Fireproofing Ceilings and Cavity Insulation

[Gareth Jones]

Hi All

I have just had a detached garage built with a room above and need t fireproof the garage ceiling and stairs. I was told by the building inspector to use two layers of plasterboard, but will one layer o Fireline plasterboard do the same job?

I also want to fit cavity insulation, what types can be used now tha the walls are up and roof on. If I use one of the blown-in types, ho do I seal the cavity tops bearing in mind that the inner block leaf i around two courses higher than the outer brick leaf?

Cheers

Garet

-- Gareth Jones

[in2minds]

I have just had a detached garage built with a room above and need to

no, he means 2 layers of Fireline

LJ

[Lobster]

Are you sure? When I had to do some fireproofing (in a different application, admittedly) the BCO also specified two layers of plasterboard (plus a layer of skim plaster); but just normal plasterboard; and he subsequently signed off the work happily.

David

[Set Square]

Isn't it a bit late to be sorting this out, *after* it has been built?!

[sploop]

[in2minds]

yes, according to our local BCO if there's a habitable room over a garage there has to be 2 layers of fireline (fire resistant) plasterboard

LJ

[in2minds]

ooops, missed the "detached" bit, it may not apply to a detached garage only one way to find out for sure, ask the BCO

LJ