In 2011, it was reported that the repair work is necessary to restore the fabric of the building, in particular the bell tower, which has become unsafe. Some of the sandstone from the 1800s has not weathered well and shows extensive fretting and disintegration, while early brickwork, decorative stained glass windows and copper and slate roofing also need repairs. In addition there is rising damp in the south-west corner of the cathedral and concerns about sub-floor ventilation. A public appeal was launched with expectations of raising A$2.5million with the work to be completed by 2015 when the diocese celebrates its sesqui-centenary and the city its bicentenary.