Petersham Project
Remedial Waterproofing Sydney
From leaking balconies and failing roof membranes to facade waterproofing and bathroom failures, Metro Remedial delivers full-scope waterproofing and remedial repairs across metropolitan Sydney. From $10K targeted repairs to $5M full rectification.
- In Business
Since 2011 - DBP Act
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Our Clients
Our clients include both government and non-government agencies.
Waterproofing Solutions That Address the Cause, Not Just the Symptoms
A leaking balcony, roof or planter box is rarely just a waterproofing problem. Water can travel significant distances before it becomes visible, making it essential to identify the source of the failure before repairs begin.
At Metro Remedial, we specialise in remedial waterproofing for residential, strata, commercial, government and education buildings across Sydney. Working closely with engineers, architects and consultants, we deliver waterproofing repairs that address the underlying cause of water ingress and restore the long-term performance of the building.
Whether it’s a targeted repair or a complete waterproofing replacement, our focus is on delivering practical, durable solutions with minimal disruption to occupants.
Our Waterproofing Services
Our Waterproofing Services
We provide a comprehensive range of remedial waterproofing services, including:
- Balcony waterproofing
- Roof waterproofing
- Podium deck waterproofing
- Planter box waterproofing
- Basement waterproofing
- Lift pit waterproofing
- Negative-side waterproofing
- Wet area waterproofing
- Expansion joint waterproofing
- Waterproofing investigations
- Leak detection and defect rectification
- Flood Testing
- Interim waterproofing solutions
- Waterproofing replacement as part of complete building rectification
Where We Work
Our team regularly undertakes waterproofing projects for:
- Strata apartment buildings
- Commercial buildings
- Government facilities
- Schools and education facilities
- Industrial buildings
- Aged care facilities
- Residential homes
Whether the building is occupied or vacant, we carefully plan works to minimise disruption while maintaining safety and programme.
Our Approach
01 Understand the Defect
Every project begins by understanding why the waterproofing system has failed. We review defect reports, engineering documentation and site conditions before recommending the most appropriate repair methodology.
02 Plan the Works
Every building presents different challenges. We develop construction methodologies that consider access, resident safety, weather exposure, sequencing and building operations.
03 Deliver the Repair
Our experienced remedial team carries out the works in accordance with the engineer's design or approved repair methodology, maintaining clear communication throughout the project.
04 Verify and Handover
Completed works are inspected, tested and handed over with all relevant documentation, giving clients confidence the repair has been completed correctly.
Waterproofing Systems We Install
We work with leading waterproofing systems suitable for remedial applications, including:
- PVC sheet membranes
- Liquid-applied membranes
- Trafficable membrane systems
- Internal wet area membranes
- Negative-side waterproofing systems
- Injection systems for crack sealing
System selection is based on the engineer’s design, building conditions and long-term performance requirements.
Why Choose Metro Remedial for Waterproofing
We Understand Building Defects
Waterproofing failures are often symptoms of broader building issues. Our remedial background allows us to identify contributing factors such as structural movement, failed detailing, drainage issues and construction defects.
We Work with Design Professionals
We regularly deliver projects from engineer and architect documentation, ensuring repairs are completed in accordance with the design intent.
Specialists in Occupied Buildings
Our teams work in occupied apartment buildings, commercial properties and education facilities every day, maintaining clear communication with residents, tenants and stakeholders throughout construction.
Practical Solutions
Whether your building requires an interim repair to prevent further damage or complete waterproofing replacement, we'll recommend the most practical solution based on the building's condition and available budget.
Engineers & Design Practitioners
With 90 years of combined experience across engineering, building and construction, we have the technical background to read a defect report and understand what’s driving the failure before a single thing is touched on site.
Strata Managers
Dealing with resident complaints about a leaking balcony or roof, but the levy isn't there for full rectification yet? We can deliver a credible interim solution that stops the damage now and provides a clear path to the permanent fix.
Commercial Facility Managers
Leaks affecting tenants in an occupied commercial building? We work in live environments every day, with the protocols to keep your operations running and your tenants informed.
Who We Work With
Our Work
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Related Remedial Services
Waterproofing failures are often linked to other building defects. Metro Remedial also provides:
- Waterproofing
- Concrete cancer repairs
- Concrete spalling repairs
- Structural crack repairs
- Brick and masonry repairs
- Expansion joint replacement
- Leak detection and investigations
- Structural repairs
- Balustrade Replacement
Frequently Asked Questions
How do I know if my waterproofing has failed?
Common signs include internal water staining, leaking balconies, ponding water, damp walls, efflorescence, cracked tiles, deteriorating grout and water entering below balconies or roofs.
Can waterproofing be repaired without removing tiles?
Sometimes. Minor defects may be suitable for localised repairs or interim solutions. Where the membrane itself has failed, complete replacement is often the most reliable long-term solution.
Do you work from engineer's reports?
Yes. Many of our projects are delivered from engineer, architect and Design Practitioner documentation under the NSW Design and Building Practitioners framework.
Can residents remain in the building during the works?
In most cases, yes. We regularly deliver projects in occupied strata and commercial buildings while managing safety, access and communication.
Do you offer interim waterproofing repairs?
Yes. Where full rectification isn't immediately feasible, we can provide interim repairs to reduce water ingress while owners secure funding for permanent works.
Talk to Sydney's Façade Repair Specialists
Whether you’ve identified cracks in your façade, received an engineer’s defect report or are planning a complete building remediation project, Metro Remedial can help.
We’ll assess your requirements, review the available documentation and provide a practical solution tailored to your building.