Architectural monument „Badstube zur Sonne“ | Bamberg

A jewel at the "Sonnenplätzchen"

With the renovation of the old "Badstube zur Sonne" in the old town of Bamberg, the set goals were ultimately met in full: the preservation of the listed building, its adaptation to the structural-physical requirements of our time and at the same time the preservation of its originality. In just one year, the half-timbered house, which had been badly damaged, was renovated with our maxit products - inside and out.

Listed property in the world heritage city of Bamberg

The former "Badstube zur Sonne" has existed since 1452 and was first mentioned in 1523/28 in the Bamberg bishop's urbar as liable to pay interest - as "Judenbadstube". The building is a listed object consisting of several components in different constructions. The rear building facing the Regnitz, probably the original bathhouse, consists of a ground floor made of sandstone, upper floors with exposed timberwork and a steep gable roof.

When renovating listed buildings, the authorities stipulate that the originals must be preserved or replaced or created true to the original. When converting these buildings in the 21st century, however, not only the requirements of the monument authorities must be met, but also the conditions relating to building physics, e.g. heat, fire and sound. Particularly in the case of exposed trusses, a prudent approach to possible interior insulation is necessary in order to preserve the exposed truss construction worthy of protection.

A well-considered product selection

In addition to the repair and visual upgrading of the building, it was also necessary to improve the thermal insulation. Here, different variants of the thermal insulation calculation were carried out in order to find the optimal structure of the exterior wall in this way and to make the appropriate product selection.

In the area of the visible framework, interior insulation was applied with the mineral insulating plaster maxit ip 76 therm in a maximum application thickness of 60 - 80 mm. With this application thickness, optimal insulation of the frame was achieved without damaging the wooden structure. In order to subsequently create an even surface on the interior plaster and the interior insulation, the surfaces were felted with a filler of maxit multi 262.

The frames in the exposed framework were restored with the renovation plaster maxit multi 262, i.e. the surface was drawn off flush with the wood of the framework and textured; a separating cut was made between the wood and the plaster.

Fa. Hans Winkler, Bamberg

Jürgen Rudroff, Bamberg

Time period:
2019 - 2020


  • maxit ip 76 therm
  • maxit multi 262
  • maxit ip 18 ML

Project location