Refurbishment – Tuchschmid

*Building with the material of the modern architecture is our passion.

*Heinz Huber / Head of Assembly

Refurbishment ML and FHZ ETH Zurich

Category: Windows and facades, News, Refurbishment
Year of construction: 2018 - 2019
Location: Zürich
Owner: ETH Zürich Immobilien Zürich
Architect: Itten + Brechbühl AG Zürich

With the refurbishment of the former machine laboratory (ML) and district heating power station (FHK), the ETH would like to use the buildings to their best advantage. As these buildings are national monuments, special attention must be paid to their maintenance and preservation. Therefore, only minor adjustments are permitted for both external façades.
The metal construction company Tuchschmid is installing a new façade, with high insulating capability, on the inside of the FHK-building. In addition, the FHK building will receive a superstructure with a post-and-beam construction and various skylights. The ML will be equipped with a new technical structure, the enclosure of which consists of thermally
insulated panels and a façade cladding.

More information about the project: Itten+Brechbühl AG, Zurich

Renovation School Complex Auen, Frauenfeld

Category: Windows and facades, Refurbishment
Year of construction: 2017 - 2020
Location: Frauenfeld
Owner: Sekundarschulgemeinde Frauenfeld
Architect: jessenvollenweider ARCHITEKTUR Basel
Site managem.: Roland Grandits Frauenfeld

After almost 48 years of uninterrupted use, the Auen School Complex is being made fit
for the future. The refurbishment and expansion works take place under compliance of Cul-
tural Heritage Protection requirements with the aim of preserving the original appearance.
In addition to replacing the insulated glazing to the current safety and energy-efficiency standards are also the renovation of the aluminum door systems, the extension of the
façade of the triple gymnasium and refurbishment of the parapet flashings and solar
shading devices. The refurbishment and extension buildings comprise a total glass area
of 2,700 m2.

Restoration Hotel Atlantis by Giardino, Zurich

Category: Windows and facades, Refurbishment
Year of construction: 2014 - 2015
Location: Zürich
Owner: Neue Hotel Atlantis AG Zürich
Client: Priora AG Generalunternehmung Zürich
Architect: Monoplan AG Zürich
Engineer: Henauer Gugler AG Zürich

The Hotel Atlantis by Giardino at the foot of the Uetliberg in Zurich was completely refurbished and has positioned itself since 2015 into the upper 5-star range. Designed in the late 1960s
by Hubacher and Issler Architects, it is now a listed archetype of postwar modernism. Tuch-schmid played a major role in the success of this renovation with the execution of the glass dome (ø 4,7 m) over the historic spiral staircase, the balcony balustrade glazing, the safety glass in the pond as well as the façades of the two-storey base of the building and the wellness centre with a total area of 750 m2.

Restoration Les Ambassadeurs, Bahnhofstrasse 64, Zurich

Category: Windows and facades, Refurbishment
Year of construction: 2013 - 2014
Location: Zürich
Owner: AXA Leben AG Zürich
Architect: Meier + Steinacher Partner AG Zürich

A prominent address on the Bahnhofstrasse in Zurich, the “Les Ambassadeurs” underwent a renovation to its facade to improve the energy efficiency. The aim was to leave historically listed steel signage on the Bahnhofstrasse elevation undisturbed and to replace the underlying facade and the courtyard façade with supporting, highly insulated panels along with floor to ceiling coupled windows. The courtyard façade also included an aluminium cladding. A particularly big challenge was the planning and execution of the weather seal in and around the listed signage especially because it was not accessible from the outside. Tight spaces, limited road access as well as a tight timeline placed high demands on the construction schedule and the logistics.

School building Büöl, Brunnen

Category: Windows and facades, Refurbishment
Year of construction: 2013
Location: Brunnen
Owner: Gemeinde Ingenbohl
Architect: Jeker Architekten SIA Basel

The restoration work to the façade of the school building Büöl in Brunnen was carried out from spring to late summer in 2013. During the weeks of summer vacation the no longer functional wood-metal windows were replaced and the glazed fronts replaced with high performance glass. For the new exterior façade, the substructure was strengthened, the entire building re-isolated and then 900 m2 laminated safety glass fitted to the façade. School is operating once again in a newly renovated, energy efficient schoolhouse.


