Quick Answer

Grinding removes material and levels the surface with coarse metal bond tools; polishing refines the scratch pattern and builds gloss with resin bond tools. Polishing usually includes grinding, but grinding alone is just surface preparation.

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Grinding

• Goal: flat, level, open surface
• Tools: metal bond discs, segments, cup wheels
• Grits: 6# to 200#
• Result: matte, uniformly scratched surface

Polishing

• Goal: smooth, glossy, dense surface
• Tools: resin, hybrid and burnishing pads
• Grits: 50# to 3000# and burnish
• Result: reflective, easy-to-clean finish

Where They Overlap

The transition zone (100#-400#) is both the end of grinding and the start of polishing. Hybrid and ceramic bond pads live here, removing metal scratches and preparing the gloss.

When to Stop at Grinding

Grinding alone is enough for non-slip industrial floors, prep before coatings, and repairing damaged surfaces. Polish only when the client wants gloss, low maintenance or a densified surface.

Frequently Asked Questions

Q: Can you polish without grinding?

A>Only on a floor that is already flat and smooth - grinding fixes the profile, polishing refines it.

Q: Is polished concrete slippery?

A>Glossy polished concrete can be slippery when wet; specify anti-slip treatments or aggregates for wet areas.

Q: Which costs more?

A>Polishing costs more per square metre because of the extra steps, densifier and finer consumables.

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Conclusion

Grinding builds the base, polishing builds the shine. Understand which stage your floor needs and price the job for the right scope.