Weathertightness Repairs Done Properly, the First Time

Leaky buildings are one of the most costly problems a commercial property owner can face, and one of the easiest to get wrong if the repair isn't done properly. Oncore carries out remedial building work and weathertightness repairs for commercial and multi-unit properties across the North Shore, addressing the root cause of water ingress, not just the symptoms.

Whether you're dealing with a known leaky building, early signs of water ingress, or a remedial project already flagged by a building report, our team can assess the issue, scope the right repair, and carry out the work to a standard that lasts.

What We Repair

• Leaky building repairs – full remediation of weathertightness failures in commercial and residential-commercial buildings
• Leaky home repairs – for property owners managing weathertightness issues on smaller-scale or mixed-use buildings
• Weathertightness repairs – cladding, flashing, membrane, and junction repairs to stop water ingress at the source
• Water ingress repairs – targeted repair where leaks have been identified but the wider building envelope is sound
• Remedial building repairs – broader structural and cosmetic remediation following weathertightness or building defect issues

Why This Work Needs the Right Contractor

Leaky building repairs aren't a patch job. Get the diagnosis wrong and the same problem resurfaces in twelve months, often worse and more expensive to fix. Oncore's approach starts with understanding where water is actually getting in, not just where the damage is visible, so the repair addresses the cause.

Experienced with commercial and multi-unit buildings. We understand the added complexity of body corporate buildings, shared walls, and commercial tenancies when it comes to remedial work.

Documentation you can rely on. Full scope of works, photos, and reporting throughout the project, useful for insurance, body corporate records, or future building reports.

North Shore based. We know the building stock and common weathertightness issues specific to this region.

Our Process

1. Inspection and diagnosis – identifying the actual source of water ingress, not just visible symptoms
2. Scope of works – a clear, itemised repair plan before any work begins
3. Remedial repair – carried out by experienced trades, with attention to the building envelope as a whole
4. Sign-off and reporting – documentation to support your records, insurance, or body corporate requirements

Concerned About Water Ingress or a Leaky Building?

The earlier a weathertightness issue is addressed, the less it costs to fix. If you're managing a commercial or multi-unit property on the North Shore and have concerns about water ingress or known building defects, get in touch for an inspection.

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Oncore provides leaky building repairs, weathertightness repairs, water ingress repairs, and remedial building work for commercial and multi-unit properties across the North Shore.