plasterboard thickness

[astromex]

Im doing up my bathroom and have hacked off the old plaster & pva'd on two brick walls, the other two are internal and will be plasterboarded along with the ceiling which I will plasterboard over the existing lathe & plaster.

My question is what thickness of plasterboard should I use? Wickes has 9.5mm and 12mm in 1200x2400 sheets that I was planing to buy, but is one thickness better for what im doing than the other?

Thanks

 

[jbonding]

go with the 12.5 they are stronger and dont bend as much, if your dabbing they near enough stay flat and if your over boarding they make the ceiling a lot flatter, if flatter is a word, it must be the misses always says dont flatter me

 

[astromex]

Thanks for the advice