For pitched-roofs, Bauder has a new insulation material called BauderEco S in its range. It consists of biomass, recycled reusable material and shell limestone. For flat roofs it offers the waterproofing membranes Karat Air+, which are coated with titanium oxide. When exposed to sunlight, the coating reacts with nitrogen oxide particles in the air. The pollutants are converted into carbon dioxide, water and salt, which drain off after rainfall.