Atomic Projects facade remediation on a Sydney strata building
Home › Services › Defect Rectification
Defect Rectification · Sydney

Building defects? Fix the cause, not the symptom.

Engineer-directed rectification of building defects in Sydney strata and commercial buildings — waterproofing failures, structural cracking, facade and cladding defects. Investigated to the root cause and fully documented for your OC, certifier or claim.

✓ Class 2 DBP Registered✓ Licence 360636C✓ Written 10-year warranty★ 4.7 Google rating
100 +
Buildings
$20M +
Delivered
15 +
Years experience
4.7
Google rating
Get a quote
Tell us about your building. We respond within 24 hours.
We respond within 24 hours. No spam, ever.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Start here

What is defect rectification?

A building defect is rarely just the thing you can see. A stain on a ceiling, a crack in a wall, a leaking balcony — each has a cause, and any fix that doesn't find the cause just moves the problem somewhere else. That's especially true in strata, where a common-property defect affects every owner. Defect rectification is repairing the failure behind the symptom — not patching what's visible.

Proper rectification starts with investigation: which layer or system failed, and why. The repair is then designed to an engineer's methodology and documented at every stage — so the fix holds, and the paperwork stands behind it whether you're getting works signed off, claiming under the building bond scheme, or dealing with the original builder.

Repair vs rectification — the distinction that catches committees: a repair patches the symptom (re-paint, re-seal, re-tile). Rectification finds and fixes the failure behind it. In strata, that difference decides whether the problem comes back — and who pays when it does.
Know the symptoms

6 signs your building has a defect.

Most defects show up long before anything fails outright. If you can see any of these, something underneath needs diagnosing.

1
Water stains on ceilings or wallsThe clearest sign water is already inside the structure — tracking from a failed membrane, joint or flashing above.
2
Cracking in walls, slabs or renderPattern, width and movement tell the story — some cracking is cosmetic, some is structural. Diagnosis tells you which.
3
Drummy tiles or lifting finishesHollow-sounding tiles and bubbling finishes mean water or movement has debonded the layers beneath.
4
Efflorescence and salt stainingWhite deposits show water is moving through masonry or concrete it should be running off.
5
Corroding fixings or reinforcementRust staining from balustrades, lintels or slab edges is a water path — and a safety liability the owners corporation carries.
6
Spalling or flaking concreteConcrete breaking away means water has reached the steel — it's now structural, not cosmetic.
⚡ Active defect risk? We can assess within days.
Why it matters now

The defect you can see is a fraction of the problem you can't.

Building defects don't stay still. Left unactioned, a maintenance item becomes a structural one — and a committee liability.

01

Safety risks

Failed fixings, spalling concrete and loose facade elements above walkways are a public-safety risk the owners corporation owns — and a council order waiting to happen.

02

Escalating repair costs

Water past a failed system reaches the structure and the units below. Caught early it's a contained repair; caught late it's concrete repair, internal make-good and a much bigger bill.

03

Loss of asset value

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.

Our approach

Rectify defects the smarter way.

We don't patch symptoms — we investigate the cause, fix the system that failed, and document it so the fix stands up.

1

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.

2

Match the repair to the system

Defects live in systems — waterproofing, structure, facade, fire. We match the repair method to the system that actually failed, often integrated with waterproofing remediation.

3

Integrate repairs with the whole building

A defect in one system usually touches its neighbours — facades, windows, internal finishes. We tie the rectification into adjacent systems for long-term performance, often as part of façade remediation.

4

Cut costs by avoiding rework

Quick fixes always fail. Our approach follows investigation-led rectification done once, properly — so you're not funding the same defect twice.

What's covered

The types of defects we rectify.

Targeted rectification through to whole-system remediation — each scoped on its own or as part of a wider program.

