Terrazzo is technically a composite surface — chips of marble, granite, or other stone set into a cement or resin binder and ground smooth — rather than a single solid stone. That construction gives it a distinctive speckled look, but it also means restoration works a bit differently than it does on solid marble or granite.
Why Terrazzo Looks Dull Over Time
Years of foot traffic wear down terrazzo's polished binder and stone chips unevenly, and the surface can pick up ingrained grime in its naturally slightly porous matrix. Old topical coatings, common on many older terrazzo installations, also yellow and wear unevenly, which contributes to a hazy, uneven appearance.
Grinding and Honing the Composite Surface
Restoring terrazzo typically starts with removing any old topical coating and grinding down the surface with diamond abrasives to expose fresh, level material across both the binder and the embedded stone chips. This step is what actually removes old scratching and unevenness rather than masking it.
Polishing and Sealing for a Lasting Finish
After grinding, progressively finer polishing steps bring the surface to a smooth, glossy sheen, and a penetrating sealer protects the terrazzo without the yellowing and peeling issues common with older topical waxes and coatings. This modern approach requires far less frequent recoating than older maintenance methods.
Terrazzo in Commercial and Residential Settings
Terrazzo is common in older commercial lobbies and institutional buildings throughout Metro Detroit, though it also appears in some residential homes. Diamond Stone Restoration evaluates the binder condition and existing coatings before recommending a grinding, honing, and sealing plan.