What SOTTAS SA does

SOTTAS SA is a family-owned Swiss metal construction company founded in 1982 and headquartered in Bulle, with five Swiss offices (Bulle HQ and Denges production in French-speaking Switzerland, plus Bellinzona, Lyss, and Nyon regional offices). The company employs more than 560 people across workshop, technical, assembly, engineering, and support functions, and operates 26,000 m2 of production and warehouse capacity dedicated to two core product lines: steel structural construction (Charpente) for buildings, bridges, and infrastructure, and high-tech glass facade systems including unitised curtain walls and stick systems. Revenue is generated entirely through bespoke B2B project contracts with general contractors, property developers, architects, and public entities across Switzerland, with each project individually quoted based on steel tonnage, facade area, complexity, and certification requirements (EN 1090 EXC4, Minergie, LEED, BREEAM).

The technical platform rests on proprietary in-house products (Sottas 50 aluminum and Sottas 56 steel stick systems, Sottas Confort, Sottas Ouvrant ventilation flaps), an in-house Test Centre capable of structural validation up to 5000 Pa, and a structural silicone glazing glue robot described as unique in Switzerland. An integrated "All in One" delivery model combines steel structure and facade under a single project manager, addressing coordination friction on building envelope projects. The company holds ISO 9001, 14001, 45001, and 3834-2 certifications, Minergie Fachpartner status, and EcoEntreprise, Eco Acier, and Carbon FRI labels, and is a founding member of the Ecole du Métal et du Dessin apprenticeship school. Disclosed annual revenue is CHF 150 million, served exclusively within Switzerland with named institutional customers including SBB-CFF-FFS, EPFL, Hôpital du Valais, CPEG, Audemars Piguet, AXA Leben, Coop Immobilien, and the Hôtel Ibis Geneva.

Name

SOTTAS SA

Legal name

SOTTAS SA

Website

https://sottas.ch

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

251–500 employees

Short description

SOTTAS SA is a family-owned Swiss metal construction and high-tech facade company employing 560+ people across five Swiss offices, delivering bespoke steel structures, glass facades, and integrated building envelope solutions to public and enterprise clients across Switzerland.

Ownership category

akta.pro rank

Product category

Steel Construction and Architectural Facades

NAICS

Fabricated Structural Metal Manufacturing (332312), Ornamental and Architectural Metal Work Manufacturing (332323), Glass and Glazing Contractors (23815), Sheet Metal Work Manufacturing (332322)

SIC

Fabricated Structural Metal Products (3440), Prefabricated Metal Buildings & Components (3448), Sheet Metal Work (3444)

akta.pro primary industry

Metal Roofing & Wall Panels (Architectural/Structural) (IMADACAG)

akta.pro secondary industries

Steel Plate, Sections & Welded Assemblies (IMADACAD), Sheet Metal & Flashing Works (Gutters, Copings, Edge Metal, Downspouts) (IMAFAMAE)

Keywords

• Steel construction services
• Glass facade systems
• Curtain wall manufacturing
• Metal building envelope
• Structural steel fabrication

Headquarters

HQ city

Bulle

HQ country

Switzerland

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Steel Structure Construction (Charpente): Design, fabrication and assembly of steel structures for buildings, bridges and infrastructure projects. Revenue generated through project-based contracts for commercial, public and industrial construction.
2. Glass Facades: High-tech facade systems including unitised curtain walls, stick systems, and custom aluminum/glass facades. Revenue from facade design, manufacturing and installation contracts.
3. All in One: Integrated approach combining steel structure and facade under single project management, offering one contact point for complete building envelope solutions.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

SOTTAS SA designs, fabricates, and assembles load-bearing steel structures (Charpente métallique) and high-tech glass and aluminum facades (Facades vitrées) for buildings, bridges, and infrastructure projects in Switzerland. The company also offers an "All in One" integrated service combining steel structure and facade construction under a single point of contact, supported by a proprietary Sottas Line product family of curtain wall systems.

Product overview

SOTTAS SA is a family-owned Swiss metal construction company with over 560 employees, operating as a leader in steel structure construction and High-Tech facades. The company offers three core product/service lines: (1) Charpente métallique for steel structural frameworks in buildings, bridges and infrastructure; (2) Facades vitrées for high-tech glass and aluminium facade systems; and (3) All in One, an integrated service combining steelwork and facades under a single contact point. Additionally, the Sottas Line proprietary product family includes aluminium stick systems (Sottas 50), steel curtain wall systems (Sottas 56), and specialized facade components such as ventilation flaps and comfort systems. The company also operates an in-house test center for facade performance testing and provides customer service including thermography diagnostics and energy certification support.

