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....

Still not much of an issue since 12.5mm is feeble enough as it is.

--
Cheers,

John.

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