1 Incorrect selection of fixing
2 Incorrect installation of fixing
3 Additional load applied
4 Insufficient number of fixings
5 People walking/crawling on ceilings
6 Failure to follow manufacturers guidance/instructions
7 Modification by other trades
8 Insufficient supervision/training
9 Structural vibration causing fixings to fail
10 Substitution of specified components
Source: FIS member survey 2010