Victoria’s state building regulator has concluded that the installation of sub-par external cladding played a key role in the spread of a destructive apartment blaze in Melbourne last year.

The fire that tore vertically through the 21-storey Apartments in Melbourne’s Docklands precinct toward the end of November resulted in the evacuation of over 500 occupants as well as damages worth at least $2 million. Following a review of the Metropolitan Fire Brigade’s (MFB) report on the incident, the Victorian Building…