Ceiling with 9.5 or 12.5 plasterboard?
- Thread starter swilli88
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- ceiling plasterboard
D
dontbelieveawordofit
12.5 if you can. doesn’t really matter though.
A staircase is not an element of structure as defined by part B, fire resistance would only be required if the stairs were part of a protected route for means of escape and the WC was entered from a room outside the protected stairway.
It's not always about what is required, but what is right.
The other benefits of a thicker board, eg sound attenuation from a toilet and general rigidity, make it worthwhile.
There's a reason why it does not require fire resistance in this situation, its a pointless exercise fire protecting the soffit of a combustible stair.
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12.5mm for all you need. Much more robust than 9.5mm.
Normally it's to stop the stair combusting before you've had chance to use it.
9.5mm it's hard to find.
I personally only use 12.5mm, especially to prevent cracking when transported.
I personally only use 12.5mm, especially to prevent cracking when transported.
D
dontbelieveawordofit
9.5 is not hard to find. B&q sell 1800x900 handiboards.
its lighter, easier to shape and handle , particularly in an enclosed environment and overhead.
i’d use 12.5 as theyre more rigid and i’d be more likely to have some left over from a job.
its lighter, easier to shape and handle , particularly in an enclosed environment and overhead.
i’d use 12.5 as theyre more rigid and i’d be more likely to have some left over from a job.
Don't shop in b&q, they seem to be very expensive, or at least they were when I went there sometimes years ago.
I don't do a lot of tacking, but am doing a job for a friend at the moment. Being an old house the studwork isn't the straightest. He had a few sheets of 9.5 and 12.5 for the rest of the room. Although I would normally use 12.5 I found the 9.5 a lot easier to use where the studwork was well out.