Remedial service

# Concrete Repair, Brisbane & South East Queensland

Assessment and remediation of deteriorated, damaged or defective concrete — spalling (“concrete cancer”), cracking, carbonation and corrosion — repaired to AS 3600 with protective coatings.

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Call 0488 773 232
Common defects in SEQ

## A climate that accelerates concrete deterioration

South East Queensland’s high humidity, salt-laden coastal air, thermal cycling and frequent heavy rainfall create conditions that accelerate concrete deterioration.

### Spalling (concrete cancer)

Chloride or carbonation-induced corrosion of embedded reinforcing steel causes the steel to expand, fracturing and detaching the concrete cover — visible as cracking parallel to reinforcement, rust staining and displaced fragments. Prevalent in older residential balconies, Gold Coast beachside apartments and 1960s–80s commercial buildings.

### Cracking, carbonation & delamination

Structural, shrinkage, thermal and settlement cracks reduce waterproofing integrity and admit moisture and chloride. Carbonation — CO₂ diffusion reducing alkalinity — removes the passive protection of the steel, critical in older structures with inadequate cover. Delamination is loss of bond between substrate and applied renders or toppings.

Our process

## Our concrete repair process

1. #### Condition survey & testing

   Detailed visual survey, carbonation depth testing (phenolphthalein), chloride profiling, half-cell potential surveys and cover-depth measurement, documented in a written condition report.

2. #### Break-out & preparation

   Deteriorated concrete is broken out to sound material. Corroded reinforcement is exposed and cleaned to SA 2.5 or equivalent, and the remaining cross-section assessed.

3. #### Corrosion treatment

   Cleaned reinforcement receives two coats of approved corrosion-inhibiting primer or patch-bond coat appropriate to the repair mortar system.

4. #### Reinstatement

   Repairs use structural repair mortars selected by material type, geometry and exposure classification in accordance with AS 3600 — by hand, form-and-pour or spray application.

5. #### Protective coatings

   An elastomeric waterproof coating, anti-carbonation coating or penetrating sealer is applied to prevent recurrence and protect adjacent areas, matched to the exposure class.

Repaired to standard

## Long-term repair, not a cosmetic patch

Cost depends on the extent of deterioration, structure type, access and methodology. We provide a written, itemised quote following a condition survey — and insurer-aligned documentation where damage is claimable.

- Carbonation, chloride and half-cell testing
- Reinforcement cleaned to SA 2.5 and corrosion-treated
- AS 3600-compliant structural repair mortars
- Anti-carbonation and elastomeric protective coatings
- Tinted and textured to match surrounding concrete
- Occupied-building programming, including out-of-hours works

Concrete Repair — FAQs

## Common questions

It is informal shorthand for concrete spalling driven by corrosion of embedded reinforcing steel. It is not dangerous in the early stages, but left untreated it progresses — weakening structural elements and increasing the extent and cost of repair. Early intervention is strongly recommended.

Modern polymer-modified repair mortars can be tinted and textured to closely match surrounding concrete. For heritage structures with exposed aggregate or specialist finishes, we use conservation-aware systems and, where required, heritage practitioners.

Yes. Most works can be programmed to minimise disruption, including out-of-hours or staged works on residential and commercial properties.

Cost depends on the extent of deterioration, structure type, access and methodology. We provide a written, itemised quote following a condition survey. For insurance-related damage, we prepare documentation aligned with insurer requirements.

Related services

## You may also need

Structural Repair
Facade Restoration
Defect Rectification
Get started

## Spalling, cracking or rust staining?

Catch it early. Book a condition survey and get a documented, standards-referenced repair scope before the problem spreads.

Request a Consultation
Call 0488 773 232