Water glass is a transparent liquid, as the name suggests. The chemical name is sodium silicate. There are no environmental objections to the mixture of water glass, hardener and water. This mixture is tested and approved by several independent laboratories on several factors. The use is permitted vulnerable natural environments and even in close surroundings of water catchments in Europe
The water glass-mixture that is injected under the construction pits creates a sealing layer that remains up to a year. This layer remains water-repellent long enough for a new building to be constructed. After a year the water glass slowly dissolves into the ground that is similar by nature.