Terrazzo is a unique tile or solid-poured flooring that is composed of marble chips of varying colors and Portland cement. Terrazzo tile has been around in many commercial applications for years, but has recently become more wide spread in the custom home building industry due to its unique style and durability.
Installing terrazzo tile starts out just like installing any other tile job-with preparation. The subfloor must be completely clean and free from debris. Whether your subfloor is wood or concrete, it must be leveled and clean. Use a shop vacuum to clean the debris and use a floor leveler or Portland crack filler to fill any holes pits or cracks. Check out my article Using Floor Levelers in Tile Work fro more details on the subject.
Next a good tile floor layout is needed once the floor levelers have dried. Tile layout typical involves finding the center of the longest run in the room. An equal distance is then measured to the opposing wall and a parallel line is then snapped to the adjacent wall. This line is your tile starting guideline.
Now assemble a row of tiles along the line, fitting them tightly together with no seam. Once you get to the end wall or stopping point, measure the space between the tile and the stopping point. Now take the measurement in half and cut two tiles the same length using a wet tile saw, fitting them at both ends of your tile row. You should now have a centered tile row.
Pick the tiles back up. Spread terrazzo tile adhesive with a 1/16 square notched trowel up against the line. Set the tiles into the adhesive the same way they were dry fit last time for a perfect fit.
Continue each row in the same fashion until your floor is complete. After a few hours of drying, roll a 150 pound tile roller over the entire floor. Wipe away any excess adhesive with a rag and adhesive remover. Wait 24 hours and seal the entire terrazzo floor with terrazzo floor sealer and a paint roller.