Water Ingress & Leak RepairsFailed membranes, balcony and bathroom leaks, water tracking through the envelope — diagnosed and rectified at the source.Read more →
Structural Defect RepairsCracking, spalling and movement diagnosed and repaired to an engineer's methodology.Read more →
Facade Crack RepairsEnvelope cracking investigated and rectified — matched finishes, properly detailed movement joints.Read more →
Fire Compliance UpgradesPassive fire and compliance defects rectified with the certification trail your building needs.Read more →
Joint & Sealant Defect RepairsFailed joints and sealants replaced with compatible systems, detailed to last.Read more →
Poor Workmanship RectificationOriginal-builder shortcuts investigated, documented and rebuilt to standard.Read more →
Why Atomic

Why our rectifications don't fail twice.

The cheap quote patches the surface and walks away. Here's what that difference actually means for your building.

What matters
Atomic Projects
Typical contractor
The fix
 Strips back to the failed system, fixes the cause
 Patches the visible symptom
Warranty
Written 10-year term
× Vague "warranty provided"
Residents
Staged — people stay in place
× Wants the building empty
Documentation
Engineer-directed, documented
× Little to no QA trail
Root cause
Investigated & confirmed first
 Assumes, patches and hopes
Our work

The proof is in the projects.

Mixed-use strata facade in St Leonards after ACP cladding and window replacement — Atomic ProjectsWaterproofing defect rectification

High-rise strata — Miranda

Balcony waterproofing had failed across two towers — water into the units below every time it rained. Each balcony was stripped to substrate, the root-cause failures found at upturns and junctions, and a new sheet membrane system installed with proper falls and drainage. Staged so residents always had access.

"18 balconies done in stages, 6 at a time. Every unit was watertight on the first go."

— BUILDING MANAGER, MIRANDA

Balconies18
Repeat leaks0
$980KProject Value
Manly low-rise strata balcony waterproofing project — Atomic ProjectsRooftop waterproofing defect

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

500m²Rooftop Area
5Months
$650kProject Value
Manly low-rise strata balcony waterproofing project — Atomic ProjectsBalcony waterproofing defect

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

12Balconies
0Complaints
$650KValue
Risk reversal

Warrantied in writing. Verify everything.

Most defect repairs fail because the last contractor patched instead of fixed — and walked away with no warranty. We don't.

Written 10-year warrantyA defined term, in writing — not the vague "warranty provided" everyone else offers.
Class 2 DBP — Licence 360636CVerify us on the NSW Fair Trading register before you call. We'd rather you check.
Engineer-directed & documentedA QA paper trail your committee and engineer can audit at any stage.
Leak investigation includedWe confirm the actual source before we pull anything apart. Not charged as an extra.
We'd rather you check than take our word for it.
What happens after you enquire

From first call to fixed quote — no mystery.

1
You enquire

Send the reports you have, or just describe the symptoms.

Within 24 hrs
2
Site assessment

We visit, investigate, and confirm the actual cause of the defect.

Days, not weeks
3
Fixed-price scope

A documented, engineer-checkable scope your committee can approve.

Ready for AGM
4
Staged works

Staged works — a section at a time, residents in place, warranty on completion.

On your schedule
Is this you?

We'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 defects across common property or 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 crack cosmetically filled or a one-off touch-up in one unit.
  • You're after the cheapest patch to get through the next inspection, not a lasting fix.
  • It's a small domestic repair 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.
They stripped it back, found the failures three other contractors missed, and gave us a system we can finally trust — without a single owner having to move out.
Strata Committee ChairHigh-rise building, Darling Point
Atomic Projects founder on a Sydney remedial building site
Who you're dealing with

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.

— The Atomic Projects founderClass 2 DBP registered builder · Licence 360636C
Straight answers on price

What defect rectification 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.

Localised repairs
$10k–$50k

Individual defect repairs and rectification.

MID-SCALE
$200k - $800k

Multi-unit or whole-system rectification across a building.

Large complexes
$1m–$5m+

Full building rectification and remediation programmes.

