Ive just realised that I have fixed three of four plasterboard ceiling
panels at 900mm centres totally forgetting to fix the cross pieces at
the 450mm midway points as I intended .I was so keen to get on with it
..
The PB is the 9.5mm thickness and the width of the room is 53 " .
I used screws at the joins and round the perimeter .I'm just taping
the joins so there is no extra weight other than a couple of
lightweight lamps which are screwed to the cross pieces .

Will this be OK .It seems to be all right ....?...I'd prefer to avoid
taking the panels down again .


Stuart