At a house fire, why are the windows broken or holes cut in the roof by the firefighters?
A fire moves in all directions as it builds in intensity. Hot, explosive smoke and gasses are produced that could explode or spread the fire quickly. “Controlled” breaking of the windows and cutting holes in the roof by firefighters–known as “ventilation”–decreases those possibilities. It may not look like it, but it is a safer way of fire fighting and causes a lot less damage in the long run.
