Plasterboard on Garage Ceiling

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Stevewils

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Although I'm a diyer, I am posting this in the professional section as I am keen to get the correct answer.

We are having a bedroom built above the garage, that also extends out the front of the garage to create a small car port.

My question is what type of plasterboard would building control want on the garage ceiling, and what type on the car port ceiling? If it makes a difference I will be using Celotex as inslulation.

Everyone I speak to (none of them really experts) have a differing opinion, from two layers of fire board, to put what you like on it. Has anyone been in something similar and what have you done?

TIA

Syd.
 
Normally double board with standard 12.5mm boards , you can use fireline board single i think and using there tube filler cant remember the name for any holes around edge and joints in boards prior to skimming , i think double boarding with normal board is better staggering the joints :-)
 
1 layer of 15mm fireline, caulked round the edges with intumescent mastic and skimmed should be sufficient.
 
Best bet I would ring your local building control and do as they say, they're prob say double fire line board and maybe intumescent sealant around the perimeter , like I say ring your LOcal authority as they all say different things.
 
Ive just done a few. All have been celotex between joist and single skin of fireline plasterboard. Skim finish.
On the car port a cement board (cant remember other name) with stainless screws. This is often left as a finish
 
Bet the OP is pleased he came on here for a straight answer............................:RpS_laugh:
 
Artisan998 said:
Bet the OP is pleased he came on here for a straight answer............................:RpS_laugh:
Click to expand...

I did get the answer I required.

I just wanted an idea of what was generally fitted before contacting building control, to make it sound like I knew what I was talking about (even if I don't).

Thanks to all for their replies, much appreciated.

Syd.
 
A customer's neighbour was saying they had a treated length of wood put inside a new steel lintel in their house to attach board to but it was some sort of fire treated. She said that in the event of a severe fire it would give you more time before the lintel melted.

This sounds crazy to me. If you've got a fire raging in your house so hot its going to melt the lintels surely you're ****** anyway?
 
Easier to stick them with a bit of bonding compound, spose the thinking behind it is if your lintel melts the front of the house will collape, if it's a detatched garage might be less important.
 
raytheplasterer said:
Easier to stick them with a bit of bonding compound, spose the thinking behind it is if your lintel melts the front of the house will collape, if it's a detatched garage might be less important.
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yes sorry. i didn't mean for the garage it just reminded me. Didn't make sense that's all. If it's so hot the lintels melt I don't really see what a length of wood is going to do whatever its treated in
 
yeah, maybe they used the wood to attach the board to, but your right treating the wood would'nt make much difference, one site agent told me the reason behind it was incase the car spontaniously exploded while it was in the garage.:RpS_biggrin:
 
Ive heard that one before ray , jess the lintels get boarded to hold the fire back from the lintel thus giving it more time before it got to melting point , once its ****** the boards the timber wouldnt do jack **** to help by that time ........
 
JessThePlasterer said:
A customer's neighbour was saying they had a treated length of wood put inside a new steel lintel in their house to attach board to but it was some sort of fire treated. She said that in the event of a severe fire it would give you more time before the lintel melted.

This sounds crazy to me. If you've got a fire raging in your house so hot its going to melt the lintels surely you're ****** anyway?
Click to expand...
If you want to treat a length, give me a shout
 
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