The collapse of a ceiling section at Perth's Children's Hospital has been blamed by the construction union on building firm John Holland doing a "rush job" on work to remove asbestos from inside roof panels

The company says it believes the Gyprock plasterboard was damaged in heavy rain on Sunday night but is yet to identify how the water got in, causing a section to collapse. Exclusion zones are in place while work is underway to identify any further damage. A John Holland spokeswoman says…