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Question:

Is the material inside the fire door gypsum board?

Is the material inside the fire door gypsum board?

Answer:

Not gypsum board. General inside the material is the fire board, steel or cement board, to have a certain fire resistance, flame retardant, can be used as a fire inside the door
Well, it can not be gypsum board, the middle of the fire door generally used fireproof material perlite or cement board, outside the folder 3 points fire board machine pressure imported fire board veneer or metal trim panel edge made. Play the role of flame retardant, delay the burning of the fire time, increase the safety of life only, can not really fire, even the iron can melt Moreover, the plate containing the door it South days diamond fire board for your answer
Can also use rock wool board, foam cement board to do filling
No, it is fire board (perlite).

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