Building construction is the most important construction sector for all companies, architects and engineers working in the building sector. Walls in building construction can have many functions, e.g. for load transfer and in sound and heat insulation. The demands placed on wall construction materials are correspondingly diverse. Against this background, the choice of wall construction material is decisive for the quality of a building, both aesthetically, economically and technically. The aspects under which planners and builders make this choice vary greatly and are often influenced by personal preferences/experience or regional traditions. The present Market Atlas for Wall Building Materials, with its numerous tables and maps on the market shares of wall building materials in building construction, very clearly shows these regional differences up to the level of districts and independent cities. The Market Atlas.