It is important to remember some key points when installing a fire door.
The doors must be fitted with a required gap between the door and the frame. Too large of a gap and the door would not withstand the smoke or vapour which the door would need to help guard against. Usually the gap should not exceed 3mm along the 2 edges across the top of the door leaf. At the bottom it should be no more than 10mm or 3mm when smoke seals are specified.
Any glass needs to be the right type! If a glass panel is part of a fire door, a special glazed glass needs to be used. This is to ensure consistency in the doors ability to guard against fire.
The frames need to meet a strict standard too. In the past the habit of installing a standard frame to host an after-market fire door is most certainly not going to pass as a fire door today. The frames now need to be installed by a firm licensed to install them, such as SWD. They need to be a hardwood with a density greater than 650kg/m3 (for a 60 minute fire door).
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