Waterproofing Remediation

Is Your Property Struggling with Leaks or Water Ingress?

Leaking basements, balconies, rooftops, or façades aren’t just inconvenient — they signal a breakdown in your building’s waterproofing system. Left unresolved, water penetrates, spreads, and damages everything it touches, from structural elements to finishes.

What Happens When Waterproofing Fails?

When waterproofing breaks down, water doesn’t just “seep in” — it spreads, corrodes, and damages everything it touches. The longer it’s ignored, the more destructive (and expensive) the outcome.

1. Structural Damage

When membranes fail, water seeps into concrete, steel, and masonry.

Reinforcement corrodes, concrete spalls, and timber rots.

Left untreated, these issues create major safety risks and require large-scale Concrete & Structural Repairs or façade works.

In underground basements, hydrostatic pressure can force water through even the smallest cracks.

2. Health & Safety Risks

Leaks don’t stay hidden.

They cause mould, mildew, and poor air quality — impacting resident health.

Water ingress also increases slip hazards in car parks, podiums, and stairwells.

In severe cases, it compromises fireproofing, electrical systems, or lift shafts, turning maintenance issues into real safety hazards.

Many of these issues are uncovered during Building Investigations.

3. Escalating Costs & Disruption

Every month of delay increases costs.

Early leaks can often be resolved with targeted repairs, but neglect usually demands full membrane replacement.

This means longer downtime, higher budgets, and major disruption for residents and managers.

Comprehensive solutions like Façade Remediation or Defect Rectification are often needed once waterproofing failures spread.

Fix Waterproofing the Smart Way – Our Approach

We don’t just seal leaks — we solve the roof cause and protect the whole property for the future..

1. Diagnose the Source.

Waterproofing failures often show up far from the entry point. Our Building Investigations use moisture testing and invasive inspections to identify the real cause.

2. Match the Repair to the Environment

Every building faces unique pressures — rooftop UV, below-ground hydrostatic pressure, or balcony ponding. We select systems designed to last in your building’s conditions, often combined with Roof Repairs or Balcony Remediation.

3. Integrate Repairs with the Whole Property

We don’t do “band-aid” patching. Repairs tie into surrounding structures, joints, and drainage to protect the building as a whole. This integration makes Waterproofing Remediation a long-term solution, not a quick fix.

4. Cut Costs by Avoiding Rework

Cheap waterproofing fails fast. We use engineered systems, proven detailing, and correct installation — in line with our Defect Rectification approach — to reduce rework and future costs.

5. Prove It with Evidence

Every waterproofing project includes QA reporting, test results, and photo records. This documentation supports compliance and, when relevant, Major Loss Insurance claims.

Types of Waterproofing & Remediation Services We Provide

Our waterproofing solutions cover every scale of need - from small leak repairs to full building remediation - ensuring durability, compliance, and long-term performance.

Basement & Negative Waterproofing
Specialised waterproofing solutions applied to the internal face of concrete walls and slabs to stop water ingress where positive-side access is impossible, such as basements, lift pits, and retaining walls.
Balcony & Terrace Waterproofing
Installation of high-performance waterproofing systems for balconies and terraces to prevent leaks, structural damage, and costly repairs — ensuring long-term protection and compliance with Australian Standards.
Planter Box Waterproofing
Specialised waterproofing systems for planter boxes to prevent water leaks, soil saturation damage, and structural deterioration, ensuring plant health while protecting surrounding building elements.
Podium & Roof Deck Waterproofing
High-performance waterproofing systems for podium slabs, rooftop terraces, and communal open spaces to protect against water ingress, thermal movement, and long-term weather exposure.
Bathroom & Wet Area Waterproofing
Installation and remediation of waterproofing systems in bathrooms, laundries, and other wet areas to protect structures from moisture damage, ensure compliance with Australian Standards, and extend the lifespan of finishes.
Sealant Replacement & Joint Remediation
Removal and replacement of failed, cracked, or deteriorated sealant in façades, windows, expansion joints, and other critical interfaces to restore weatherproofing and movement capability.
Waterproofing for Heritage Structures
Design and installation of discreet, high-performance waterproofing systems for heritage-listed and historically significant buildings — protecting against water ingress while preserving architectural authenticity.

