Bondi apartment block

The residents of a 1960s apartment block in Bondi were concerned about the condition of their balconies and balustrades. Water was leaking into their units and the balustrades seemed weathered. Despite some repair efforts, the coastal conditions were continuing to cause damage. We were engaged by the Strata Manager (on behalf of the owners) to examine the units and their balconies and balustrades and to recommend how best to repair and rectify the damage.

As part of our inspection, we examined several units within the sizeable apartment block. Firstly, we studied the external window heads, which were part of the block’s concrete frame. We found the imbedded reinforcement was corroding and had caused the concrete to spall or break away – commonly know as concrete cancer. Further investigation revealed the external waterproof membrane had deteriorated, which allowed moisture to penetrate, and ultimately, damage the concrete around the window heads. We then studied the balconies and balustrades. We found aggressive corrosion of the balustrades was causing the supporting concrete to spall or break away. Although safe, the balustrades and the areas around them would require upgrading to fix the damage.

Based on our examinations, we prepared an indicative scope of works for the repair and rectification of the window heads and the balustrades, which could then be applied to all units in a similar condition. We also recommended options for removing and replacing all balustrades with a more resistant (and contemporary) product, to reduce long-term repair costs and to upgrade the external appearance of the entire apartment block, hopefully with resultant benefits for the owners.  

Photograph by Anthony Fowler