SWEELCO

What SWEELCO does

SWEELCO is a privately-held French industrial company headquartered in Montreuil-Juigné near Angers (registered office: 19 rue Thomas Edison, 49460 Montreuil-Juigné) that designs and manufactures custom light steel frame (LSF / ossature métallique légère) structural elements for off-site construction of residential, commercial, and industrial buildings. The company's core technology integrates 3D BIM digital modeling in an in-house design office with automated numerical profiling machines for steel fabrication, using ArcelorMittal's Magnelis® corrosion-resistant steel alloy. Output is delivered as a four-tiered prefabrication system ranging from Fagots (numbered, bundled profiles for self-assembly) through Structure seule (pre-assembled panels) and Structure contreventée (braced panels) to Structure intégrale (fully finished, insulated, clad panels). Application categories span individual houses, grouped housing, surélévations and extensions, modular units, industrial buildings with spans up to 20 meters, energy retrofit panels, box-in-box configurations, technical partitions, and photovoltaic mounting structures.

The company operates a project-based, one-time-sale revenue model with no recurring subscription component; pricing is quote-based on surface area, finish level, and complexity, sourced through website quote forms, phone sales (02 41 37 83 17), and direct field sales targeting architects, construction economists, developers, project managers, and general contractors. Distribution is primarily direct-to-B2B in France, with select international projects (notably a 1,500 m² project in Switzerland), and is reinforced by strategic partnerships with ArcelorMittal (Magnelis® supply and co-marketing), Comat Groupe, and the social housing channel. In May 2026, SWEELCO acquired beSteel — a European LSF pioneer — integrating it as the wholly-owned subsidiary 'beSteel by Sweelco' to expand manufacturing capacity and market reach. Certifications (DTU 32.3, Eurocodes, NF EN 1090-4, RE2020 compliance) and labels (French PropTech, La French Fab, Campus Hors Site, Bpi France, Start Industrie) underpin institutional and regulatory market access.

Name

SWEELCO

Legal name

SWEELCO

Website

https://sweelco.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

11–50 employees

Short description

SWEELCO is a French industrial manufacturer that designs and fabricates custom light steel frame structural elements (walls, floors, roofs) for off-site construction, serving architects, developers, contractors, and social housing providers primarily in France.

Ownership category

akta.pro rank

Headquarters

HQ city

Juigné

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Light Steel Structure Sales: SWEELCO generates revenue through the sale of custom-designed light steel frame structures. The company offers four levels of prefabrication: Fagots (numbered, bundled profiles), Structure seule (pre-assembled panels), Structure contreventée (pre-assembled with bracing), and Structure intégrale (fully finished panels with insulation and finishes). Revenue is earned through one-time project fees based on surface area and complexity, with no recurring subscription component.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels12 records

Core offering

SWEELCO is a French industrial company that designs, manufactures, and delivers custom light steel frame (LSF) structural systems for off-site construction of buildings. The company produces walls, floors, and roof panels using 3D BIM digital modeling and automated numerical profiling, offering four levels of prefabrication (Fagots, Structure seule, Structure contreventée, Structure intégrale) primarily for residential, commercial, and industrial buildings.

Product overview

SWEELCO is a French industrial company specializing in off-site construction using light steel framing (LSF). The product portfolio comprises a tiered finishing system: Fagots (unassembled numbered profiles), Structure seule (pre-assembled panels), Structure contreventée (braced structural panels), and Structure intégrale (fully finished wall panels with insulation and cladding). Structural elements include walls, roofs, and floors. Application categories span residential buildings, extensions, vertical expansions, modular solutions, industrial buildings, energy-efficient renovations, technical partitions, roofing, box-in-box configurations, and photovoltaic structures. The company uses ArcelorMittal's Magnelis® corrosion-resistant steel as the primary material.

Differentiator

Problem solved

Functional benefit

Products and services

• Fagots (Profilés numérotés) Numbered, packaged steel profiles delivered as loose components for on-site assembly. Targeted at self-builders and projects requiring maximum flexibility.
• Structure seule (Pre-assembled panels) Pre-assembled 2D steel framing panels manufactured in workshop and delivered ready for installation. Provides faster assembly than loose profiles.
• Structure contreventée (Braced panels) Pre-assembled 2D steel framing panels with integrated structural sheathing for lateral bracing, providing rigidity and faster installation for demanding structural applications.
• Structure intégrale (Fully finished panels) Fully finished wall panels pre-assembled in workshop including structural frame, insulation, weather barrier, and exterior cladding. Delivered ready for rapid on-site installation.
• Ossature métallique légère (LSF) structural system Complete light steel framing structural system for walls, roofing, and flooring applications, designed for off-site prefabrication and rapid assembly. Uses ArcelorMittal Magnelis® corrosion-resistant steel.
• Modular Solutions (Solutions modulaires) 100% factory-assembled modular units delivered ready to install for rapid construction projects using the LSF system.
• Energy Retrofit Solutions (Rénovations énergétiques) Industrialized exterior insulation panel solutions for mass retrofit projects, including prefabricated panels with insulation and finish for energy-efficient renovations.
• Box-in-Box (Boîte dans la boîte) Self-supporting box-in-box structural solution for creating independent spaces within existing industrial buildings without structural modifications.
• Industrial Buildings (Bâtiments industriels) Industrial buildings and warehouses using light steel framing with spans up to 20 meters, leveraging LSF construction technology.
• Residential Buildings (Bâtiments résidentiels) Residential buildings including houses and apartment buildings using light steel framing.

