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Polished Concrete


Can All Concrete Be Polished?

The first thing to understand is that concrete is not a uniform product! Each job will present different conditions and challenges that may require you to modify your normal procedures.

Almost any structurally sound concrete floor, whether new or old, can be polished. However there are some exceptions, for example with new floors no special mix design is required to achieve good results – although the floor should be in place at least 28 days before polishing begins to ensure adequate curing.

Some retail and warehouses facilities that plan to polish their floors after placement may specify a floor that is as smooth as possible to minimise the polishing steps required.

Polished concrete is a concrete floor that has been chemically treated and ground down to a smooth, shiny surface with progressively finer diamonds.

Fail to Prepare, Prepare to Fail

Existing floors typically require some surface preparation prior to polishing to remove dirt, grease, coatings or blemishes. Bear in mind though that floors that are wavy, need extensive patching or are extremely porous may not be good candidates for polishing.

In fact, getting the substrate preparation right is a critical aspect of any polished concrete project, as if the concrete is not up to the task at hand then the finish will never achieve the desired aesthetics or functionality. The concrete should be cleaned, flattened and given a light texture for the new coating to key into – especially if the concrete is old or has seen some extensive use.

Grinding is normally the preferred process to achieve this. Why is grinding the best method to prep a surface you ask? Well, grinding enables you to remove old floor coverings such as epoxy, paint, carpet adhesive and self-levelling compounds while simultaneously levelling out the underlying concrete surface and creating the ideal surface for further treatment of your floor – all in one action!

Wherever possible during a refurbishment, it is better to retain the substrate instead of destroying it along with the previous floor coating. Doing this means that you avoid the need to use a self-levelling compound and incur unnecessary material costs in the form of extra coverings to fill out irregularities, which are both expensive and time-consuming.

When in doubt about the best course of action, consult with your equipment and material supplier’s technical representative for recommendations on how to proceed.

So in answer to the question in the title – as long as the concrete is of a high enough quality and it is properly prepared prior to working on the finish, then there should be no reason why a high-end polished concrete floor cannot be created.

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Patrícia Gabriel

7 thoughts on “Can All Concrete Be Polished?”

  1. I have enjoyed reading this wonderful article about concrete polishing. Really, entire discussion is more helpful and all the tips are more effective too. I am very glad to go through this kind of helpful article. Thanks for sharing a nice article.

  2. I like that you mention how most floors will require preparation before they’re able to be polished. It makes sense that the natural imperfections in the concrete can make it very difficult for a polish to look and feel nice. I’ll have to keep this in mind for my concrete flooring because having it ground down and prepared before it’s polished could help ensure the finish lasts a long time and doesn’t any major hiccups along the way.

    1. Kate Hassall says:

      Hi Tyler,

      Thanks for your comment – If you have any other questions please get in touch with our Flowcrete Australia team!

  3. I have been thinking about getting a concrete polishing supplier for a little while now. It would be helpful to know about the various methods that can make this possible. Grinding sounds like a good process and a great way to get results.

    1. Dan Ash says:

      Hi Camille
      There are quite a few different polishes, colourings, sealers and grinding processes that can go into a polished concrete floor and can depend on the end result that is desired. These guys might be a good starting point to discuss the types of options that are available –

  4. Santeri says:

    Thank you for an interesting post, I was thinking about the same question. Polishing a floor seems like a lot of work, especially with all the surface preparation that has to be done before polishing. But I think, when everything is done right and properly, all the work pays off in the end. Like on the second photo, the end result can be really beautiful!

  5. It’s good to know that an existing concrete floor will require some preparation before being polished. My boss wants to polish the concrete in the warehouse so that it looks more impressive to visitors. I want this to go well for him, so I’ll pass this information along to him for his benefit.

Comments are closed.

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