Published by Renew and Seal
Terrazzo contains stone or other aggregate in a cementitious or resin binder. A correct treatment depends on its particular construction.
Cleaning versus refinishing
Superficial dirt or maintenance residue may be cleaned. Worn finishes and physical scratching require different assessment.
Honing and polishing
Suitable abrasive sequences can refine surface wear and improve appearance, subject to the material and intended finish.
When grinding may be considered
Grinding is more invasive and should not be proposed without checking the floor construction, available thickness and condition.
Identify the binder before choosing a method
Terrazzo combines exposed aggregate with a binder that may be cementitious or resin-based. The visible chips do not reveal everything about the floor. A chemical or mechanical process suitable for the stone aggregate may not be suitable for the binder, the joints, a previous coating or a repaired area. Confirm what is known about the installation before choosing a treatment.
Which problem are you actually solving?
- Routine grime: may call for compatible cleaning and improved maintenance, not abrasive removal.
- Uneven gloss or light surface wear: may justify a controlled test area for honing or polishing.
- Cracks, loose sections or moisture: investigate the cause before cosmetic refinement.
- Thick old coatings or uneven previous work: may change the process, limitations and cost substantially.
Why is grinding a larger decision?
Grinding removes or alters surface material, so it is not interchangeable with a general floor clean. The actual floor thickness, condition, aggregate, binder and required finished level must inform the approach. Before and after photographs of a comparable test patch can help set expectations, but they cannot guarantee a whole-floor result.
Silica precautions during mechanical processing
Some stone and aggregate products contain crystalline silica. WorkSafe WA imposes controls for processing crystalline-silica substances, including abrasive polishing and grinding. Avoid uncontrolled dry processing and verify the current rules, equipment and risk controls for the specific material and job.
Information worth gathering
Locate original floor specifications or records if available; photograph worn and undamaged sections in the same lighting; note approximate area, old coatings, cracks, water exposure and the intended finish. See how to distinguish terrazzo and polished concrete, the stone symptom checklist, and terrazzo refinishing scope.
References
- WorkSafe WA — crystalline silica substances regulations
- Natural Stone Institute — general stone care and cleaning compatibility
Continue learning
Related stone restoration information: Terrazzo grinding and polishing. The exact treatment should always be selected based on the real material and condition.