Prime Solid Plastering
Residential and commercial plastering and painting services
from Manukau to Milldale, Auckland

Structural concrete repairs that address the cause

A hairline crack or a patch of spalling on a column, slab or barrier rarely stays small. Auckland's coastal air and humid conditions drive moisture into the concrete, the steel reinforcing rusts and expands, and a cosmetic flaw turns into structural repair work and compliance issues.

Prime Solid Plastering carries out concrete repairs and remediation across internal and external structural projects for homeowners, developers, body corporates and trade clients. Every job begins with a thorough investigation - we trace cracks back to the source, treat the cause and rebuild the area with premium materials chosen for durability. 
  • Sika system: a repair compound designed to patch, strengthen, and protect concrete for the long haul.
  • Mapei Repair Systems: Trusted concrete repair and levelling compounds designed to restore cracked or damaged surfaces back to strength.
Our team holds specialised ICRI (International Concrete Repair Institute) credentials and brings two decades of hands-on experience to Auckland worksites.. To arrange a site visit and quote, send your project details through the Contact form.

Repairs that match colour and carry a guarantee


Patch-up work carries a three to five year guarantee depending on the scope. Concrete colour and texture are matched as closely as possible by adding dye during mixing.

We offer total exterior solutions, meaning concrete wall repairs can easily be bundled with your cladding work, and our professional painting services can be included to deliver a flawless, final finish.

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Concrete Repairs and Grouting in Auckland

  • Structural concrete repairs and remediation that restore strength and appearance
  • Specialist structural grout repair under columns and steel fixings
  • Concrete floor polishing, grinding and levelling for clean, even finishes
Concrete repairs across Auckland, from Manukau through to Milldale, for residential, commercial and body corporate sites.

Precision concrete grouting under columns and precast

Materials such as C212 are used in dry-pack grout beneath steel-fixed columns and for concrete crack injection into precast wall steel connections, bonding components together within the building structure.

Grout under steel baseplates transfers load from the structure into the foundation, so voids or failures compromise the load path.

Typical applications include:

  • Grouting under columns where steel and bolted fixings sit within the structure
  • Precast panel repairs and filling connections during construction
  • Structural grout repair around bolted assemblies and structural elements
  • Ready-made and custom concrete barrier repairs
Surface finishing on grouted assemblies sometimes ties in with interior plastering where exposed elements meet plastered walls.

Concrete floor levelling, grinding and polishing

Before carpet or timber goes down, the slab underneath needs to be flat, sound and properly prepared. Concrete floor levelling, cutting, grinding, polishing and patching are handled as one connected scope by the same crew, reducing handovers and keeping accountability in one place.

For exposed interior floors, finish levels for grinding and polishing suit the space and its use and options are discussed beforehand.

Existing slabs can be polished if structurally sound, with cracks and holes filled before grinding back to the chosen finish.

Frequently asked questions for Concrete Repairs & Grouting

Concrete damage usually stems from water ingress, steel reinforcement corrosion, ground movement, chemical exposure or age. Once moisture reaches the steel inside, it expands as it rusts and pushes the concrete outward, causing cracks and spalling. Catching small issues early prevents them turning into structural problems.

Lifespan depends on the system specified, the condition of the substrate and the loads involved. Prime Solid Plastering's concrete patch repairs carry a three to five year guarantee depending on the job.

Yes, structural sound concrete floors can be polished. This involves grinding back the surface, filling any cracks or holes, then progressively polishing to the chosen finish level. It suits garages, warehouses, retail spaces and residential floors looking for a hard-wearing surface.

Concrete repairs typically address localised damage such as cracks, spalls or surface defects. Concrete remediation is broader, investigating the underlying cause, treating affected reinforcement and restoring the structure. Remediation often involves several stages and applies to ageing buildings, barriers and infrastructure with more widespread deterioration.

Grout under steel baseplates and columns transfers load from the structure into the foundation. If that grout cracks, voids or fails, load paths are compromised and movement can occur. Precision concrete grouting restores full bearing contact, which is why specified structural grouting materials such as C212 are used on commercial and infrastructure projects.
Concrete Repairs & Grouting Summary:
  • What: Structural concrete repairs, concrete remediation, crack and spalling work, precision structural grouting under columns and precast, plus concrete floor polishing, grinding and levelling.
  • Where: Concrete repair services delivered across Auckland, from Manukau through to Milldale, including bridge-related highway work.
  • Who for: Homeowners, developers, body corporates, commercial clients and trade contractors needing structural concrete repairs, concrete grout repair or polished concrete floors.
Page: Concrete Repairs Auckland | Concrete Remediation North Auckland - Last updated: 28th July, 2026 | Site Map |