Remedial Waterproofing
Waterproofing doesn’t last forever — and when it fails, the consequences can be serious. Instant Waterproofing provides specialist remedial waterproofing services to repair failed systems and extend the life of buildings and structures.

Our remedial process often involves preparation works to remove defective membranes, coatings, or damaged substrates before new systems can be applied. This may include:
• Concrete grinding – to smooth surfaces, remove contaminants, and prepare substrates for new waterproofing.
• Concrete cutting – for precision access, joint preparation, or removal of damaged sections.
• Jackhammering – to break up defective screeds, tiles, or deteriorated concrete prior to repairs.
Once the substrate is properly prepared, we install the most suitable waterproofing system for long-term durability.
We work with a wide range of remedial methods, including:
• Membrane removal and replacement – stripping back defective systems and applying new, compliant waterproofing.
• Over-coating solutions – applying compatible membranes over existing systems to restore integrity.
• Injection resin repairs – sealing active leaks in concrete, basements, and retaining walls.
• Joint and crack sealing – restoring watertightness in expansion joints, penetrations, and cracks.
Typical remedial projects include:
• Balconies and rooftops with failed membranes
• Basement leaks and rising damp issues
• Strata and apartment waterproofing failures
• Commercial podiums, planter boxes, and retaining walls
We understand that remedial work often involves occupied buildings, so we take care to minimise disruption, maintain safety, and work closely with builders, strata managers, and property owners.