On 30 Jan 2021 at 09:45:13 GMT, ""Jimmy Stewart ...""
wrote:

On 30/01/2021 09:32, Roger Hayter wrote:
On 30 Jan 2021 at 08:11:52 GMT, ""Jimmy Stewart ...""
wrote:

On 30/01/2021 06:06, jon wrote:
On Fri, 29 Jan 2021 16:00:17 +0000, Jimmy Stewart wrote:

On 29/01/2021 15:46, Brian Gaff (Sofa) wrote:
Cannot see it but to my mind once the room is alight enough to cause
that sort of need you are pretty stuffed anyway and should be in the
street with your mobile waiting for the fire engine.
Brian

but one hour FR gives the people on the floor above time to ext.....

What people on the floor above ?

why have a FR ceiling then ? ....

If it delays the roof timbers catching fire this may be useful.

roofs don't attract a requirement for fire resistance.....unless an
escape route is over them....

There may be no requirement, but I'd generally prefer mine not to be on fire
given a choice.

--
Roger Hayter