. This makes it much easier for firefighters to see. It also reduces the possibilities of backdraft (an explosion of heated gases) and flashover.
This is called “venting the roof.” There are two basic reasons for this practice. Dangerous superheated gases and dark smoke accumulate in a burning building. Unlike the movie versions of fires, it is impossible for firefighters to see in such an environment or for victims to survive. When a hole is made in the roof, and the building is vented, the smoke and gases escape because heat and smoke rise. It increases the victims chance for survival and makes it much easier for the firefighters in the building to see. It also reduces the possibilities of backdraft (explosion) and flashover. Another reason for venting the roof is to see how far the fire has progressed. One of the fastest avenues through which fires spread is the attic. Heat and smoke rise into the attic where the fire can move quickly. Firefighters may go ahead of the fire on a roof and cut holes to access the attic to stop the fire from spreading through the attic.
This is called “venting the roof.” There are two basic reasons for this practice. Dangerous superheated gases and dark smoke accumulate in a burning building. Unlike the movie versions of fires, it is impossible for firefighters to see in such an environment or for victims to survive. When a hole is made in the roof, and the building is “vented,” the smoke and gases escape because heat and smoke rise. It increases the victim’s chance for survival and makes it much easier for the firefighters in the building to see. It also reduces the possibilities of a backdraft (explosion) and flashover. Another reason for venting the roof is to see how far the fire has progressed. One of the fastest avenues through which fires spread is the attic. Heat and smoke rise into the attic where the fire can move quickly. Firefighters may go ahead of the fire on a roof and cut holes to access the attic to stop the fire from spreading through the attic.
This is called “venting the roof.” There are two basic reasons for this practice. Dangerous superheated gases and dark smoke accumulate in a burning building. Unlike the movie versions of fires, it is impossible for firefighters to see in such an environment or for victims to survive. When a hole is made in the roof, and the building is “vented,” the smoke and gases escape because heat and smoke rise. It increases the victim’s chance for survival and makes it much easier for the firefighters in the building to see. It also reduces the possibility of backdraft (explosion) and flashover. Another reason for venting the roof is to see how far the fire has progressed. One of the fastest avenues through which fires spread is the attic. Heat and smoke rise into the attic where the fire can move quickly. Firefighters may get ahead of the fire on a roof and cut holes to access the attic to stop the fire from spreading through the attic.
