Quick Answer

Cement terrazzo grinds like concrete: start with metal-bond diamonds and move through standard resin pads from 50 to 3000. Epoxy or resin-bond terrazzo is thermoplastic — the matrix softens and smears under heat — so skip aggressive metal grinding, run cool with light pressure, and jump from 200 grit directly to soft resin or copper-bond transitional pads. Using concrete pads on epoxy terrazzo leaves melted ridges, pull-out chips, and a dull haze.

What Is the Difference Between the Two?

Cement terrazzo is marble or granite chips set in white Portland cement. It is hard, porous, and behaves like polished concrete. Epoxy terrazzo (also called resin-bond or polymer terrazzo) uses epoxy or polyester binder instead of cement. The binder is smoother and thinner, and it softens around 60–80°C. That heat sensitivity changes everything about how you polish it.

Why Heat Destroys Epoxy Terrazzo

A heavy metal-bond diamond grinding a dry epoxy floor builds heat fast. The epoxy surface softens, the diamond drags a smear of polymer across the chips, and the pad loads up with melted binder. Once smeared, the floor looks dull and wavy no matter how fine the grit. The fix is prevention: light pressure, several passes at lower weight, and keep the pad cool with dust extraction or wet polishing.

Recommended Sequences

Stage	Cement terrazzo	Epoxy / resin terrazzo
Leveling	Metal-bond 30–50 grit	200 grit soft pad, light pressure — do not metal-grind
Transition	Hybrid / transitional 50–150	Copper-bond or soft resin 200–400
Refining	Resin 400 → 800 → 1500	Soft resin 400 → 800 → 1500, cool passes
Gloss	3000 + burnishing	1500–3000 soft resin, low machine weight

Pad Choice for Each Type

• Cement terrazzo: our standard Diamond Resin Polishing Pads for Concrete Terrazzo Floor (JOY-RFP-01) follow the same sequence you use on concrete.
• Transition step: the Copper Bond Diamond Transitional Polishing Pads (JOY-RFP-C2) cut the scratch pattern between metal and resin without heating epoxy floors.
• Hybrid option: the Typhoon Type Diamond Copper Bond Hybrid Resin Polishing Pads (JOY-RFP-C1) combine copper and resin for a cooler cut on polymer matrix.
• Final gloss: finish with a light burnishing pass rather than a heavy 3000 grit; high weight on epoxy terrazzo backfires.

Signs You Are Polishing the Wrong Way

• The floor gets tacky or the pad loads with black or colored polymer — you are melting epoxy. Stop, cool down, switch to soft pads.
• Chips pop out leaving holes — the bond is too aggressive for a resin matrix. Drop to a softer pad.
• A rainbow haze appears after 800 grit — heat smearing. Rebuild gloss with 1500 soft resin at low speed.
• The cement terrazzo floor looks blotchy — you skipped the densifier. Cement terrazzo needs hardener just like concrete.

Frequently Asked Questions

Q: Can I wet polish epoxy terrazzo?

A: Yes, wet polishing is recommended for epoxy terrazzo because water holds the temperature down. Keep the floor flooded and use the same soft resin sequence.

Q: How do I tell which terrazzo I have?

A: Cement terrazzo is porous, cold to the touch, and accepts a densifier. Epoxy terrazzo is smoother, non-porous, and often has thinner chips set in a glossy binder.

Q: Can existing terrazzo be restored without re-grinding?

A: Most old terrazzo is cement-based. Start at 200 grit with resin pads and build up; reserve metal-bond grinding for deep damage only.

Conclusion

Cement terrazzo is concrete in a polished finish; epoxy terrazzo is a heat-sensitive polymer. Match the pad bond to the matrix, keep epoxy floors cool, and never pull a metal-bond diamond across a resin binder. Contact JOY TECH for pad sets matched to terrazzo type and floor condition.