Polished concrete floor, various grit finishes (100mm slab with 1-3mm ground/polished surface)
Polished concrete flooring is produced by mechanically grinding and polishing an existing or newly poured concrete slab using progressively finer diamond-impregnated abrasive pads — typically from 30-grit metal bond tooling through to 400-, 800-, 1500-, and 3000-grit resin-bond pads. The process removes the top surface layer (1–3 mm) to reveal the underlying matrix, which may be cream (minimal grind), salt-and-pepper (fine aggregate exposure), or full aggregate exposure depending on how deep the contractor grinds. A densifier — usually a colloidal silica or lithium silicate hardener — is impregnated mid-way through the grit sequence to react with free calcium hydroxide in the concrete and create additional CSH crystals, significantly increasing surface hardness and abrasion resistance. The final surface is either left as a honed finish (~400 grit) or taken to a high-gloss mirror polish (~1500–3000 grit). A penetrating or topical sealer is commonly applied to protect the surface from staining in commercial and residential settings. Concrete can be integrally coloured, surface-dyed, or left in its natural grey/aggregate tone. The 100 mm structural slab beneath performs as designed under AS 3600, providing thermal mass, fire resistance, and structural continuity. Suitable for residential homes, commercial offices, retail tenancies, café and hospitality fitouts, industrial warehouses, and institutional buildings.
- Residential slab-on-ground flooring
- Residential renovation / slab reveal
- Commercial retail tenancy
- Hospitality and food service
- Industrial warehouse and logistics
- Commercial office fitout
- Educational facilities
- Health and medical facilities
- Passive solar residential design
- Heritage industrial building conversion
The mechanical grinding and polishing of concrete floors emerged from industrial floor maintenance practices in the United States and Europe during the late 1990s. Early techniques adapted stone-polishing machinery to concrete, with the transition from coatings-dependent systems to grind-and-seal and true-polish systems occurring as diamond tooling improved through the early 2000s. The Concrete Polishing Association of America (CPAA) was founded in 2010 to codify standards for exposure levels and process documentation. In Australia, polished concrete gained significant traction from approximately 2005 onward, driven by the commercial fitout sector's appetite for industrial-modern aesthetics and architects specifying it for warehouses-converted-to-offices and hospitality venues. Victoria led early adoption, with Melbourne contractors refining techniques for the variable aggregate and cement content found in Australian-poured slabs. By 2010–2015, polished concrete had become a mainstream residential and commercial flooring specification, supported by local suppliers of Husqvarna and HTC grinding systems and Australian-formulated densifiers and sealers from companies such as Parchem (Nansulate), W.R. Grace, and Sika. The introduction of the 2020 silica dust WHS regulations transformed site practice, mandating wet grinding or full dust extraction across all states and territories, which increased per-project costs by approximately 10–15% but reduced occupational health liability significantly. Today, polished concrete is specified on an estimated 15–20% of new commercial fitouts in major Australian cities.
DISCLAIMER: This specification document is generated from the CLAD Materials Atlas Database. Information is for general guidance only and does not constitute professional engineering advice. Values are typical and may vary by batch, manufacturer, and production run. Verify suitability for specific project applications independently.