The floor finish plays an important part in the successful operation of a factory. Basic requirements for an ideal floor finish are that it should be economical, resistant to wear, impervious, sanitary, fire resistant, skidproof, inert, easy to maintain and to clean. There are two types of concrete floors used in industrial plants: monolithic and granolithic. Monolithic slabs make good structural concrete but the surface does not stand up well under severe wear. By contrast is a granolithic floor. A special "absorption process" granolithic floor topping has a high denstity, although it consists of essentially the same materials as found in convential concrete floors. These floors get their exceedingly high wear resistance from the method used to lay them. By using the absorption process and withdrawing the excess water provides a topping of unusual density and durability.