Black Feather ServicesBlack Feather
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Sydney & regional NSW

Precast Panel Post-Works & Concrete Repair

Finishing trades for precast manufacturers, panel installers, remedial builders, head contractors and building owners. Caulking, grouting and patching once the panels are up. Concrete cancer, spalling and crack repair on the buildings already standing.

Bruno Wagner, General Manager · more than ten years in precast and concrete in Australia

Black Feather operative working the underside face of an erected precast panel.
Black Feather operative working the underside face of an erected precast panel.

Insured, inducted and registered

  • AU$20,000,000 public & products liabilityBerkley Insurance Australia · to 7 April 2027
  • Workers compensationicare NSW · to 31 March 2027
  • White Card (CPCCWHS1001)All workers
  • GST registeredABN 83 659 949 809
Precast panel on the crane, starter bars exposed at the head, in sequence with erection.

Proven capacity

Scope delivered on a single
data centre package

Post-installation works on 400 precast panels for a data centre package, Marsden Park NSW, finished in four months in 2025. Figures below are the contracted scope for one project, not a career total.

5,070Lineal metres · joint caulking
960Lineal metres · base grouting
1,224Dowel groutings · 50 & 70 dia
258Plate patches · 250×350×12mm

Systems & materials

Systems specified and applied across recent packages. We install strictly to the manufacturer's written application requirements, and will match any product nominated by the builder or panel supplier.

  • Crosby 510
  • Sika 400 Grey
  • Fullaflex FR
  • Unitex Panel Patch
  • LW Panel Patch
Data centre package, Marsden Park NSW. The site behind the figures above.
Data centre package, Marsden Park NSW. The site behind the figures above.

Services

Two service streams, one accountable crew

Pick the one that sounds like your job. Both are delivered by the same directly employed crew, under the same insurance and with the same photographed close-out.

I manufacture or install precast panels

  • Caulking and joint sealing, base and dowel grouting, plate and grout-tube patching, applied to the panel manufacturer's specification.
  • Sequenced with your install programme and agreed with the builder at least one day ahead, so the trade behind us is never waiting.
  • Defect rectification and punch-list close-out, photographed and filed by project.

Precast panel post-works

I have a concrete problem on a building

  • Concrete cancer, spalling and exposed reo treated behind the bar, not patched over.
  • Crack repair, honeycomb repair, correction of falls, floor grinding and levelling.
  • Commercial, industrial and infrastructure buildings direct, and strata buildings as the concrete subcontractor to remedial builders, across Sydney, with AU$20,000,000 public liability.

Concrete repair and remedial works

Precast panel post-works

The finishing works between panel installation and practical completion

Works during and after the panel installation process, delivered to the manufacturer's specification and application requirements.

We understand that post-installation works sit on the critical path. Our commitment is a planned sequence, agreed with the builder and our supervisor at least one day ahead, so the trade behind us is never waiting.

Scope

  • Caulking & joint sealing, internal and external
  • Base grouting
  • Dowel grouting & liquid grouting
  • Patching of lifting plates & grout tubes
  • Expansion joints
  • Fire-rated joint systems
  • Panel-to-panel and panel-to-blockwork junctions
  • Defect rectification & punch-list close-out

Junctions and substrates

Silicone joint sealing to the system nominated by the panel supplier or builder. Sealed to precast, blockwork, brickwork, render, cladding and tiles. Expansion joints and fire-rated joint systems installed as a system, not as a bead.

Who supplies what on site

Black Feather supplies

Platform ladders and steps for its workers. Hand, battery and electric tools. PPE for every worker.

Client or builder supplies

Mobile plant such as scissor and boom lifts. A panel installation schedule, so crews are mobilised where and when needed.

Material

Installed to the manufacturer's written application requirements. Supplied by us, or free-issued by the builder or panel supplier. We match any product nominated.