Success Stories

See how we’ve turned complex projects into lasting value — with minimal disruption and maximum confidence.

Explore our projects

Facade Remediation: Re-Cladding
A safer, stronger façade for the future.

Structural Remediation (Concrete)
Protecting Homes and Restoring Trust.

A Remedial Waterproofing Transformation: From Leaks to Luxury.

High-Rise Facade Remediation
Strength Restored and Safety Secured.

Heritage Facade and Colorbond Roof Replacement Success Story.

Colorbond Roof Replacement: Defying Downpours.

Reviving a Concrete Pool: From Bad to Brilliant

Why Atomic is the best in
Waterproofing & Water Ingress Repairs  

It’s not just about the work — it’s the confidence we deliver. Every project is about maximising value, minimising disruption, and building durability that lasts.”

Specialist Focus

We only do remedial building. It’s not an add-on — it’s our whole game.

Engineer & Strata Partnerships

Top engineers and strata managers trust us because we make their designs work on site.

Premium Quality

Tier 1 standards, without the Tier 1 price tag. We deliver top finishes, safe work, and strong systems.

Proven Track Record

From high-rise towers to heritage sites, we’ve done it all. Every job makes us better, and clients know we’ll get it right.

Client Care

We don’t just fix buildings, we look after people. Less noise, clear updates, and full accountability from start to finish.

Take the next step.

Fill out the form below and let's build something that lasts.

Phone: Call us at 0410 515 509

‍Email: Send us a message at hello@atomicprojects.com.au
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Frequently Asked Questions

What do waterproofing remediation works involve?

Depending on scope, works may include:

• Membrane removal and reinstatement

• Sealant replacement and detailing

• Drainage upgrades and joint protection

• Blocked or inadequate drainage.

• Negative-side tanking for basements

Often, these works integrate with Façade Remediation or Concrete Repairs.

How long does waterproofing remediation take?

Time frames vary:

• Small balcony leaks: 1–2 weeks

• Rooftop or podium replacements: 1–3 months

• Basement or full-building remediation: 3–6 months+

The first step is a Building Investigation to confirm scope.

How much does waterproofing remediation cost in Sydney?

Costs depend on size and severity:

• Localised balcony or crack repairs: $10k–$50k

• Rooftop or podium upgrades: $100k–$500k

• Full-building remediation: $1m+

We provide itemised scopes in line with Defect Rectification.

What is the impact on residents or tenants?

Waterproofing works can be noisy and disruptive, but we minimise this with:

• Dust and water suppression systems

• Protective sheeting and staging plans

• Advance notifications and daily updates

See how we manage live sites in our Projects.

What warranties are provided?

We provide:

• Workmanship warranties

• Manufacturer warranties on membranes and sealants

• Compliance documentation with NCC and DBP Act

Aligned with our Defect Rectification systems.

What causes waterproofing failures?

Common causes include:
‍
• Ageing membranes

• Poor detailing around joints and penetrations

• Movement in structures

• Incompatible patching over time

These issues often connect to Concrete Repairs or Brickwork Repairs.

Do you remediate heritage buildings as well as modern ones?

Yes — we waterproof Heritage Buildings with approved methods while applying engineered systems to modern structures.

Who should I contact for waterproofing remediation in Sydney?

Contact Atomic Projects — Sydney’s remedial waterproofing specialists.

We diagnose leak paths, rebuild substrates, and install engineered, certifiable systems that protect buildings long-term.

📞 0410 515 509 | ✉️ hello@atomicprojects.com.au

Or explore related services: Façade Remediation, Balcony Remediation, Roof Repairs.

Ph: 0410 515 509hello@atomicprojects.com.au11A Tangarra St EastCroydon Park NSW 2133Contact Us
Core Services
Facade RemediationConcrete & Structural RepairsWaterproofing RemediationBrickwork & Render RepairsBalcony RemediationCladding ReplacementRoof Repairs & ReplacementBuilding Investigations
Sectors
Remedial Building ServicesMajor Loss InsuranceDefect RectificationHeritage Restoration
Specialised Strata Services
Strata Building ReportsStrata Remedial Building Services
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