Watchdog orders more defects to be fixed in Sydney’s Opal Tower We’re sorry, this service is currently unavailable. Please try again later. Dismiss Normal text size Advertisement The builder and developer of Sydney’s Opal Tower have been ordered to fix defects in the 36-storey building more than two years after residents were forced to evacuate due to cracking. The state’s building watchdog handed formal orders to construction firm Icon and a company linked to developer Ecove on Thursday night due to concerns about incorrectly fitted aluminum shades on the tower’s facade, and defects related to fire-safety in the lobby areas.