Like natural stone, concrete has fine capillaries which can be penetrated by moisture and dirt. CleanTop system is a component of the production process of concrete and therefore permanently bonded with the stone.

The system protects the stone thoroughly from moisture and dirt by making sure it can not penetrate, or only partially depending on the Clean Factor. Dirt accumulations can be removed easily with water and the surface need less cleaning.

Colour and surface are better protected then conventional impregnated or coated concrete blocks. Because CleanTop system does not lose its properties through weathering and mechanical load it has a long-term protection.