The most popular stone floors today are marble and granite. Marble is a beautiful, but expensive floor covering. Polished and honed marble should be topped with a sealer that's designed for marble. Travertine marble should not be sealed but cleaned often with neutral cleaners. Heavy detergents or abrasives should never be used on these floors.
Marble is a form of limestone, or an alkali.
It's a mistake to put marble in restrooms, locker areas, and food areas, because the alkali will be damaged by acids in cleaning compounds, foods, and other organic materials. The Bottom Line When selecting flooring for your church, you must, of course, factor in color, function, installation, and cost. But don't forget also to consider long-term maintenance costs, which can be substantial and outweigh any money that may be saved in the initial purchase. The floor that's easiest to maintain long-term is either quarry or ceramic tile. Next to marble, those are also the most expensive to install.