Typical before. Panel joint as received: open, clean and square, before backing rod and sealant.
Typical before. Panel joint as received: open, clean and square, before backing rod and sealant.
Backing rod set to depth and joint dimensions checked before sealing.
Backing rod set to depth and joint dimensions checked before sealing.
Base grouting: formwork fixed and braced along the panel base, feed tube set.
Base grouting: formwork fixed and braced along the panel base, feed tube set.
Panel recess opened to a corroded cast-in fixing. Opening measured and recorded before reinstatement.
Panel recess opened to a corroded cast-in fixing. Opening measured and recorded before reinstatement.
Typical after. Completed patches either side of a sealed panel joint. Structural repair, prior to painting.
Typical after. Completed patches either side of a sealed panel joint. Structural repair, prior to painting.
Penetrations in a precast panel with reinforcement reinstated across the opening before grouting.
Penetrations in a precast panel with reinforcement reinstated across the opening before grouting.
Precast columns propped and braced, panels erected beyond, on a commercial site.

Concrete care & repair

Concrete repair and remedial works across Sydney

Structural and cosmetic remediation where concrete integrity is the priority, from make-good to full spalling treatment. Remedial concrete works on commercial, industrial and infrastructure buildings, and on strata buildings as the concrete subcontractor to remedial builders, delivered by our own directly employed crew.

AU$20,000,000 public & products liability · certificates of currency on request

What we treat

  • Concrete cancer & spalling treatmentRust staining, cover lifting off in plates, and concrete that sounds drummy or hollow when tapped.
  • Exposed reinforcement treatment & reinstatementBar visible at the surface, from low cover, vibration faults or corrosion.
  • Honeycomb & general patchingVoids and open aggregate where the concrete did not compact around the reinforcement.
  • Crack repairCracks in slabs, walls, parapets and soffits, repaired and made good to the surrounding surface.
  • Technical demolitionControlled break-out of concrete sections, with the surrounding structure left intact.
  • Floor grinding & floor toppingWorn, uneven or damaged slabs brought back to a level, usable surface. Concrete floor levelling to the tolerance specified.
  • Correction of fallsPonding on balconies, car park decks and wet areas that should drain and do not.
  • All grades of finishing productFinished to the surface class the specification calls up, ready for coating or left as the final face.
Delaminated cover and severely corroded reinforcement exposed adjacent to a service penetration.
Delaminated cover and severely corroded reinforcement exposed adjacent to a service penetration.

How a repair is done

01

Break out to sound concrete

Concrete is broken out square and cut back behind the bar, so the full circumference of the reinforcement is exposed rather than the face of it.

Concrete broken out square and cut back behind the bar to expose the full circumference of the corroded reinforcement.
Concrete broken out square and cut back behind the bar to expose the full circumference of the corroded reinforcement.

02

Reinforcement cleaned and treated

Steel is cleaned to bare metal and coated with a zinc-rich primer before the section is reinstated.

Reinforcement cleaned to bare metal and coated with zinc-rich anti-corrosion primer before reinstatement.
Reinforcement cleaned to bare metal and coated with zinc-rich anti-corrosion primer before reinstatement.

03

Reinstated to the original line

Repair mortar applied to the manufacturer's specification and ruled back to the original profile.

Bar and stirrup fully exposed. Removal taken past the reinforcement, edges cut square.
Bar and stirrup fully exposed. Removal taken past the reinforcement, edges cut square.

04

Finished to the class nominated

Surface finished to the class the specification calls up, ready for coating.

Precast panel cut-outs with exposed reinforcement primed, prior to patch reinstatement.
Precast panel cut-outs with exposed reinforcement primed, prior to patch reinstatement.

Why the repair holds

A patch applied over corroded steel hides the defect for a season and comes back larger. Cutting back behind the bar costs more time at break-out, and it is the difference between a repair and a cover-up.

Where the cause is cover depth or water ingress rather than the patch itself, we put that in writing before starting, so the builder can decide the scope with the engineer.

The same wall, start to finish

One parapet run, photographed from the same position at each stage. The pockets below held corroded cast-in fixings. The same face is shown as found, prepared, reinstated and finished.

