fire door lockset

[Guest SteveNeedsAnswers]

Should all lockset latching keeps which have voids be intumescent protected as standard compliancy? I have come across numerous chiselled out keeps which must surely present as fire barrier breaches

[Neil ashdown]

The lock keep should be tightly morticed into the door frame stile or secondary door leaf so that there are no gaps or voids.  Intumescent gasket material is usually required for FD60 doors and sometimes for FD30, the door data sheet should provide the necessary information.