Keim is the inventor and leading supplier of mineral silicate paints and stains for the restoration of historic masonry across the globe. Since 1878, Keim's mineral technology has been used to preserve some of the most iconic UNESCO World Heritage Sites as well as architectural treasures throughout the US. Today, Keim Mineral Coatings of America, Inc. employs more factory-trained technical and sales personnel to help you with your historic preservation needs. KEIM. COLORS FOREVER.