Our premium range of concrete services

The cost of polished concrete in Auckland depends on floor size, slab condition, and finish type. Most jobs fall between $60 and $130 per m2 + GST. Larger open areas (200m2+) can come in around $60 per m2, while detailed work in finished homes can reach $120-$130 per m2. We have a minimum charge of $2,250 + GST for small areas under 20m2. For a full breakdown by floor size and finish type, see our polished concrete pricing guide. Contact us for a free site assessment and accurate quote.

Polished concrete can be slippery when wet, however no more than polished tiles, vinyl, or wooden floorboards. Our system is tried and tested and passes slip resistance regulations. If slip resistance is a concern for your space, ask us about finish options - a matte or satin finish provides more grip than a high-gloss polish.

Mechanically polished concrete can last 20+ years with good maintenance. Because there is no coating to peel or replace, it outlasts most alternatives. It will dull over time with regular use - similar to timber or tiles - but a periodic rebuff restores the finish.

Comparatively, some other flooring options have different lifespans:

• Carpet: Typically lasts 5-15 years, depending on quality and maintenance.
• Vinyl: Can last 10-20 years, but may need replacing sooner in high-traffic areas.
• Hardwood: With proper care, hardwood floors can last 25 years or more.
• Tile: Durable and can last 20 years or more, but may require regrouting or repairs over time.
• Laminate: Generally lasts 10-20 years, depending on quality and wear.

The best time to polish is before paint, and ideally before plaster (gib stopping). Once the house is weathertight and gib lined, the polishing team has a clean, open shell to work on - no painted walls to protect, no fresh stopping to damage, and no fixed surfaces to mask off.

The slab should cure for at least 28 days before grinding begins. Skirtings, kitchen, bathroom and joinery should always go in AFTER polishing - this is especially important for heavier grinds, where removing several millimetres off the slab means skirtings installed beforehand can end up looking like they are floating above the floor. Once polishing is complete, the floor needs to be properly protected during the remaining build stages.

Cracks:

Small cracks can be filled with a specially formulated color-matched patch filler to create a seamless surface.

For larger cracks, a more extensive repair may be needed, such as cutting out the damaged section and patching it with new concrete.

Damage:

Surface damage, such as chips or scratches, can be repaired using patching compounds or fillers designed for concrete.

Deeper damage may require more extensive repairs, such as grinding down the surface to remove the damaged area and then patching it with new concrete.

Joints:

Control joints, which are intentional cuts in the concrete to control cracking, will be filled with a  specially formulated color-matched patch filler to prevent the edges chipping while grinding. These can be later recut at the discretion or left in depending on the movement of the concrete.

Expansion joints, which allow for the natural movement of the concrete, can also be filled with a flexible material to maintain a smooth surface.

It's important to address cracks, damage, and joints before polishing to ensure a uniform and high-quality finish. Your polishing professional can assess the condition of your concrete floor and recommend the best approach for repairing and preparing it for polishing.

Diamond Shine Concrete services all of Auckland, including Central Auckland, the North Shore, East Auckland, West Auckland, and South Auckland. We travel across the region for both residential and commercial jobs. If you're unsure whether we cover your area, just get in touch - we're happy to help.

Yes. We offer free site visits and quotes across Auckland. We prefer to see the floor in person before quoting - this lets us assess the concrete condition, recommend the right finish, and give you an accurate price with no surprises. Get in touch to book yours.

Polished concrete is ground and refined to a high sheen using progressively finer diamond tooling, resulting in a glossy, reflective surface. Honed concrete follows the same grinding process but stops at a lower grit level, leaving a smooth, matte finish with little to no reflectivity. Honed is popular for residential interiors and bathrooms where a warmer, less industrial look is preferred. Both are durable and low-maintenance.

Yes. Diamond Shine Concrete handles both residential and commercial projects across Auckland. On the residential side, we work on new builds, renovations, and existing slabs in homes of all sizes. Commercially, we service retail stores, offices, warehouses, industrial facilities, and automotive workshops. The process and equipment vary by project type - we tailor our approach to suit the space and the finish required.

In most cases, yes. If your floor has an existing sealer, polyurethane, epoxy, or other coating, we can grind it back to expose the raw concrete beneath and start the polishing process from scratch. The condition of the concrete underneath determines what finish is achievable. We assess this on a site visit before quoting so you know exactly what to expect.

For the best result, clear all furniture and belongings from the rooms being polished. If you are removing carpet yourself, you can also pull up the tack strips - this saves time on site. We handle all dust extraction and floor protection, but removing breakables and covering nearby surfaces helps keep things running smoothly. For new builds, polishing should happen after gib and plaster but before skirtings and cabinetry are installed.

For 200-500m2, expect $60-$80 per m2 + GST. For 500-1,000m2, $50-$70 per m2 + GST. Floors over 1,000m2 start from $45 per m2 + GST. The exact price depends on slab condition, grind depth, and access requirements.

Polished concrete is a process that involves grinding and polishing a concrete surface to achieve a smooth, glossy finish. It is commonly used as a flooring option in both residential and commercial spaces.

20+ years with good maintenance. The only periodic maintenance is a rebuff every 3-5 years to restore the sheen. This makes it one of the most cost-effective commercial flooring options over a 10-year lease.

Some benefits of polished concrete include its durability, low maintenance requirements, and aesthetic appeal. It is also environmentally friendly and can help improve indoor air quality.

Yes, if there is a sound concrete slab. After removing the existing surface covering, we assess the slab condition and determine the right approach. Most existing commercial slabs need a medium-to-heavy grind.

Polished concrete undergoes a grinding and polishing process that regular concrete does not. This process enhances the appearance, durability, and stain resistance of the concrete surface.

Yes. All of our finishes, from satin through to high gloss, meet the slip resistance standards required for strict-compliance commercial projects such as supermarkets and malls. The finish level adjusts how much grip you have within that compliant range. For wet zones we increase the grind depth in those areas to add texture, rather than relying on coatings or additives. Read more in our slip resistance guide.

In general, most concrete can be polished. However, the quality of the final result can depend on factors such as the quality of the concrete mix, the level of aggregate exposure desired, and the condition of the existing concrete surface.

Yes. For retail and hospitality businesses, we can stage the work in sections and schedule grinding during off-hours where possible. Full closure is always preferred for the best result, but we work with your schedule.

Mechanically polished concrete lasts 20+ years versus 5-10 years for epoxy. Epoxy coatings can peel, yellow, and delaminate under heavy use, particularly with forklift traffic. Polished concrete has no coating to fail. Read our grind and seal vs mechanically polished guide for a full comparison.

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