Leaking balcony? Fix the cause, not the surface.
Full balcony rebuilds and membrane replacement for Sydney strata and commercial buildings — diagnosed to the root cause, repaired to standard, and staged so residents stay in place.
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What is balcony remediation?
Balcony remediation is the repair of the whole balcony system — not just the tiles you can see. A balcony is a layered build: structural slab, waterproofing membrane, screed that sets the fall to the drain, then tiles on top. When a balcony leaks or cracks, the visible damage is usually the last stage — the real failure is in a layer underneath.
Proper remediation means finding which layer failed and why — a perished membrane, a fall that ponds water, structural movement, or poor original detailing — then rebuilding from that layer up so the fix lasts decades, not until the next wet season.
6 signs your balcony is failing.
Most balcony failures show up long before the leak does. If you can see any of these, the system underneath is already compromised.
A leak you can see is a fraction of the damage you can't.
Balcony defects don't stay still. Left unactioned, a maintenance item becomes a structural one — and a committee liability.
Safety risks
Failed balustrade fixings and spalling concrete on a balcony edge above a walkway are a public-safety risk the owners corporation owns — and a council order waiting to happen.
Escalating repair costs
Water past a failed membrane reaches the structural slab and the unit below. Caught early it's a membrane job; caught late it's concrete repair, internal make-good and relocation cost.
Loss of asset value
Balcony defects show up in strata reports and pre-purchase inspections — and follow the building until they're fixed properly, dragging on every sale in the block.
Repair balconies the smarter way.
We don't just re-tile balconies — we remediate the root cause and restore durability for decades.
Diagnose the source
Our building investigation identifies whether the problem comes from waterproofing failure, structural movement, or poor detailing — before a price is quoted, so the scope matches the actual cause.
Match the repair to the environment
Balconies face different stresses — UV exposure, ponding water, high-rise wind loads. We select systems to suit your conditions, often integrated with waterproofing remediation.
Integrate repairs with the whole building
Balcony remediation connects with façades, windows and internal finishes. Our works tie into adjacent systems for long-term watertight performance, often as part of broader façade remediation.
Cut costs by avoiding rework
Quick fixes like patch membranes or retiling without substrate prep always fail. Our approach follows defect rectification done once, properly — so you're not funding the same balcony twice.
The types of balcony work we do.
Targeted repairs through to full-system remediation — each can be scoped on its own or as part of a whole-balcony rebuild.
Why our balconies don't fail twice.
The cheap quote patches the surface and walks away. Here's what that difference actually means for your building.
The proof is in the projects.
Mixed-use strata — St Leonards
Non-compliant waterproofing to the rooftop and balconies replaced with a sheet membrane system, with all windows and doors renewed. Three scopes integrated into a single 8-month program to minimise disruption and duplication.
"They combined three major scopes into one program. We expected 12 months of chaos — it was done in eight."
— STRATA MANAGER, ST LEONARDS
Mid-Rise Strata — Warwick Farm
One residential tower with active roof leaks. Rooftop waterproofing had failed and water was getting into the units below every time it rained. We stripped the roof back to substrate, found the root-cause of failure at service penetrations and installed a new sheet membrane system with proper falls and drainage.
"They set up their team and completed the works all at once, not a single day of lost time was caused."
— STRATA MANAGER, WARWICK FARM
Low-rise strata — Manly
Tight walk-up strata with one driveway and carpark. Full balcony re-waterproofing delivered balcony-by-balcony while the property kept garage and driveway access. Staged for minimal disruption across the works.
"They worked around our access the whole time — every owner kept use of their carpark, and only a couple of balconies were ever offline."
— STRATA MANAGER, MANLY
Warrantied in writing. Verify everything.
Most balcony repairs fail because the last contractor patched instead of fixed — and walked away with no warranty. We don't.
From first call to fixed quote — no mystery.
Send the reports you have, or just describe the symptoms.
Within 24 hrsWe visit, investigate, and confirm the actual source of the leak.
Days, not weeksA documented, engineer-checkable scope your committee can approve.
Ready for AGMBalcony-by-balcony, residents in place, warranty on completion.
On your scheduleWe're a fit for some buildings, not all.
We'd rather tell you upfront than waste your committee's time. Here's who we're built for — and who we're not.
This is for you if…
- You manage or own a strata or commercial building with balcony defects across multiple units.
- You have an engineer's report or a defect that needs proper diagnosis, not a quick patch.
- The building is occupied and works need to be staged around residents.
- You need DBP-compliant documentation your committee and insurer can rely on.
- Your project is from around $50K and up.
Probably not us if…
- You need a single tile re-grouted or a one-off cosmetic touch-up on one balcony.
- You're after the cheapest patch to get through the next inspection, not a lasting fix.
- It's a domestic house balcony under a few thousand dollars — a local handyman is a better fit.
- You need it done this week without an investigation — we diagnose before we price.
You'll deal with the builder, not a call centre.
I started Atomic Projects because I was tired of watching committees pay twice — once for the patch, then again for the real repair. Every project we take, I'm accountable for. Send me your engineer's report and I'll tell you straight what the last team missed.
What balcony remediation costs in Sydney.
Costs depend on severity and access. These are realistic ranges — your fixed price is confirmed after a building investigation, before any work starts.
Individual balcony repairs and remediation.
Façade with balcony upgrades across a building.
Full high-rise balcony and façade remediation programmes.
All scopes are transparent and aligned with defect rectification — no mystery line items, no "we'll see when we open it up" surprises.
Start with a conversation.
We'll visit your building, confirm the source of the leak, and give you a clear, fixed-price path forward — free, no obligation. We respond within 24 hours.
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What your committee will want to know.
What do balcony remediation works involve?+
How long does balcony remediation take?+
How much does balcony remediation cost in Sydney?+
We've had this leak repaired twice and it keeps coming back. Why?+
What is the impact on residents or tenants?+
What warranties are provided?+
What causes balcony leaks or failures?+
Are you registered for regulated work on our building?+
Do I have to move out during balcony repairs?+
Who pays for balcony repairs in a strata building?+
Do balcony repairs need to comply with the DBP Act?+
What are the signs a balcony needs remediation?+
Can you repair just one balcony, or do all of them need doing at once?+
Your balcony deserves better than a patch.
Stripped to substrate, falls corrected, membrane detailed at every junction — backed by a written 10-year warranty. Book a free assessment or a 15-min call.