The emphasis on life safety and property protection has never been greater than it is today. Fire Rated doors play a very important role in the fire resistance of a building.
Fire Rated doors are required to provide adequate resistance to the passage of smoke and other combustible materials during the early stages of a fire and secondly to provide a barrier to a well-develop fire without permitting fire and excessive quantities of smoke to pass.
Metro Therma Doors, is a symbol of excellence in quality door construction and functionality.
A temperature rise rating shown on a fire door label is in addition to the fire protection rating. it indicates the maximum temperature rise, above ambient, developed on the unexposed side of the door at the 30 minute point of a standard fire test. The fire door’s temperature rise is designed to provide protection whenever fire and radiant heat transfer needs to be minimized.
It is typically specified for stairwell enclosures to provide a safe path of egress from high temperatures generated in a fire.
Positive Pressure testing is the new method of testing fire doors by simulating real fire conditions. As heat develops within the source area, pressure inside begins to build up; therefore smoke, hot gases and flames are forced through any openings in the door assembly.
Metro Therma Door is positive pressure tested for 3 hours with 450°F temperature rise
Before the Test
During the Test
After 3 hours
Hose steam test
After hose steam test