ZHAW Library (City Hall), Winterthur

Category: Windows and facades, Refurbishment
Year of construction: 2013 - 2014
Location: Winterthur
Owner: Implenia Schweiz AG Aarau
Architect: P & B Partner Architekten AG Winterthur

The historically listed building of the former event hall in the heart of Winterthur has been transformed into the new library of Zurich University. To meet the high demands required for this historical monument, the exterior window elements were dismantled, repaired and converted to top hung casement windows, then glazed and refitted again. To the interior,
new sound insulating triple glazed elements with a peripheral steel frame were installed to meet the required insulation values. A total of 647 casement vents and 5426 glass units (Tikana and Diffuse Glass) were mounted on the outer façade and 647 fixed elements
with triple glazing to the inner façade.

Restoration Domed Greenhouses Botanical Garden University Zürich

Category: Windows and facades, Refurbishment
Year of construction: 2011 - 2012
Location: Zürich
Owner: Universität Zürich c/o Hochbauamt Kanton Zürich
Architect: ARGE Botanik Hubacher + Peier Architekten / Haerle Hubacher Architektur Zürich
Engineer: Walt + Galmarini Zürich

The three domed greenhouses, with acrylic glazing and filigree aluminium framed support structure, were built in the late 70s at the Botanical Garden of the University of Zurich. The structures have been updated with structural and energy-related restorations. After removing the acrylic glass, the aluminium structure was restored where necessary, cleaned and then reinforced with cables. As replacement for the 2,500 m2 acrylic surface, a special designed glass system with ventilated double glazed acrylic elements were used. The three domed display houses have different heights from 9.5 m to 17.0 m and a diameter of between 21.6 m to 26.8 m.


Façade Refurbishment Alleestrasse 44, Romanshorn

Category: Windows and facades, Refurbishment
Year of construction: 2012 - 2013
Location: Romanshorn
Client: EcoRenova AG Zürich
Architect: Viridén + Partner AG Zürich

The facade renovation of the four-story residential and commercial building included
demolishing the existing facade down to the masonry and replacing it with 458 m2
of high insulating facade complete with photovoltaic panels. The renovation work
also included the installation of special aluminium frames surrounding the wood-metal windows as well as twelve steel balconies. As a “Plus Energie House” the project has been publicized several times and is an excellent role model for sustainable building design in renovation projects.

Refurbishment Administration Building Promenade, Frauenfeld

Category: Refurbishment
Year of construction: 2008 - 2009
Location: Frauenfeld
Owner: Thurgauer Gebäudeversicherung Frauenfeld
Architect: Staufer + Hasler Architekten AG Frauenfeld
Site managem.: Hochbauamt des Kantons Thurgau

The administration building of the Thurgau cantonal administration shines in new splendor. Originally built by Tuchschmid in 1967 the facade required an upgrade to meet today’s energy efficiency standards. The new triple glazing meets these thermal insulation requirements. With a system specially developed for this project the facade was renovated without any major interventions to the facade structure. The restored area encompasses 2,200 m2.

Renovation of administration building, Griesser AG, Aadorf

Category: Refurbishment
Year of construction: 2007
Location: Aadorf
Owner: Griesser AG Aadorf
Architect: Olbrecht Krebs und Hofer AG FH SIA SGD

In only a short time, the main administration building of Griesser AG in Aadorf has been restored to its former glory. The rain screen steel and glass facade gives the building a light modern appearance. Great emphasis was placed on energy efficiency and sustainability. By means of openings vents in the facade, optimal functionality and a fresh air supply can be guaranteed. The contract included the removal of the existing and the installation of 1,200 m2 of new steel and glass facade.

Business Tower Utoquai 55, Zurich

Category: Refurbishment
Year of construction: 2006 - 2007
Location: Zürich
Owner: Eigentümergemeinschaft Utoquai 55 Zürich
Architect: Pro Optima AG Elgg (Planer), Zanoni Architekten Zürich

The facade and window refurbishment at the business tower Utoquai in Zurich was completed despite difficult working conditions caused by the presence of asbestos,. Not only the leaky windows, but the weather seals and cladding were renovated. In addition, the ground floor was outfitted with new glazing. Thus the 900 m2 building envelope meets today’s energy efficiency requirements.