BeforeBefore: a run of repair pockets opened along a parapet, embedded fixings corroded, rust staining below each pocket.
Before: a run of repair pockets opened along a parapet, embedded fixings corroded, rust staining below each pocket.
AfterAfter: the same parapet face reinstated and finished as a continuous run.
After: the same parapet face reinstated and finished as a continuous run.
BeforeBefore: broken slab-edge infill, spalled and standing proud of the adjoining slabs.
Before: broken slab-edge infill, spalled and standing proud of the adjoining slabs.
AfterAfter: the same infill reconstructed flush, with a defined arris.
After: the same infill reconstructed flush, with a defined arris.
RemovalRemoval: deteriorated stair haunch cut out, screed rail set to line.
Removal: deteriorated stair haunch cut out, screed rail set to line.
ReconstructionReconstruction: haunch rebuilt in repair mortar, run true from the bottom to the top of the flight.
Reconstruction: haunch rebuilt in repair mortar, run true from the bottom to the top of the flight.

Overhead slab repair

Soffit repairs are saw-cut to a square perimeter, broken out to sound concrete, and reinstated in halves so the bay stays supported while it cures.

Overhead slab repair. Saw-cut perimeter, mesh exposed, first half reinstated.
Overhead slab repair. Saw-cut perimeter, mesh exposed, first half reinstated.
The same bay reinstated and screeded flush.
The same bay reinstated and screeded flush.

Send us the defect list

Two or three photos with something in frame for scale, plus the building type, is enough to start.

Delaminated areas across a suspended car park slab.

Recent projects

Recent projects

A selection of completed and current commercial and residential projects for head contractors and precast installers across Sydney.

Builder / ClientProjectLocation
Hindmarsh
for Prestige Precast
Data centre package
Stage One post-installation works · completed 2025
105-113 Hollinsworth Road, Marsden Park
WestbourneThe Collective
Completed 2026
23-35 Atchison Street, St Leonards
BillBergiaArncliffe Central
In progress · 2026
26-42 Eden Street, Arncliffe
Gartner RoseArt Gallery Courtyard
In progress · 2026
Sydney
UltraThe Bryson
In progress · 2026
871-877 Pacific Highway, Chatswood
UltraNeutral Bay
Completed 2026
96 Ben Boyd Road, Neutral Bay

References available on request.

The Collective, St Leonards. Completed precast facade, post-works closed out.
The Collective, St Leonards. Completed precast facade, post-works closed out.
Arncliffe Central, BillBergia. Precast parapet run with joints sealed.
Arncliffe Central, BillBergia. Precast parapet run with joints sealed.
Art Gallery Courtyard, Gartner Rose. Fluted architectural panel, sealed vertical joints and base grout line.
Art Gallery Courtyard, Gartner Rose. Fluted architectural panel, sealed vertical joints and base grout line.
The Bryson, Chatswood. Sealant run across the panel profile, with no sealant carried onto the exposed face.
The Bryson, Chatswood. Sealant run across the panel profile, with no sealant carried onto the exposed face.
96 Ben Boyd Road, Neutral Bay. External corner joint, sealed and tooled through the panel intersection.
96 Ben Boyd Road, Neutral Bay. External corner joint, sealed and tooled through the panel intersection.
Patch repairs to a curved precast panel, applied and being finished.
Patch repairs to a curved precast panel, applied and being finished.

Photographic record

Every defect and rectification is photographed and filed by project, so the builder receives a documented close-out rather than a verbal sign-off. Records are available on request for any project listed above.

Price a package like these

How we price

Priced the way your contract is written

By project or by hour, with or without material, so the engagement fits your contract, not ours.

  • Project price
  • Hourly rate
  • With or without material

Tell us how your contract is written and the quote comes back in that format: a price for the project, an hourly rate for open-scope rectification and make-good, or a figure with material included. All quotes are ex-GST.

