On 15 Feb 2005 02:51:59 -0800, wrote:


Just to confirm Dave, there is a 2" gap between the wall and the
plaster. The plaster skim itself is less than 1/2" thick. The plaster
has bowed out from the wall into a shape like a big dish or plate
placed against the wall. The plaster is only in contact with the wall
at the edge of the plate. It is cracking no doubt because it is
supporting its own weight and only gripping the wall at the plate edge.

Again, why should that happen? Why did the plaster lose its grip on the
wall? If the problem was with the plaster mix just having it redone
should do the trick...??...

Yes, use multi finish plaster or if you need to put it on as thick as
it was before use bonding coat to float it as most other plaster wont
stick straight to plasterboard. Normaly the plaster would be just a
few mm over plaster board but maybe there is a good reason (bodge?)
why its so thick.

Basil