Differentiator

Problem solved

Functional benefit

Brands

• Sottas Line: A proprietary product line developed by SOTTAS SA's own team of developers to address growing customer needs. Includes ventilation flaps, comfort systems, wood/metal beams, and curtain wall systems such as Sottas 50 ALU and Sottas 56.

Products and services

• Charpente métallique (Steel Structure) Steel structural framework and construction services for buildings, bridges, and infrastructure projects, including design, fabrication, and assembly, certified to EN 1090 EXC4.
• Facades vitrées (Glass Facades) High-tech glass and aluminum facade systems including unitised curtain walls, stick systems, and custom architectural facades for commercial, administrative, and residential buildings.
• All in One Integrated service combining steel structure and facade construction under a single point of contact, offering complete project management from technical design through production and assembly.
• Sottas 50 Proprietary aluminium stick system curtain wall product line developed in-house by SOTTAS SA for facade applications.
• Sottas 56 Proprietary steel stick curtain wall system designed for facade applications with wood integration capabilities, part of the Sottas Line product family.
• Sottas Confort Compact Facade ventilation and comfort system product from the Sottas Line product family.
• Sottas Ventilation Flap (Sottas Lüftungsklappe) Custom ventilation flap component for facade systems, part of the proprietary Sottas Line.
• Customer Service (Kundendienst) Technical customer service including thermography for building diagnostics, GEAK building energy certificates, and ongoing facade support services.

Quantifiable outcome

• 26,000 m2 production and warehouse space
• +2 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Glass2energy (G2e)coreStrategic or Co-development Partner · 1 January 2011Sottas SA participated in the creation of Glass2energy company in 2011. G2e develops dye-sensitized solar cells (Grätzel cells) for building-integrated photovoltaics. This partnership positions Sottas at the forefront of solar facade technology integration.
• Ecole du Métal et du Dessin (Metal School)coreStrategic or Co-development PartnerFounding member of the Ecole du Métal et du Dessin in Bulle, created in collaboration with 3 other construction companies. The school provides first-year training for metal construction apprentices. Inauguration of the new dedicated building in autumn 2015.
• EN 1090 Certification BodiesminorOthersCertified to EN 1090-1, EN 1090-2, and EN 1090-3 for factory production control of structural steel and aluminum components up to EXC4 execution class, the highest certification level.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Seele: German-headquartered specialist in high-tech glass facades and steel-glass construction for landmark buildings. Most directly comparable to Sottas in terms of engineering-heavy unitised curtain wall work and project-based enterprise delivery across Europe.
• Forster Profilsysteme: Swiss steel and stainless profile manufacturer for windows, doors, and facades. Comparable to Sottas on Swiss-made facade profile systems and architectural metalwork, though smaller in scale and focused on profiles rather than full project delivery.
• Waagner-Biro: Austrian specialist in complex steel structures and high-end facades, particularly for cultural and public buildings. Closely comparable to Sottas on the structural steel side and on the integrated building-envelope delivery model.
• Mero-TSK: German specialist in steel construction and complex facade systems, including unitised and stick curtain walls. Comparable to Sottas in the dual steel-structure + facade business model and EXC-class certified execution.
• Josef Meyer Stahl und Metallbau: Swiss metal construction firm offering steel engineering, facades, and special structures. The closest direct Swiss peer to Sottas in terms of geography, dual steel + facade offering, and EXC-certified execution.
• Vitrocsa: Swiss specialist in minimal-frame sliding glass facade and window systems. Comparable to Sottas as a Swiss high-end facade specialist serving premium architectural projects domestically and internationally.

Broad incumbents

• Schüco: Large German incumbent in aluminum and steel facade, window, and door systems. Comparable to Sottas on the facade side (productized systems) but operates as a much broader portfolio manufacturer rather than a Swiss specialist fabricator.
• Lindner Group: German family-owned building envelope specialist offering facades, interior fit-out, and insulation. Comparable to Sottas in facade systems and integrated project delivery, but with a much broader product portfolio.
• Aluprof: Polish aluminum systems manufacturer serving facade, window, and door markets across Europe. Comparable to Sottas on aluminum facade system supply, though operating at much larger volume and as a system supplier rather than project contractor.
• Reynaers Aluminium: Belgian manufacturer of aluminum systems for windows, doors, and facades used across Europe. Comparable to Sottas on the aluminum curtain wall side as a system supplier, but not a direct project fabricator.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SOTTAS SA