Auckland concrete specialists

Property remedial & finishing experts.

Concrete repair, floor coatings, architectural finishes and painting for homes, commercial buildings and infrastructure. Led by Coco Santana, with more than 25 years in the trade.

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Board-formed concrete entry wall at dusk, Mount Maunganui residence — Mount Maunganui residence · Board-formed concrete

Recent projects

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Resurfaced tunnel lining at the City Rail Link — **City Rail Link**Infrastructure · Concrete remedials

Board-formed concrete home in Point Chevalier — **Point Chevalier residence**Residential · Architectural concrete

Glossy coated workshop floor in Ellerslie — **Ellerslie Mechanical**Commercial · Floor coating

Concrete-look feature wall in a CBD lift lobby — **Auckland CBD building**Commercial · Architectural finishes

25+years in the trade

SikaRockcote & Fosroc certified

LBPregistered team members

AKLbased, NZ-wide on request

From city tunnels to family homes, we make concrete look and perform the way it should.

CSIS repairs, protects and finishes concrete and building surfaces across Auckland. We work for builders, main contractors, property managers, architects and homeowners.

Every job starts with the substrate. We find the cause, prepare it properly, and finish it to last.

Concrete
Remedials Floor
Coatings Property
Maintenance Painting &
Plastering Residential
Projects Commercial
Projects

Resurfaced concrete tunnel lining at the City Rail Link

Commercial

From the City Rail Link to warehouses, workshops, office buildings and public spaces. Work scheduled around your programme and operations.

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Board-formed concrete retaining wall at a new Auckland home

Residential

Architectural concrete homes, retaining walls, garage floors, painting and plastering, finished to a commercial standard.

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What we do

Indoor or outdoor, residential or commercial. We assess the problem, recommend the right system and do the work ourselves.

Concrete Remedials

Repairs that stop damage spreading and restore the surface.

Crack & joint repair
Spalling & delamination
Tiltslab repair & skimming
Formwork & blowhole repairs
Architectural concrete remediation
Concrete-look & board-formed finishes

Floor Coatings

Hard-wearing, easy-clean floors for any space.

Epoxy systems
Polished concrete
Non-slip safety floors
Resin aggregate toppings
Sports floor recoating
Sealers & line marking

Property Maintenance

Planned and reactive upkeep for homes and commercial buildings.

Maintenance programmes
Trip hazards & defect repairs
Waterproofing
Joint sealing
Pre-sale touch-ups

Painting & Plastering

Interior and exterior work from a crew with decades in the trade.

Interior painting
Exterior painting
Solid plastering
Commercial repaints
Residential repaints

Featured projects

A selection of recent infrastructure, commercial and residential work.

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Resurfaced tunnel lining, City Rail Link

Infrastructure

A family-run crew with more than 25 years in the trade

CSIS is led by director Coco Santana, who has spent more than 25 years in concrete remediation, coatings, painting and plastering. He works on the tools alongside a small, experienced team that includes Licensed Building Practitioners.

We're trusted by builders and main contractors on projects as large as the City Rail Link, and we bring the same care to a single garage floor or a family home.

25+Years experience

3Certified systems

AKLBased & NZ-wide

One team, start to finishThe same people from site visit to final coat.
Clear, fixed quotesItemised pricing for tenders and variations.
Certified systemsSika, Rockcote and Fosroc approved applicator.
Site-safe & tidyWork planned around your programme and site rules.

Certified applicators

We are certified to install systems from these leading suppliers.

Request a quote

Tell us about the job and Coco will be in touch, usually within one working day.

Coco Santana, Director027 478 4871info@csis.co.nzAuckland & beyond

Projects

Our work

Concrete remedials, coatings and finishes across Auckland's infrastructure, commercial buildings and homes.

Infrastructure & public spaces

Remedial and resurfacing work on major transport and public-realm projects, delivered safely on live, controlled sites.

City Rail Link, Auckland

Concrete remedials & resurfacing

Concrete remedial and resurfacing work inside the City Rail Link tunnels and shafts. Stained and blemished tunnel linings were repaired and resurfaced to an even, consistent finish, working safely within a live major-infrastructure site.

