Australian concrete journal

Custom Concrete Concepts

Polished floors

Internal concrete floors as a finished surface — sheen, densifiers, heating, hospitality wear and the maintenance story that contractors rarely finish.

Polished concrete floor in a 1960s office building in Mascot, New South Wales
Photograph by Kgbo. Polished concrete floor, 1960s office building in Mascot, NSW, 2022. Wikimedia Commons, CC BY-SA 4.0. Full attributions sit on the image credits page.

A polished floor is not a product you unroll. It is a sequence of cuts through a slab that was probably poured for another reason: a warehouse, a 1960s office, a new house whose builder left the concrete “to be finished later”. Later is where the journalism starts.

Australian interiors ask a lot of that later. Fine red dust, school bags, restaurant dinner service, winter sun through north glass, a dog, a piano. The sheen you chose on a sample board will not be the sheen you live with if the mix was lean, the trowel burn is patchy, or the densifier was treated as optional.

This hub covers polished floors in houses, honed versus polished sheen, grinding and densifiers, retail and hospitality floors, and in-slab heating.

The Mascot floor on this page is a reminder that polishing is often archaeology. You reveal what is already there. If what is there is ugly, no grit sequence will invent a terrazzo that was never batched.

Articles in this hub

A smoothly polished concrete floor surface

· 29 October 2024

In-slab heating under polished floors

Heating a slab and then polishing it is one system, not two trades who meet at handover. This piece compares hydronic and electric, cover to pipes, thermal mass from Hobart to Brisbane, cracking risk, when to polish, energy honesty, and the rugs that undo the heat.

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A polished former workshop floor in everyday use

· 5 August 2024

Polished concrete in retail and hospitality

A shop or dining room asks a polished slab to work after closing as well as in the photograph. This piece covers chair scrape, wine and oil, trading hours, acoustics, night cleaning, heritage fitouts, and the moments when vinyl or timber is the kinder floor.

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Close work removing micro-roughness on a concrete floor

· 18 June 2024

Grinding, densifiers and the maintenance myth

Polished concrete is sold as maintenance-free more often than it is explained. This piece covers what grinding does, how lithium and sodium densifiers work in principle, silica dust, pH-neutral cleaning, re-guarding, edge work and the patchy slabs that no chemistry will even out.

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A high-grit polished concrete floor

· 11 March 2024

Honed versus polished — choosing a sheen

Sheen on a concrete floor is a grit sequence, not a catalogue finish. This piece sets honed matte against gloss, and deals with north-glass glare, slip, trowel marks, densifiers versus topical guards, and the way maintenance quietly raises the shine you thought you had locked.

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Polished concrete floor in a 1960s office building in Mascot, New South Wales

· 22 January 2024

Polished concrete floors for Australian houses

A house slab can be a finished floor if you decide, before anyone trowels, whether you are polishing a new pour or grinding what a builder left. This piece covers exposure, joints, dogs, rugs, seasonal comfort and the sample grind that should happen before you commit a living room.

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