Quantifiable outcome

• 60% lighter than wood with equivalent structural strength
• +5 more outcomes

Named customers3 records

Segments6 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• beSteelcoreStrategic or Co-development Partner · 1 May 2026In May 2026, SWEELCO officially acquired the assets of beSteel, a European pioneer in light steel framing. beSteel is now beSteel by Sweelco, integrating manufacturing capacity and expanding SWEELCO's capabilities and market reach.
• Start IndustrieminorStrategic or Co-development Partner · 1 September 2024SWEELCO joined Start Industrie in September 2024 to support innovation and reindustrialization in France, focusing on digital design, off-site prefabrication, and advanced materials.
• ArcelorMittalcoreStrategic or Co-development PartnerSWEELCO has a strategic partnership with ArcelorMittal for the supply of Magnelis® steel, a high-performance steel alloy with superior corrosion resistance. The partnership includes joint marketing initiatives, participation in ArcelorMittal events (inauguration of new Magnelis production line in Belgium), and CEO-level engagement. Mathieu Jehl, CEO of ArcelorMittal France, visited SWEELCO facilities, demonstrating a close working relationship. SWEELCO is cited in Le Moniteur regarding their use of Magnelis® technology.
• Comat GroupecoreStrategic or Co-development PartnerComat Groupe is featured as a key partner of SWEELCO. SWEELCO completed a 350 m² office expansion project for COMAT in Angers, demonstrating a close working relationship and successful project collaboration.
• TH ConceptminorImplementation/ SI/ Consulting PartnerTH Concept, a independent master builder based between Nancy and Pont-à-Mousson, collaborated with SWEELCO on a 130 m² office project in Atton. This was TH Concept's first project using light steel framing, demonstrating SWEELCO's support for partner education and adoption.
• Social Housing ProviderscoreChannel Partner/ Reseller/ DistributorSWEELCO works with social housing providers and landlords for the construction of grouped housing projects. The 12-house project in Allonnes (72) was completed for a social housing provider, demonstrating expertise in social housing construction.
• Campus Hors SiteminorStrategic or Co-development PartnerSWEELCO participates in Campus Hors Site workshops and events focused on off-site construction supply chain innovation and best practices.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Howick: New Zealand-based manufacturer of light steel frame roll-forming machines and technology serving prefab construction globally. Comparable to SWEELCO as an enabler and competitor in the LSF ecosystem.
• Cougnaud: French specialist in modular and prefabricated industrial and commercial construction. Closely comparable to SWEELCO as a domestic French competitor serving similar B2B industrial customers.
• Kingspan Group: Ireland-based global leader in insulated panels, structural steel framing systems, and building envelope solutions. Directly comparable to SWEELCO in prefabricated steel structures and insulated panel systems for industrial and commercial construction.
• Algeco: European leader in modular space rental and prefabricated building solutions. Directly competes with SWEELCO's modular construction offering for industrial, commercial, and temporary building applications.
• FrameCAD: New Zealand-based global provider of light steel framing technology, roll-forming machinery, and design software. Direct competitor to SWEELCO in the LSF construction technology market worldwide.

Broad incumbents

• Tata Steel: Major global steel producer with construction products and prefabricated steel building solutions through its construction products division. Competes with SWEELCO in steel structural components for industrial buildings.
• Knauf: German global construction materials manufacturer with steel framing, drywall, and insulation systems that overlap SWEELCO's structural wall offerings in residential and commercial markets.
• ArcelorMittal Construction: Construction solutions arm of SWEELCO's key steel supplier, offering prefabricated steel buildings, roofing, and cladding systems. Vertical integration risk and adjacent competitor in steel construction.
• voestalpine: Austrian steel and construction technology group producing structural steel components, sections, and pre-engineered systems for industrial and commercial buildings across Europe.

Regional players

• Wernick Group: UK-based modular and portable building manufacturer with similar prefab construction products to SWEELCO, but operating in the UK market rather than France/Switzerland.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@sweelco6604
• Facebookfacebook.com/sweelco
• LinkedInlinkedin.com/company/sweelco
• Instagraminstagram.com/sweelco

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

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 SWEELCO