Why can stone and terrazzo be difficult to add during remodeling?

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floor covering Axminster carpet, late 18th or early 19th century.

Adding stone or terrazzo during a remodeling project can be challenging primarily due to their weight and installation requirements.

Unlike thinner flooring materials, these surfaces are heavy and often require a reinforced subfloor to support the load. Furthermore, because terrazzo is poured as a mixture of marble chips and epoxy or cement, it must be ground and polished on-site to achieve a smooth finish. This process is labor-intensive, creates significant dust, and requires specialized equipment, making it less convenient for residential renovations compared to pre-finished flooring options.1