What Does Grit Mean For Concrete Grinding?

So What Does Grit Mean In The Concrete Grinding Industry?

One critical factor in achieving a successful concrete grinding job is choosing the right diamond grit size. Diamond grit size refers to the size of the diamond particles embedded in the grinding tools. It plays a crucial role in determining the efficiency, speed, and quality of the grinding process.

The final piece of the puzzle is GRIT. Grit is generally the easiest component of the disc/plug to understand. Grit is used as a reference to describe the finishing qualities of the diamond disc/plug. The lower the number, the larger the piece of diamond (coarser grit). The higher the number, the smaller the piece of diamond (finer grit). Just like sandpaper, as the grit becomes smaller, the finish becomes smoother. Generally, in concrete grinding, 30 or 40 grit is about the coarsest required (Usually, 60-80 grit discs/plugs are used in the process of concrete polishing and not concrete grinding)

(Low Grit Number) – Are for faster prep work and for the removal of coatings.

(High Grit Number) – Are for smoothing, polishing, and final touch-ups.

Most diamonds are #16 grit – Which is very aggressive for cleaning up concrete slabs.

But they go all the way up to #3,000 grit – Which is for very fine polishing of concrete slabs.

You will mostly use #16 & #30 grit – For removal and prep work on concrete, anything above that is heading towards polishing the concrete slab.

Still Unsure? Talk To A Concrete Grinding Expert

Need Professional Concrete Grinding In Sydney?

While these tips help explain what grit means when it comes to concrete grinding, achieving a truly flat and durable surface usually requires specialised equipment and experienced operators. Professional grinding uses heavy-duty concrete grinders, industrial dust extraction systems, and precision tooling designed specifically for effectively Preparing Concrete Floors For New Flooring.

If you’re dealing with uneven concrete, adhesive residue, surface contamination, or high spots in a slab, professional concrete grinding in Sydney can restore the surface to a flat, clean condition ready for new flooring, coatings, waterproofing systems, or polished concrete finishes.

Our team specialises in slab levelling, adhesive removal, trip hazard correction, and complete surface preparation for residential, commercial, and industrial concrete floors across Sydney.

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