The main concern with ceilings is loud noise
from above. Acoustic control methods are very similar
to those for walls.
One method of control is to install a secondary ceiling by adding insulation and battening out Barrierboard acoustic gyprock (see walls).
If walls are adequately insulated but the ceiling
is not, cross-talk can be an issue. Cross-talk is
the noise that travels over the wall through the
ceiling, which is the weakest link. Soundblock barrier
material can be used to address this common problem.
It is also suitable for ceiling voids in offices.