Commercial terms

  • Rate formatsProject price for a defined scope, built from the panel schedule, drawings or defect list. Hourly rate for open-scope rectification. With or without material, matching any product nominated by the builder or panel supplier.
  • TurnaroundQuote within one business day of receiving the schedule, drawings or defect list. Crew on site within a week of acceptance, depending on the size of the package.
  • InvoicingAll rates quoted ex-GST.
  • SequenceTask sequence agreed with the builder and our supervisor at least one day prior to start.
  • Close-outEvery defect and rectification photographed and filed by project. Records issued with the final invoice or on request.

On site

We bring

Platform ladders and steps. Hand, battery and electric tools. Gloves, safety glasses, hard hats and boots for every worker. Height safety equipment where required.

You provide

Scissor and boom lifts. Site induction. A panel installation schedule, or the defect list and access arrangements for remedial work.

Grout mixed on site to the panel install sequence.
Grout mixed on site to the panel install sequence.

Get a quote for your package

Our crew

Directly employed. Uniformed. Inducted.

The people who start your package are the people who finish it.

Our General Manager, Bruno Wagner, has more than ten years in the precast and concrete industry in Australia: caulking and patching precast panels on the tools, then concrete remediation, before running the crew and the programme. The method on site is one he has done himself.

Every crew member is directly engaged by Black Feather, uniformed and inducted on the head contractor's site before start. We pay above the going rate for the trade, and that is a retention decision rather than a gesture: a crew that stays is a crew that knows your sequence, holds the programme and leaves less rework for the trade behind us. It is what allows us to hold quality on repeat engagements rather than staffing a job and disappearing.

On-site practice

  • Gloves, safety glasses, hard hats and boots supplied to every worker
  • Fortnightly toolbox talks raising current site safety points
  • Silica Awareness training and mask fit test completed by every worker
  • Height safety equipment and harness use where required
  • Task sequence agreed with builder and supervisor one day prior to start
  • Compliance with head contractor site rules and inductions
Sealant gun at a vertical panel joint.
Sealant gun at a vertical panel joint.
Making good a parapet edge at height, hard hat and boots in use.
Making good a parapet edge at height.

Safety, insurance & compliance

Insured, inducted and site ready

Public & products liabilityAU$20,000,000 · Berkley Insurance Australia · current to 7 April 2027
Workers compensationicare NSW · current to 31 March 2027
Construction inductionWhite Card (CPCCWHS1001) · all workers
Site inductionsCompleted on every head contractor's site prior to start
Legal entityTwo Mates Renovation Pty Ltd trading as Black Feather Services · ABN 83 659 949 809 · ACN 659 949 809 · GST registered
CertificatesCertificates of currency, White Card records and product data sheets issued on request at tender stage
Sealant applied to a horizontal joint. Hard hat and full body harness in use.
Sealant applied to a horizontal joint. Hard hat and full body harness in use.

Documentation on request

Certificates of currency for public liability and workers compensation, White Card records and product data sheets are issued on request at tender stage, and supplied directly to the head contractor's compliance portal where required.

Request certificates at tender stage Capability Statement (PDF)

Straight answers

Straight answers

The five things we hear before a first engagement, and where we stand on each.

“You'll staff the job and then disappear halfway through.”

Our crew is directly employed, not hired in for the job, so the people who start your package are the people who finish it. The sequence is agreed with your supervisor at least one day ahead, and if a date has to move you hear it from us before it moves, not after. Every rectification is photographed, so the close-out is documented rather than verbal.

“A new supplier means three weeks of compliance paperwork.”

The documents a prequalification asks for exist today: certificates of currency for AU$20,000,000 public and products liability and for workers compensation, White Card records for every worker, ABN, ACN and GST registration. Request them at tender stage and they are issued to you or loaded straight into your portal. The Capability Statement on this page is the same information in the format your estimator files.

“Your rate won't fit the way my contract is written.”

Then tell us how it is written. We quote by project or by hour, built from your scope, the drawings or the defect list, and with or without material, so the price lands in the format your contract already uses. The engagement fits your contract, not ours.

