Burnished Concrete Floors, Ground and Sealed to a Smooth Cream Finish

Slab Assessment

We test hardness and check for cracks, patches and colour variation. Because a burnished finish leaves the cement cream on show, slab condition drives the result more than on a deeper grind.

Preparation

Existing tiles, adhesive, paint or coatings come off in-house. The surface is taken back to clean, sound concrete before finishing starts.

The Burnish Pass

Diamond tooling takes a light pass, smoothing the surface and evening the sheen while leaving the cement cream intact. The cut is deliberately shallow. Going deeper would expose aggregate and turn it into a honed floor.

Repairs

Cracks and surface defects are filled with colour-matched filler and blended in. These repairs show more on a burnished floor than on exposed aggregate, so we take extra care matching them.

Sealing

This matters more here than on any other finish, because cement cream is porous. Interiors get a penetrating, stain-resistant sealer. Outdoors gets a UV-stable, breathable one. Two coats minimum.

Handover

Light foot traffic straight away, full cure in 24 to 48 hours. We leave the site clean and hand over care instructions.

Burnished concrete is a ground and sealed concrete floor finished at the lowest level of aggregate exposure. The grinding takes off just the top surface, so you keep the smooth cement cream and very little stone shows through. The result is a soft, low sheen rather than a mirror gloss. The term is used two ways in Australia, which causes a lot of confusion. Some concreters use burnished, or burnt finish, for a slab power-trowelled to a sheen while it is still curing. In the polished concrete trade it means the cream level of exposure on a ground floor. We do the second: we grind cured slabs. If another trade has quoted you burnished concrete, tell us what you are after and we will confirm which finish you are actually looking at.

Three things are worth knowing before you commit. Because very little aggregate is exposed, you are looking at the cement cream, and cream varies across a slab, so expect some natural colour variation and mottling. It is a floor finish, not a coating, so any cracking that develops in the slab underneath will show. And a burnished surface is more absorbent than a polished one, so sealing quality matters more. None of these are dealbreakers. They are the reason we assess the slab before quoting rather than after, and why we do not recommend burnished for every job.

It can if it is not sealed properly, and this is the most common complaint people raise about burnished floors. With minimal aggregate exposed there is more cement paste at the surface, and cement paste is porous. Oil, wine, and acidic spills will mark an unsealed or under-sealed floor. We apply a penetrating sealer that soaks into the surface rather than sitting on top, and we specify a higher-spec sealer for kitchens and hospitality. Wipe spills promptly and use a pH-neutral cleaner and the floor holds up well.

Both are ground and sealed with a matte to low-sheen result. The difference is how deep the grind goes. Burnished stops at the cream layer so almost no stone is exposed and the floor reads as a smooth, even surface. Honed goes deeper and brings up salt-and-pepper or fuller aggregate, so you see the stone in the slab. If you want the concrete to look uniform, go burnished. If you want to see the aggregate, go honed.

Hiring a hand grinder and doing a small area is possible, but getting an even result across a full floor is difficult. The hard parts are keeping the grind consistent so you do not end up with visible swirl marks or patchy exposure, managing silica dust safely, and choosing and applying the right sealer. Commercial planetary grinders and dust extraction are what make the finish even and the work safe. If you want to talk through whether your project suits a DIY approach, call us and we will give you a straight answer.

It comes down to how far the grinding goes and how much sheen you end up with. Burnished sits at the lighter end: ground smooth, sealed, soft sheen, with very little stone showing. Honed goes further and exposes more aggregate for a matte or satin surface. Polished runs through the finest grits with a densifier applied between passes to produce a high-gloss, reflective floor. Burnished is usually the most economical of the three because it takes fewer passes.

Yes. Grinding a cured slab is the core of what we do. Existing slabs often produce a better result than a fresh pour because fully cured concrete is harder and more stable. We assess the slab first, checking hardness, cracks, patches and any existing coatings, then grind and seal to the finish you are after.

It depends on the size of the area, the condition of the slab, and whether anything needs removing first. Tiles, adhesive or old coatings add preparation time. Mobilisation costs for commercial-grade equipment are much the same regardless of area, so smaller jobs carry a higher rate per square metre. Send us the details of your project and we will come back with a clear quote, usually the same day.

Yes, and we do it in-house. Most floor grinders do not handle tile removal, which leaves you coordinating two trades. We remove the tiles, grind off the adhesive bed underneath, repair the slab, then burnish and seal. One team, one quote, from demolition through to handover.

A sealed burnished floor has a soft sheen rather than a gloss, so it holds more grip than a polished floor. For wet areas, outdoor entertaining and pool surrounds we adjust the grind and specify a sealer with a slip-resistant additive. Tell us where the floor is going and we will match the finish to it.

Yes. Outdoor floors are ground to retain a little more texture for grip and sealed with a UV-stable, breathable sealer built for Queensland conditions. It suits driveways, patios, pathways and pool surrounds. Indoor floors get a penetrating, stain-resistant sealer instead.

Most jobs run one to three days on site depending on area and slab condition. Tile or coating removal adds time before grinding starts. The floor takes light foot traffic straight after sealing and reaches full cure in 24 to 48 hours. We confirm the timeline with you at quote stage so it can be slotted into your build programme.

No. We run dust extraction continuously through the grind, with HEPA filtration capturing silica dust at the tool. That means no plastic sheeting over doorways and no dust settling through the rest of the house or building. It matters on occupied sites and on renovations where people are still living in the home.

Sweep or vacuum regularly and mop with a pH-neutral cleaner. Avoid acidic or abrasive products, which break down the sealer. Depending on traffic, the sealer is worth refreshing every few years. We hand over care instructions when we finish, and we can come back and re-seal when the time comes.