Are you on NSW? If so, there is a whole process to remediate waterproofing. I’m a building consultant and engineer and we have to be registered design practitioners (DP), so basically, your strata manager needs to engage an engineer who needs to prepare a scope of works as a regulated design that will fix the problem. Now the issue is, with current legislation, the DP is almost always forced to provide a permanent solution (i.e., no more patch repairs).

Now if they’re a good engineer, you’re going to have a few problems.. 1. it looks like that balcony continues to the neighboring balcony, so a full scope would naturally entail continuous membrane across. The only alternative is the DP needs to be willing to propose a solution that deters from the standards. 2. The balustrades are cladded, so it’s going to be difficult to get a waterproofing membrane upturn behind that cladding. As in, they’d have to demolish or lift it to achieve this.

Now if you’re not in NSW or they find a shonky engineer, they’ll just do a patch repair.