Fire doors in listed buildings

[Diane Hunter]

Hello everyone.

I'm struggling with reducing the gaps under our fire doors and would really like some advice on what we can do to make us compliant. 

The building I'm responsible for is a 19th Century Manor house and with old buildings the floors are not flat and often slope. We have one door for example that has a gap of 10mm one side & 30mm, however as the floor slopes, if I added a strip to the door it would prevent the door from fully opening as it would get caught on the floor.

Has anyone had experience with old buildings & come suggest a solution for the above?

[Neil ashdown]

Very challenging without remediating floors or fitting a threshold plate under the door.  Both of which may not be practical in some cases. 

Start by consulting general advice at:  https://historicengland.org.uk/images-books/publications/fire-resistance-historic-timber-panel-doors/