All scopes are transparent and fixed-price against a defined methodology — 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 cause of the defect, and give you a clear, fixed-price path forward — free, no obligation. We respond within 24 hours.

Get a quote
Tell us about your building. We respond within 24 hours.
We respond within 24 hours. No spam, ever.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Common questions

What your committee will want to know.

Is this defect just cosmetic, or is it structural?
That's exactly what the investigation tells you. Some cracking is surface movement; some is a sign of something structural underneath. We diagnose which before anyone spends money on a repair.
How long does defect rectification take?
Timelines vary by scope: localised repairs 1–2 weeks; mid-scale programs 2–3 months; whole-building rectification 6 months+. Scope is confirmed through a building investigation before works start.
How much does defect rectification cost in Sydney?
Costs depend on severity and access: localised repairs $10k–$50k; mid-scale rectification $200k–$800k; large complexes $1m–$5m+. All scopes are fixed-price against a defined methodology — no open-ended day rates.
We've had this fixed twice and it keeps coming back. Why?
Because the previous fixes were repairs, not rectification — new finishes over a failure that was never diagnosed. The problem keeps finding the same fault. We investigate first, so the fix actually holds.
What is the impact on residents or tenants?
Works are staged — a section or a few units at a time — so the building stays safe and people keep access to their homes. Occupied buildings are our normal working environment.
Will your documentation support our claim against the builder?
Our job is the rectification and the evidence behind it — root-cause findings, photos, scans and a documented methodology. That record is built to stand up with your engineer, certifier or the parties in a claim. We're your builder, not your lawyer — but good documentation is what those cases turn on.
What causes building defects?
Most trace back to failed waterproofing, poor original detailing, structural movement, or workmanship shortcuts. The visible symptom usually sits downstream of the cause — which is why investigation comes first.
Are you registered for regulated work on our building?
Yes — Class 2 DBP registered, Licence 360636C, verifiable on the NSW Fair Trading register. On Class 2 buildings, structural, waterproofing and fire-safety work must be delivered under declared designs — that's the framework we work in every day.
What is the process for rectifying building defects?+
Investigate first: testing and inspection to find the root cause, not just the symptom. An engineer then specifies the repair methodology, the work is priced against that defined scope, and delivery runs under an inspection and test plan with hold points at every cover-up stage. Records are photographed throughout and handed over at completion with the warranty documentation.
Who is responsible for fixing defects in a strata building?+
For common property defects, the owners corporation is responsible for arranging rectification. Where the building is still within the statutory warranty period, the original builder may be liable for the work, and the OC's documentation of each defect matters for that claim. Where the builder is gone or the warranty has expired, the OC engages a remedial contractor directly.
What is a defects liability period?+
It is the window after practical completion, typically 12 months, during which the contractor who did the work must return and rectify any defects that emerge in it, at no extra cost. It sits alongside NSW statutory warranties rather than replacing them. A contractor's willingness to put clear DLP terms in writing is a useful test before you engage them.
Can defect rectification be staged to fit our budget?+

Yes, and on larger buildings it usually is. The engineer prioritises safety-critical items first, then the defects that worsen fastest, and the program is staged so the owners corporation can fund stages through the capital works fund across budget cycles. Staging by zone also limits disruption, because only part of the building is a work area at any time.

When should an owners corporation act on a defect report?+
Promptly. Water and corrosion defects compound: a failed sealant joint becomes saturated masonry, a small spall becomes a breakout scope. Acting early usually means a smaller, cheaper repair and stronger records if a claim against the original builder is on foot. Sitting on a report while quotes are debated is the most expensive form of caution.

Your OC deserves better than a patch.

Investigated to the cause, rectified to an engineer's methodology, documented at every stage — backed by a written 10-year warranty. Book a free assessment or a 15-min call.

Book your free assessment →
or call 0410 515 509
Book a 15-min call
No obligation. We respond within 24 hours.
📞Get a free assessment →
Call NowGet a quote →