"John Rumm" wrote in message
...
Mike wrote:

400mms is ok for 12.5mm plasterboard but you must use 300mm centres if
you
use 9.5mm plasterboard

I was always told that you can do 400 for 9mm but get away with 600mm
with 12.5mm....

Yeah - so was I. Then a friend met a BCO with other opinions and although a
question here gave varied replies, there was no definitive source. Since
then me and him have played safe and used more wood.