The core activity of Spenglerei H. Oberli AG is the execution of roofing and sheet metal work, as well as the installation of lightning protection systems for buildings. This includes in particular: The manufacture and installation of gutters, downspouts, dormer windows and metal roofs; The production of facade cladding and sealing; The installation of external and internal lightning protection, including surge protection devices and earthing systems. The company thus offers a combination of traditional roofing and sheet metal work and the installation of safety systems for buildings.