Concrete Flooring

Concrete flooring buyers guide

Concrete has evolved far beyond the grey supermarket slab. Advances in polishing, staining, heating and sealing mean a concrete floor can be the hero finish in a luxury coastal bach, a high-traffic retail fit-out or a rural stable. This guide covers the key decisions so you can specify with confidence.

1. Choose the right finish

• Polished concrete floors: Diamond-ground then densified to create a reflective surface that resists dusting. Available in gloss, satin and matte, it’s the most searched option in New Zealand (polished concrete floor NZ).
• Concrete floor paint: A fast, budget-friendly way to add colour or zone-marking-ideal for garages and studios.
• Acid stained concrete floors: Reactive stains deliver mottled, marble-like tones that won’t peel.
• Commercial concrete floor sealer: Clear or pigmented; protects decorative finishes and makes routine cleaning easier.
• Heated concrete floor: Hydronic or electric circuits embedded in the slab provide gentle, even warmth.

2. Performance factors to tick off

Moisture control: Acceptable moisture content in concrete for laminate flooring is ≤75% RH, and similar limits apply before applying paint or sealer. Use a surface or in-slab test to confirm concrete moisture content for flooring.

Level & flatness: Self-levelling concrete floor leveler products can correct irregularities before polishing or installing overlays.

Slip resistance & code: Where public access is expected, check NZ Building Code clause D1/AS1 for minimum slip ratings. Read the guideline.

Acoustics: Hard floors can transmit impact sound. Combine with rugs or specify acoustic underlay from our substrate & underlay range.

3. Installation sequence

From grinding to final polish, the process is dusty and loud. A professional concrete floor grinder fitted with HEPA extraction shortens programme and protects air quality. Typical flow:

• Initial coarse grind removes laitance.
• Crack repair or fixing concrete floor imperfections.
• Surface densifier application.
• Progressive finer grinds.
• Concrete floor sealer or wax.

For composite steel deck concrete floor systems on multi-storey projects, coordinate penetrations early to avoid costly core drilling.

4. Cleaning & maintenance

Daily care is as simple as a microfibre mop; however, wash concrete floor surfaces periodically with a pH-neutral concrete floor cleaner. Cleaning concrete floors with vinegar is popular but can etch polished finishes – diluted solutions and thorough rinsing are essential. For commercial spaces, engage a concrete floor cleaning company for annual re-polish.

5. Budget benchmarks

• Honest slab grind and seal: from $75 – $90/m².
• Full exposure polished concrete: $100 – $140/m² depending on aggregate reveal.
• Specialty stains or epoxy coatings: add 20 – 40%.
• Under-floor heating: allow $80 – $140/m² for supply and install.

While upfront costs can exceed laminate or vinyl flooring, life-cycle costing often favours concrete over a 30-year term.

6. Pairing concrete with other floors

Using contrasting finishes can define zones and improve acoustics. Consider:

• Warm timber transitions with wood flooring
• Quiet bedrooms finished in plush carpet flooring
• High-spec bathrooms with resin flooring or glass flooring
• Durable entry zones protected by entrance matting or rubber flooring
• Cost-effective overlays such as laminate flooring if the slab is not architectural grade.

7. Next steps

Ready to shortlist products? Browse the full Finishes category or jump straight into concrete flooring below. Compare spec sheets, order samples, and connect directly with New Zealand’s leading manufacturers and installers.

Tip: Save time by uploading your plans and letting suppliers quote for areas, sealers and colour systems in one go.