Quick Answer

A polished finish is built step by step, and every grit stage has a job to do. Restoring old terrazzo is a 6-stage workflow: patch cracks, abrade with metal-bond diamonds (30, 60, 120 grit stage), densify, burnish with resin pads (200, 400, 800, 1500, 3000), and burnish. The workflow exposes the aggregate and brings back the original mirror finish.

For machine-matched tooling, browse our Diamond Resin Polishing Pads for Concrete & Terrazzo... range.

Why Terrazzo Is Different

What matters most in this stage.

Use softer metal bonds and lighter pressure than you would on raw concrete.

Miss this step and the gloss will not come up evenly.

Step by Step Restoration

The practical details.

Explore the full range in our resin burnish pads category.

• Patch. Fill cracks and missing aggregate with matching terrazzo epoxy resin. Let cure 24 hours.
• Burnish. Use a high-speed burnisher (1500+ rotations per minute) with a black or white pad to bring up the mirror finish.
• Metal abrading. Start at 30 grit stage to strip old sealing layer and stains, after that 60, then 120. Use a planetary grinder for flatness.
• Inspect. Note cracks, hollow areas, and missing chips. Photograph before.
• Resin burnishing. Run through 200, 400, 800, 1500, 3000. Our resin burnish pads is ideal for terrazzo.
• Densify. Apply lithium or sodium densifying sealing layer. Let soak 30 minutes.

Crews that rush this part rarely get a mirror finish.

Frequent Restoration Mistakes

Key points for the polishing sequence.

• Burnishing too early. Wait until 1500 grit stage is complete.
• Skipping densifying sealing layer. Without it, the floor will not hold a mirror finish.
• Starting too coarse. On old terrazzo, 30 grit stage can pull out aggregate chips.

This stage decides how much reflection the floor finally shows.

Timing Your Call A Professional

What matters most in this stage.

Residential and small commercial floors are achievable with a 580 mm planetary grinder.

Miss this step and the gloss will not come up evenly.

Frequently Asked Questions

Q: Can I old waxed terrazzo be restored?

A: The practical answer is, Yes, but the wax must be stripped first with a chemical stripper, then ground through the full sequence.

Q: How frequently does terrazzo need re-polishing?

A: For most jobs, With proper maintenance, 5-10 years. Weekly fine dust mopping and occasional burnishing keep it looking new.

Q: Do you need terrazzo cheaper than new polished concrete?

A: In short, Restoration is much cheaper than stripping and replacement. Expect $25-50/m2 depending on condition.

Looking for the right tool? Check our 5''/125mm Diamond Resin Polishing Pads for Concrete .... Looking for the right tool? Check our 3'' Metal Bond Diamond Grinding Disc with 4 Segments.

Conclusion

The finish is the sum of the stages - stay disciplined and the floor shines. Reach out to JOY TECH for metal-bond and resin pads selected specifically for terrazzo.