After all the drama associated with the ‘leaky homes’ debacle in New Zealand over recent decades, one would think Australia would learn the lesson and practices regarding waterproofing here would be above reproach.

Yet in the Australian Capital Territory at least, recent times have seen a proliferation of construction defects and failures in this area, with outdoor balconies in large apartment complexes being the most common area of concern. One problem area revolves around external balconies on high-rise floors being built on the…