A nominal fire door is an existing fire door whose fire separation performance cannot be proven, but that is of a suitable build to provide sufficient fire protection. Making a judgement as to whether a fire door will give protection in the event of a fire may not be easy. The following checks can be made to assess the performance of the door:
Door construction – The core material of fire doors can vary greatly and cannot easily be assessed. A solid timber door of at least 44mm of thickness which has no voids or apertures cut out and has been correctly installed and maintained could provide the necessary fire rating. The edges of the door must be lipped with hardwood and should have the correct intumescent seals
Door maintenance – Check the door using our 6-step fire door checker to assess whether the door is properly maintained to fire door standards.
Door alterations – Check whether any alterations have been made to the door including the addition of glazing, letterboxes, ventilation grilles or spy viewers. An alteration such as this increases the likelihood that the door would fail to prevent the spread of fire.
If you are uncertain about whether your door would perform as a fire door, it is often best to consult your risk assessment. If the door is in a key location on an escape route for example, we would recommend that the door is replaced with a new fire door or inspected by a qualified fire door inspector. In a less critical location, you may decide to keep the nominal fire door.
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