Terrazzo flooring originated centuries ago from the mosaic studios in Italy. The story goes that the byproduct of the day’s work was swept onto the terrace where it was trampled into the surface underfoot.

Today, terrazzo chips are derived from mined marble, granite, quartzite, quartz or silica pebbles. Chips are added to a cementitious mixing compound that acts as a binder, holding the suspended chips in place.
As substitutes for the cement compound, newer mixing compounds have been developed such as latexes, vinyls, rubbers, epoxies and polyesters, which are all less sustainable.
When the mixture is hardened, the surface is ground, polished and sealed. Components of conventional sealers, primers and resins are generally derived from petrochemicals. More sustainable and most inert are sodium-silicate sealers, referred to as water glass. Water based acrylic sealers are also available.
Sustainability issues can include mining of the raw materials; this has generally moved underground, reducing most environmental issues of soil erosion, pollutant runoff and habitat loss. Terrazzo flooring products made from recycled glass stone and glass aggregate are the most sustainable options.
When curing is complete, terrazzo is basically inert. The results are a very hard surface which performs well and requires only periodic maintenance.
Installation requires dividers which separate and accent the mixture. Traditionally these dividers have been metal. Today, vinyl (PVC) is often used. GreenSage does not recommend PVC. You can request that your installer use metal. Installation over some surfaces may require chemical bonding agents.