Most balcony leaks aren't a maintenance issue, they're a construction failure. At ERC, we don't just patch the problem. We diagnose the cause, strip it back, and waterproof it correctly using proven membrane systems. No shortcuts, no callbacks.

The majority of balcony leaks in Sydney apartments come down to the same issues — inadequate waterproofing at installation, failed membranes, poor drainage falls, or deteriorated flashings. Left untreated, water gets into the slab, causes concrete spalling, damages ceilings below, and creates strata disputes.

We've seen it all. We know exactly what to look for and how to fix it.