Intumescent lockset keep protection

[Guest Steve R]

With regard to the voids created when installing a lock keep, should it not be a case that all such fixings should incorporate intumescent protection? 

[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.