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Everything you need to know about polished concrete floors in Australia — costs, finish levels, and the full grinding process
From cream polish to full aggregate exposure, this guide covers every stage of polished concrete floors in 2026 — including realistic cost per m², grit sequences, sealer types, slab preparation, and how to get the best result on new or existing concrete.
A practical guide for homeowners, builders, and commercial fit-out teams across all Australian states and territories
Polished concrete floors are created by mechanically grinding an existing or new concrete slab using progressively finer diamond abrasive tooling, then densifying and sealing the surface to achieve a hard, reflective finish. Unlike coatings or overlays, polished concrete is the actual slab surface itself — making it extremely durable, easy to maintain, and a popular choice for residential, retail, warehouse, and commercial spaces across Australia in 2026.
Polished concrete floor costs in Australia typically range from $50–$150 per m² depending on finish level, slab condition, and location. A basic cream polish on a good-quality new slab starts around $50–$70/m², while a full aggregate exposure with high-gloss polish on an existing slab can reach $120–$150/m² or more. Use the free estimator tool below to get a tailored cost range for your specific project.
Polished concrete floors offer an outstanding combination of longevity, hygiene, and aesthetics. They are seamless (no grout lines), resistant to staining when properly sealed, highly reflective (improving natural light in a space), and require no waxing or stripping. They are a particularly strong choice for open-plan homes, retail spaces, gyms, and commercial buildings where acoustic performance and indoor air quality are priorities.
Enter your floor area and finish requirements to get an instant 2026 cost estimate
The appearance of a polished concrete floor is primarily determined by how deeply the surface is ground during the initial coarse passes. The four standard finish levels — cream, salt and pepper, medium aggregate, and full aggregate exposure — represent progressively deeper cuts into the slab. Each level exposes more of the underlying aggregate and requires more machine time, which directly affects cost. Choosing the right level depends on the quality of your existing concrete, the aesthetic you want, and your budget in 2026.
Finish level is set during the initial coarse grinding passes. It cannot be changed after densifying — choose your level before work begins.
The following cost ranges reflect typical Australian contractor pricing for polished concrete floors in 2026. Prices vary by state — Sydney and Melbourne tend to be 10–20% higher than regional areas. These figures include grinding, densifying, and one coat of guard or sealer. Additional crack repairs, moisture testing, and decorative saw cuts are charged separately.
| Finish Level | Gloss Option | New Slab ($/m²) | Existing – Good ($/m²) | Existing – Repairs ($/m²) | Typical Grit Finish | Best For |
|---|---|---|---|---|---|---|
| Cream Polish | Matte / Satin / Gloss | $50–$75 | $60–$85 | $75–$100 | 400–1500 grit | Residential, offices |
| Salt & Pepper | Matte / Satin / Gloss | $60–$85 | $70–$95 | $85–$110 | 400–3000 grit | Retail, open-plan homes |
| Medium Aggregate | Satin / Gloss | $75–$100 | $85–$110 | $100–$130 | 400–3000 grit | Commercial, warehouses |
| Full Aggregate | Gloss (recommended) | $90–$120 | $110–$145 | $130–$160+ | 400–3000 grit | Feature floors, decorative |
Achieving a quality polished concrete floor is a multi-stage process that cannot be rushed. Each step must be completed correctly before moving to the next — skipping a grit stage or densifying too early leads to a cloudy, soft, or uneven finish that is very difficult to correct. Here is the complete process used by professional polished concrete contractors across Australia in 2026:
Before any grinding begins, the slab must be assessed for cracks, delamination, contamination, and moisture. Any existing coatings (paint, adhesive, tiles) must be removed. Cracks are filled with semi-rigid epoxy or polyurea filler. High spots are knocked back with a grinder and low spots are assessed for whether they will fill during the initial cut. A moisture vapour emission rate (MVER) test is recommended before sealing.
The first grinding passes use coarse metal-bond diamond segments (typically 16–30 grit) to open the surface, remove laitance, and achieve the desired aggregate exposure level. This stage determines whether the final finish will be cream, salt and pepper, medium, or full aggregate. Wet or dry grinding can be used — dry grinding with dust extraction is most common in residential and commercial settings in Australia.
