The core activity of Müller Polybau AG is the planning, execution and maintenance of building envelopes, particularly in the areas of: Roofing (roof renovation, new roof construction), Photovoltaics (solar systems on pitched roofs, facades and flat roofs), Facades (design and execution of facades), Sheet metal work (metal work for roofs and facades), Flat roofs and floor coverings, Lightning protection (protection of buildings from lightning strikes), Scaffolding (construction of scaffolding for renovation and new construction work), Building maintenance (maintenance and upkeep of buildings), and Building envelope cleaning (cleaning of facades and roofs). The company thus offers a comprehensive range of services for the building envelope and positions itself as a specialist for roof and wall.