Johann Windisch

Part of Wienerberger AG, Wienerberger Ziegelindustrie GmbH is an Austrian company that specializes in natural building materials such as bricks and has an ambitious sustainability program that reduces CO2 emissions, increases biodiversity, and ensures the reusability of their products. The company is based in Hennersdorf, Austria. The company has recently launched an online tool for roofers to plan, calculate, and estimate complete roofs in just a few minutes, ensuring compliance with technical requirements and valid standards. Customers can contact the company for product inquiries, technical details, or general questions. The company's website provides easy steps to search for a Declaration of Performance (DoP) or use the search engine. Johann Windisch has been the CEO of the company since 1990.

Tondach Gleinstaetten AG manufactures and markets roofing tiles and bricks. The company's brands include Strangfalz, Landdach, Mulde, Ikarus and Sulm. Tondach Gleinstaetten was founded in 1881 and is headquartered in Gleinstatten, Austria.