Is plasterboard finish really any good?
sounds like the screws were not properly set or sealed to begin with- probley just poor workmanship. Just so ya know after the screws are put in they need to be sunk in a bit with some pressure - then sealed with mud or patch. I would guess your contractor did that already. ? and are you sure they used screws? i only ask cause sometimes nails are used and they pop causing the problems you mentioned- but the right screw is used it is uncommon that would happen. If you live in a moist area where there is high humidity - it is possible that the plasterboard has expanded a bit pushing the screws out- you can have the humidty levels checked - or you can probley feel if there is excess moisture in the room and maybe that can be cleared up with good ventilation. It is also possible they did not use a long enough screw, or the beam was not hit when it was screwed in- if thats the case then there probley is no remedy except basicly removing all the screws and repositioning them.