New ceiling?

[Ell]

Just bought a new house a few weeks ago, and the bedroom ceilings are either bowing or are completley shot! i've been told they need re-boarding, but need to be battened out with 3 x 2 wood first. Are nails or screws best and is it important to get a joiner to do this or could two novices do this? as I have been waiting about 2 months for a family friend who is a joiner to do it, with no look!

 

[splinter]

Is the house you have bought newly built ,
if so the ceilings should not bowing or shot.
If it is an old house,the ceilings might be lathe and plaster.This can tire over the years and might be you're problem .