House Fire doors and carpet.

[Geo]

Hello all,

In my house I need to have firedoors. The two floors of the building have carpets and under the door metallic stripe. ( I don't know if the carpets have the related BS standards.) 

Based on firedoor's manufacture's manual the gap under the door should me maximum 10mm from the floor.

As I can see on the manufacture's manual with the tests of the door they do not have any reference for carpets. 

Should I consider the carpet as floor or the metallic strip? or the unfinished floor? 

Any Idea what is appropriate and/or minimum requirement? 

thank you 

 

[Neil ashdown]

Sections 2.4 and 4.4 of this document  https://www.falconpp.co.uk/media/32386/fpp-im-1401-installation-of-fire-rated-doorsets.pdf   cover the subject of the gap under the fire door leaf.

[Tom Sutton]

As far as I can remember the guidance referred to the unfinished floor  but if carpet is laid up to the door then this is unpractical I would suggest you use the metal strip because the pile on the carpet should allow the door to open and close satisfactory.