Although it varies slightly according to manufacturer, materials used, and the installation technique and process, the typical thickness of a terrazzo floor topping is anywhere from ½ to ¾ inches thick. Thin-set terrazzo flooring is generally between ¼ and ⅜ inches thick while monolithic terrazzo, sand cushioned terrazzo, and bonded terrazzo flooring is ½ inches in thickness. Bear in mind that these are not the only measurements worth noting. Mortar beds are normally around 1 ½ inches thick and often rests on a ¼-inch layer of asphalt paper or cushion of sand.