In article ,
says...
Use 6X3 plasterboards or 4X3, don't attempt to use 8X4's, and whichever you
use, make sure someone is with you when you put them up.

Going with 4x3 9mm, they fit in the car and will be easier to hold up.

Seeing as she stepped through the ceiling, I now have two visible joists
to start with and measure centres from. Will mark walls etc, but at
least I have two go with as starting refences to measure from..
--
Carl Robson
Car PC Build starts again. http://smallr.com/rz
Homepage: http://www.bouncing-czechs.com