Abstract: For renovating an open-pored plaster layer, a paint is made available that includes water, an inorganic binder on an alkali polysilicate base, a pigment composed of particles and a stabilizer. The stabilizer is composed of small particles on a silicate base, having an average diameter below 3 ?m, wherein these particles are colloidal distributed in water because of their charge distribution. As a result, the stabilizer prevents an insoluble sedimenting of the pigment particles. Following the application of this paint, the desired and in particular the original color shade is again uniformly present across the complete surface, and the cohesive pores extending through the plaster layer are essentially still open. The sound-absorbing effect of the porous plaster layer is therefore not substantially impaired as a result of the renovation.

Abstract: A room enclosure assembly on a base of a concrete ceiling or wall is disclosed. In an embodiment, it includes metal sheet material having contact surfaces toward the base and web faces leading away from the base and heat exchange surfaces. Folding regions are formed between the sub-faces of the sheet material. The contact surfaces are fastened to the base area via a heat conducting connection layer. The heat-exchange faces are provided with a coating layer. The heat flow between the base and the heat exchange surfaces is especially efficient because it takes place in the continuous metal sheet material. Through-openings in the heat exchange surfaces, together with the use of a suitable coating layer on the heat exchange surfaces, allow for the acoustic insulating effect and optical appearance to be optimized.

Abstract: For renovating an open-pored plaster layer, a paint is made available that includes water, an inorganic binder on an alkali polysilicate base, a pigment composed of particles and a stabilizer. The stabilizer is composed of small particles on a silicate base, having an average diameter below 3 ?m, wherein these particles are colloidal distributed in water because of their charge distribution. As a result, the stabilizer prevents an insoluble sedimenting of the pigment particles. Following the application of this paint, the desired and in particular the original color shade is again uniformly present across the complete surface, and the cohesive pores extending through the plaster layer are essentially still open. The sound-absorbing effect of the porous plaster layer is therefore not substantially impaired as a result of the renovation.

Abstract: A room enclosure assembly on a base of a concrete ceiling or wall is disclosed. In an embodiment, it includes metal sheet material having contact surfaces toward the base and web faces leading away from the base and heat exchange surfaces. Folding regions are formed between the sub-faces of the sheet material. The contact surfaces are fastened to the base area via a heat conducting connection layer. The heat-exchange faces are provided with a coating layer. The heat flow between the base and the heat exchange surfaces is especially efficient because it takes place in the continuous metal sheet material. Through-openings in the heat exchange surfaces, together with the use of a suitable coating layer on the heat exchange surfaces, allow for the acoustic insulating effect and optical appearance to be optimized.