Finished, evenly resurfaced tunnel lining in the City Rail Link — Finished tunnel lining

Stained and streaked tunnel wall before remedial work — **Before**Stained tunnel wall

Tunnel wall showing untreated concrete above and resurfaced concrete below — **Before / after**Untreated above, resurfaced below

Repaired and resurfaced concrete walls in a tunnel shaft — Shaft wall repairs

CSIS team member inspecting the tunnel — On site in the tunnel

Panmure public space

Concrete remedials & preparation · 2026

Concrete remedial and preparation work on the new public space in Panmure. The team repaired and finished the concrete steps, seating edges and walls, and prepared the stair treads for their anti-slip nosings.

CSIS team working on the concrete steps at the Panmure public space — Remedial work on the main steps

Two CSIS team members preparing a stair tread — Preparing the treads

Team member working along the edge of the concrete steps — Edge and joint work

Finished concrete steps beside timber seating — Finished concrete and timber seating

Finished concrete stair treads with anti-slip nosings — Finished stair treads

Commercial & industrial

Floors, walls and finishes for offices, workshops, industrial buildings and recreation facilities.

Auckland CBD commercial building

Architectural surface finishes · 2024

Architectural concrete-look finishes to the lift lobbies of a CBD office building, hand-applied for a natural, mottled concrete character, alongside remedial work to board-formed concrete with a timber-grain texture.

Lift lobby with a mottled concrete-look wall finish around two lifts — Lift lobby feature wall

Concrete-look finish continuing along an office corridor — Upper-floor lobby

Close view of the hand-applied concrete-look finish beside the lifts — Hand-applied finish

Board-formed concrete with a timber-grain texture — Board-formed, timber-grain concrete

Ellerslie Mechanical

Floor resurfacing & coating · 2026

A full resurfacing and coating of a busy mechanical workshop. The worn slab was prepared and repaired, then finished with a hard-wearing, easy-clean coating around the vehicle hoists and drainage channels.

Finished glossy grey floor coating in the Ellerslie workshop — Finished floor

Workshop floor part-way through coating, bare concrete beside finished coating — During: bare slab beside the new coating

Coated floor around the vehicle hoists — Around the hoists

Painter preparing the workshop walls — Wall preparation

Wide view of the finished workshop floor — Seamless finish across the bay

West Auckland industrial wall

Concrete remedial & repaint · 2025

Large-scale repair of a weathered industrial wall: patch repairs, a full skim coat to even out the surface, then a new protective paint finish.

Wall with patch repairs and first skim coat — 01Patch repairs

Skim coat being applied from a scissor lift — 02Skim coat

Wall fully skim coated and ready for paint — 03Surface complete

Finished wall painted white — 04Finished

Recreation centre sports floor

Floor repair & recoating · 2025

Repair and recoating of a large indoor sports floor, including setting out and repainting the court markings.

Finished floor and new court markings

CSIS team setting out court markings across the sports hall — Setting out the court lines

Team member marking out a line on the floor — Marking out by hand

Residential

Architectural concrete homes and landscapes, finished so the concrete reads exactly as the architect intended.

Mount Maunganui residence

Board-formed concrete remedials

Remedial finishing to a board-formed concrete entry wall and outdoor fireplace. Form joints and surface marks were repaired and blended so the crisp timber-board lines read cleanly from every angle.

Board-formed concrete outdoor fireplace and bench on a patio — Outdoor fireplace and bench

Board-formed concrete entry wall with stepping stones — Entry wall

Point Chevalier residence

Architectural concrete remedials

Remedial finishing to a striking board-formed concrete home. Formwork marks and surface irregularities were carefully repaired and blended so the timber-board texture reads cleanly across every wall.

Board-formed concrete facade of a Point Chevalier home with large glazed openings — Board-formed concrete facade

Close view of the vertical timber-board texture on the concrete walls — Timber-board texture

Auckland residential landscapes

Concrete formwork repairs

Formwork repairs to board-formed retaining walls, planters, steps and outdoor features on architecturally designed Auckland homes. Blowholes, form joints and surface defects were repaired and blended to match the timber-board texture before landscaping.

Board-formed concrete retaining wall beside a home entrance — Entrance retaining wall

Board-formed concrete planter and steps — Planter and steps

Tiered board-formed retaining walls and stairs — Tiered garden walls

Board-formed concrete outdoor feature wall — Outdoor feature wall

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