“You'll patch over it and it comes back in two years.”

A patch applied over corroded steel hides the defect for a season and comes back larger. We break out behind the bar, clean the reinforcement to bare metal, prime it, and only then reinstate. Where the cause is cover depth or water ingress rather than the patch itself, we put that in writing before starting, so you can decide the scope with your engineer instead of paying for the same repair twice.

“You're too big for my building. Or too small for my job.”

The crew that seals the joints on a full data centre package is the same crew that reconstructs a single stair haunch. What changes is the sequence and how many people we put on it, not the method or the paperwork. Tell us the extent and we will say plainly whether it is a job for us.

Fair enough, send me a rate

Questions

Frequently asked questions

Who supplies the scissor lift and boom lift?
The client or builder. Black Feather supplies platform ladders and steps for its own workers. Mobile plant such as scissor and boom lifts is supplied by the client or builder, and access is confirmed when we agree the sequence.
What is concrete cancer?
Concrete cancer is the trade name for spalling caused by corroding reinforcement. The steel inside the concrete rusts, expands and pushes the cover off in plates. The first signs are rust staining, hairline cracks that follow the line of the bar, and areas that sound drummy or hollow when tapped. Left alone it spreads, because each new opening lets more water reach the steel.
Do you work to the panel manufacturer's specification?
Yes. We install strictly to the manufacturer's written application requirements and match any product nominated by the builder or panel supplier. Systems applied across recent packages include Crosby 510, Sika 400 Grey, Fullaflex FR, Unitex Panel Patch and LW Panel Patch.
How do you repair spalling concrete?
Break out to sound concrete, cut square and taken back behind the bar so the full circumference of the reinforcement is exposed. Clean the steel to bare metal and coat it with a zinc-rich primer. Reinstate with a repair mortar applied to the manufacturer's specification, ruled to the original line. Finish to the surface class called up, ready for coating. Where the cause is cover depth or water ingress rather than the patch itself, we put that in writing before starting.
Can you load your documentation into our compliance portal?
Yes. Certificates of currency for public liability and workers compensation, White Card records and product data sheets are issued at tender stage and supplied directly to the head contractor's compliance portal where required.
Do you work in occupied buildings and strata common areas?
Yes. Remedial work on an existing building is sequenced with the building or strata manager before we start: access, isolation of the work area, dust and noise.
Do you work outside Sydney?
Greater Sydney as standard. Regional NSW by arrangement, mobilised to your install programme. Tell us the location in the rate request and we will confirm it with the price.
How much does it cost?
It depends on three things: the quantity (lineal metres of joint, number of dowels or patches, square metres of repair), the access (ground level, EWP or height work) and whether material is supplied by us or by the builder. That is why we price from a schedule, drawings or a defect list rather than a phone description. Send them through the form and the quote comes back within one business day, by project or by hour, with or without material.
Are you a remedial builder?
No. We are the concrete trade on remedial work. Concrete cancer, spalling, exposed reinforcement, cracking, honeycomb, correction of falls and floor levelling are done by our own crew. We work as the concrete subcontractor to remedial builders and head contractors, and directly for commercial building owners where the scope is concrete.

Still unsure? Ask us in the form

Capability Statement

The same information, in the format your prequalification needs

Eight pages: company overview, both service streams, method, capacity, project list, insurance and compliance, contact. Forward it to your estimator or attach it to the tender.

PDF · 8 pages · Capability Statement 2026

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Request a rate

Let's price your next package.

Send us the panel schedule, the drawings or the defect list and we will come back with a quote within one business day, by project or by hour, with or without material. We work across Greater Sydney and regional NSW, and mobilise to your install programme within a week of acceptance, depending on the size of the package.

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Prefer email? Send the schedule, drawings or defect list to info@blackfeatherservices.com.au.

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Your request is with Bruno Wagner and the reply will come from info@blackfeatherservices.com.au. If you have photos, a panel schedule or drawings, email them to info@blackfeatherservices.com.au with your name in the subject and we will match them to this request.