100 year paint?

BuildingGreen.com: "Mineral silicate paints are not new, but they will be new to many in North America, including most of those in the green building industry. Keim Mineral Systems invented mineral silicate paints in Bavaria (Germany) in 1878, and Keim paints are used around the world today. The binder is potassium silicate dissolved in water (sometimes referred to as 'waterglass'). This is combined with inorganic fillers and natural earth oxides to produce an inorganic 'liquid stone' finish through a process of petrification. Unlike conventional coatings, mineral silicate paints do not form surface films that can flake off; they soak into and permanently bond with the substrate, providing tremendous life expectancy. Durability in excess of 100 years has been reported, according to Keim. Liquid Mineral Systems"