A 1mm thick, flexible, sheet of intumescent material. It is not affected by moisture. It is suitable for use behind hinges, steel door closers and around lock areas which require protection on a fire rated door. When installed the sheet compress without compromising its protective qualities.
Hinge, Lock and Door Closer Protection:
Hinges: Remove hinges from both door and frame, cut the cut the Envirograf intumescent paper to size to size, sandwich it between hinge and rebate on both door and frame then screw the hinges back.
Lock & Keep:
Remove lock, cut the Envirograf intumescent paper to size, wrap it around the lock and sandwich it between the lock and door as you replace the lock. Place paper under the keep plate as well.
Before fitting a door closer sandwich pre-cut cut the Envirograf intumescent paper between the closer and the door face then fasten the closer to the door. When ordering state the size of intumescent paper required for your door closer.