Foam glass is a very load-bearing, not absorbent, not freezing, non-flammable material resistant to external weather and above all a very light building material. It is a modern and ecological solution for insulating foundations, insulate ground, roof systems – green terraces, even surfaces or insulating installations or tanks in the soil. It acts under the foundation plate also as drainage and with its enclosed structure prevents penetration of moisture into the foundation plate. It can shape the land in unlimited ways. Foam glass not as other materials absorbs no water and retains its volume. Thus, a structure is not overloaded. The low volume mass provides zero deformation of the vault. It is ideal for filling and insulating the inter-ceiling spaces while reconstructing monumental buildings. It is ecological and can be recycled.