Is there any reason why you want a false ceiling?Why not just board over the
old one.Mark where all the joist's are around the wall so you can see them
when the new board goes up,and just use longer screws or nails.
scezy
"Séan Connolly" mrcATseanDASHconnollyDOTcoDOTuk wrote in message
...

Sorry, I forgot to mention that I intend to plasterboard and plaster the
ceiling after I get the timber structure in place.

Can't see why this wouldn't work then....