Austrias Stattenberg Schist can be used for exterior applications in cold climates. Schist is a metamorphic rock known for its durability and weather resistance. It is a popular choice for building facades, retaining walls, and other outdoor applications. The specific suitability of Stattenberg Schist for cold climates will depend on factors such as its physical properties and the specific installation techniques used. It is advisable to consult with a local architect or construction professional to ensure proper installation and maintenance in cold climate conditions.