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Mechanical Polished Concrete Is the process by which the concrete is chemically hardened and mechanically polished. Mechanical Polished Concrete differs from the topical sealed polished concrete process in that the “sheen” is not obtained by any kind of sealer, but by the concrete itself being “mechanically” polished to a flat and smooth reflective surface.
This surface is still protected, but with a high quality penetrating sealer, designed to stop or delay any penetration. This process gives the polished concrete floor a far greater appeal and durability than if coated with a topical sealer. The Polished Concrete Specialists are proud to be the first to introduce the Mechanical Polished Concrete process to Western Australia in 2002 and have been improving it ever since.

GRINDING

Concrete grinding is the process by which the concrete floor is flattened and/or aggregates are exposed.  A 6 to 80 grit diamond coarse abrasive tool is applied to the concrete with the purpose of either exposing diverse levels of aggregates, or simply flattening the surface. A deeper grind will result in greater aggregate exposure.

HONING & POLISHING

Concrete honing is the process in between grinding and polishing. An increment process ranging from 100 to 200 grit diamond medium abrasive tool is applied to the concrete with the purpose of either transitioning the deep grinding scratches into finer abrasions, ready for polishing, or, to be left honed, where a lower sheen and/or a non slip surface is required. Concrete honing can also be applied without previous grinding, when none or only some exposure of stones is requested.

Concrete polishing is the process following honing. An increment process ranging from 400 to 3000 or higher grit diamond fine abrasive tool is applied to the concrete after honing. The purpose is to create smaller scratches and therefore a smoother surface so enabling light to reflect. The higher/finer the polish/grit, the greater the light and sheen.

GROUTING

Concrete grouting is the process by which the concrete surface porosity is minimized. Concrete is by nature a porous product. When poured, concrete contains water particles that become trapped in the concrete and evaporate during curing time, leaving small pockets of air. During the grinding process these pockets create small holes creating a porous surface on the concrete. Grouting is the process by which these holes are closed.

HARDENING

Concrete Hardening is the process by which the concrete surface is solidified.

Concrete hardening, also known as “densifying”, is obtained by a chemical reaction between a liquid concrete hardener and the concrete surface. The porosity formed by the concrete water evaporation, as well as causing holes, as explained in the “GROUTING” process, compromises the concrete uniformity and therefore causes the surface to be more susceptible to scratching and staining. The additional cementitious material formed by the reaction between the concrete hardener and the free lime in the concrete, creates a tightening to minuscule pores, giving the concrete a greater density and hardness. Once the hardener is applied, the performance from this reaction can continue to improve for up to 2 months.

The outcome of this process results in diverse benefits: it hardens the surface, it minimizes pulverization and reduces penetration. Additionally, it enables the concrete surface to be polished at higher grits.

SEALING & BUFFING

Concrete sealing is the process by which the concrete surface is protected with sealers, enhanced and/or darkened.

There are many types of concrete sealers that generally fall under two categories: topical and penetrating. The type of sealer will be determined by the area in which it is being applied – outdoor verses indoor, surface preparation, floor usage and desired look. A true Mechanical Polished Concrete floor is always sealed with a penetrating sealer.

Concrete buffing is the final process. When the polished concrete floor is sealed with a penetrating sealer, the purpose of buffing is to remove any excess sealer. When sealed topically the purpose is to exfoliate and/or burnish the surface of the topcoat sealer.

  • We so trust Andrew and the team of Polished Concrete Specialists that we got them to do our display floor in our Perth branch

    Peter Cresswell
    Peter CresswellHUSQVARNA CONSTRUCTION
  • We where so impressed with the outcome we commissioned PCS to present all of our showroom floors

    Peter Jones
    Peter JonesTRADELINK
  • PCS transformed our garage into a creative masterpiece, their advice and expertise is unrivalled

    Mike Gleadell
    Mike GleadellTELOS BRAN
  • It is amazing what PCS where able to do with the damaged and uneven 90 year old concrete floor in the Katanning store

    Graham Norris
    Graham NorrisIGA