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OT - Kitchen Ceiling
Howlor - 1/3/10 at 07:57 PM

Evening All,

I just happened to touch my brothers kitchen ceiling on Saturday morning and the full thing came down! Anyway now it's time to put it back up but does anyone know the regs on the plasterboard spec? Does it need to be the fire rated plasterboard or is 12.5mm with plaster slim ok. It is ground floor on a house.

Thanks,
Steve

will121 - 1/3/10 at 08:04 PM

is it a standard house, not flats etc? then unless thing changed thought standard plasterboard ok as things like kitchen doors etc are not fire rated, in flats and integral garages normally have fire ratings

so me bed time reading

[Edited on 1/3/10 by will121]

JoelP - 1/3/10 at 08:09 PM

no fire barrier needed in the ceiling of a normal house, plus normal plasterboard is half hour rated anyway.

OX - 1/3/10 at 08:09 PM

Normal 12.5 tapered edge will be fine ,unless there's an rsj going across the room then that has to be double boarded or a single sheet of the pink fire board



[Edited on 1/3/10 by OX]

Howlor - 1/3/10 at 08:20 PM

Superb Guys, many thanks for your help again!

se7en - 1/3/10 at 08:47 PM

quote:
Originally posted by JoelP
no fire barrier needed in the ceiling of a normal house, plus normal plasterboard is half hour rated anyway.
... but a plastic barrier is needed.

Apparently it stops the condensation getting into the void above the ceiling and causing rot.

zilspeed - 1/3/10 at 08:51 PM

quote:
Originally posted by se7en
quote:
Originally posted by JoelP
no fire barrier needed in the ceiling of a normal house, plus normal plasterboard is half hour rated anyway.
... but a plastic barrier is needed.

Apparently it stops the condensation getting into the void above the ceiling and causing rot.


In a downstairs ceiling ?

I've never a) done it like that or b)specced it like that.

Certainly, a vapour barrier at the external envelope, but not on the underside of an intermediate floor joist.

JoelP - 1/3/10 at 09:10 PM

^^^ sounds odd to me, ive never seen anyone put a plastic barrier over a kitchen ceiling.

OX - 1/3/10 at 09:22 PM

Some of the timber framed flats and houses have plastic sheeting but they also have the ceilings and walls double boarded.
I was told it was just to stop the mice getting in before the boards went on but that could of been a wind up

zilspeed - 1/3/10 at 09:56 PM

quote:
Originally posted by OX
Some of the timber framed flats and houses have plastic sheeting but they also have the ceilings and walls double boarded.
I was told it was just to stop the mice getting in before the boards went on but that could of been a wind up


It would have been.

The plastic sheeting, usually Visqueen, is there as a vapour barrier to prevent internal moisture making its way into the exterior building fabric. There is no reason on to incorporate it within an intermediate floor.

BenB - 2/3/10 at 08:11 AM

Vapour barrier would be needed if the ceiling was going to have a cool void above it (e.g. loft) but not really if it's got a nice toasty bedroom above it.

12.5 taper edge plasterboard should do fine. You won't necessarily need to skim it if the beams are level, just paper and fill the taper with some jointing compound. Have fun with the bubbles