After the coarse cut, the floor moves through transitional metal-bond or hybrid grits (50–100–200 grit) to progressively refine the surface texture and remove scratches from the previous pass. Each grit change removes the scratch pattern of the prior grit. This is the most time-consuming part of the process on existing slabs with surface variation.
A lithium silicate or sodium silicate densifier is applied to the floor and worked into the surface. The densifier reacts with calcium hydroxide in the concrete to form calcium silicate hydrate — hardening the surface, reducing porosity, and dramatically improving abrasion resistance. This is a critical step: polishing without densifying produces a soft, porous finish that wears quickly and stains easily.
After densifying, resin-bond diamond pads are used for the fine polishing stage (400 → 800 → 1500 → 3000 grit depending on the target gloss level). Each pass increases clarity and reflectivity. A matte or honed finish stops at 400 grit; a satin finish at 800; a high-gloss mirror finish continues to 1500 or 3000 grit. This stage is where the floor truly transforms in appearance.
The completed polished surface is protected with a penetrating lithium silicate guard or a topical sealer. Penetrating guards do not change the appearance of the floor and are preferred for commercial and high-traffic areas. Topical sealers add a slight sheen and provide stronger stain protection for residential kitchens and living areas. Reapplication is typically needed every 1–3 years depending on traffic and cleaning regime.
For the best polished concrete floor result, specify a premium concrete mix with a low water-to-cement ratio (0.45–0.50) and ensure the slab is properly cured for a minimum of 28 days before grinding begins. A well-cured, hard slab grinds more evenly, densifies more effectively, and produces a superior final finish compared to a soft, poorly cured slab. See your concretor about adding a polishing-grade mix design to your pour specification.
Larger floor areas generally attract a lower per-m² rate due to better machine utilisation. Complex shapes, narrow corridors, and tight corners require more edging work with hand-held grinders — which is slower and more expensive. Rooms under 20 m² often attract a minimum call-out charge that significantly increases the effective per-m² cost.
The biggest variable in polished concrete floor pricing is the condition of the existing slab. Significant cracking, delamination, previous tile adhesive, paint, or oil contamination all add preparation time and cost. A concrete structural assessment before quoting is advisable for older slabs — some surfaces are simply not suitable for polishing without extensive remediation.
Penetrating lithium silicate guards are included in most standard polishing quotes. However, if you require a topical urethane sealer for high chemical resistance (e.g., garage, commercial kitchen), or a coloured dye before polishing, these are additional line items. Dyes can add $8–$20/m² to the cost and must be applied after densifying but before the fine polish stage.
Capital city metro areas (Sydney, Melbourne, Brisbane) are typically 10–20% more expensive than regional areas for polished concrete floor work. Upper-floor jobs requiring equipment to be carried upstairs, or sites with restricted vehicle access, may attract a mobilisation surcharge. Always confirm site access requirements with your contractor before accepting a quote.
Hiring a concrete grinder from a hire centre and attempting to polish your own floor without experience almost always results in a poor outcome — uneven aggregate exposure, swirl marks, missed grits, and insufficient densifying. The concrete grinding machines available for hire are significantly less powerful than professional planetary grinders. For any area over 10 m², professional polished concrete floor contractors deliver a substantially better result and often work out cheaper when rework and hire costs are factored in.
Use the following simple formulas to quickly estimate your polished concrete floor project cost before contacting contractors for formal quotes in 2026:
Always add 10–15% contingency for crack repairs, edge work, and any unforeseen slab condition issues discovered during grinding.
These rates are for professional installation on a reasonably good-condition slab. Obtain a minimum of 3 written quotes for any project over $5,000.
CCAA provides free technical guides on concrete surface finishing, mix design for polishing, and slab quality — essential reading for anyone specifying a polished concrete floor in Australia in 2026.
Visit CCAA →AS 3958 covers concrete floor finishes and surface tolerances. AS 4586 specifies slip resistance classifications for pedestrian surfaces — both are relevant for polished concrete floor specification and compliance.
Standards Australia →Find licensed and insured polished concrete floor contractors through the Master Builders Association in your state. Using a registered member provides access to dispute resolution services and workmanship warranty protections.
Master Builders →