Residential Home Wyssestein, Solothurn


multi-family house




Conversion / Restoration


4500 Solothurn


The Fixit renovation technique, including the use of a 30mm thick plaster layer of Fixit 222 Insulating Plaster, created a novel room climate based on its water-vapour permeability. The combined layers of the plaster system absorb excess humidity from the air and return it in a controlled way to the room, preventing the development of mildew

Used products

Fixit 222

Aerogel High Performance Insulating Plaster

Fixit 223

Special Embedding Mortar

Fixit 211

Roughcast mortar with adhesive agent

Fixit 493

Mineral-based undercoat stabilizer

Involved companies


Hochbauamt Projektrealisierung, 4509 Solothurn


Viktor Wyss AG, Scharlenweg 5, 4534 Flumenthal


Solodaris Stiftung, 4500 Solothurn

Further references

Apartment building in Le Kremlin-Bicêtre/France

Rubble masonry building

Clichy Building, F-Paris

Building with concrete block support, rendered with lime-based plaster

Hausmanian Building, F-Paris

Hausmanian building, renovation of the inner courtyard, thickness of the Fixit 222 insulating plaster 8 cm.

Vicq d'âzir Building, F-Paris

Building with stone/block support Street facade application of insulating plaster Fixit 222 in 50 mm thickness.

Copropriété 127-129 Rue de Charenton, F-Paris

Faubourian building

Dubach House, Hägglingen

The protected building, dating from the early 19th century, was once used as a bakery. The building was converted to a multiple-family dwelling with painstaking attention given to maintaining the historical substance. Fixit 288 Calce Clima Thermo was applied to the façade to meet the requirements of the preservation authority for a thermal protective plaster coat.

Façade renovation, Steinebrunn

The façade was renovated with a 50mm thick layer of Fixit 222 Aerogel High Performance Insulating Plaster.

First floor appartment in the Old Town of Zug

Increasing the thermal insulation value of the outdoor walls (due to the excessive heat loss). All exterior walls were therefore coated on their inner sides with thermally insulating plaster.

Residential buildings Hochstrasse Zurich

The ABZ cooperative apartment buildings on Hochstrasse in Zurich Fluntern, built by Otto Streicher in 1926, were last extensively renovated in the mid-1970s. The aim was to preserve the external appearance and the internal spatial structure in their essence. Therefore, it was decided to apply an aerogel high-performance insulation plaster Fixit 222 to the façades, while retaining the existing jambs. Foto: Markus Frietsch