Langlois Sobreti

Name

Langlois Sobreti

Legal name

Langlois Sobreti

Website

https://langlois-sobreti.fr

Company type

Private

Founded year

1947

Operating status

Operating

Headcount range

101–250 employees

Ownership category

akta.pro rank

Product category

Interior fitting services

NAICS

Office Furniture (including Fixtures) Manufacturing (33721), Office Furniture (including Fixtures) Manufacturing (3372), Custom Architectural Woodwork and Millwork Manufacturing (337212)

SIC

Partitions, Shelvg, Lockers, & Office & Store Fixtures (2540), Metal Doors, Sash, Frames, Moldings & Trim (3442), Office Furniture (2520), Glass Products, Made Of Purchased Glass (3231)

akta.pro primary industry

Interior Glazing & Glass Partitions (IMAFANAK)

akta.pro secondary industries

Industrial & Cleanroom Fit-Out (Factories, Warehouses, Controlled Environments) (IMAFANAF), Subfloor Systems & Underlayment (Backer board, Moisture barriers, Acoustic mats) (IMADAJAK)

Keywords

• Removable partition walls
• Suspended ceiling systems
• Acoustic treatment solutions
• Modular interior fitting
• Industrial space division

Headquarters

HQ city

Rennes

HQ country

France

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Interior Fitting - Design, Manufacturing & Installation: Langlois Sobreti generates revenue through the full lifecycle of interior fitting projects: consulting, custom design, manufacturing of partition and ceiling components, and professional installation. Projects range from small-scale office fit-outs to large-scale commercial and industrial installations covering thousands of square meters. Pricing is bespoke and quote-based, reflecting the customized nature of each project.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Langlois Sobreti designs, manufactures, and installs custom interior fitting systems, including removable modular aluminum partition walls, suspended ceilings in metal/wood/mineral fiber/radiant configurations, and acoustic treatment solutions (panels, islands, acoustic boxes, sound traps, and baffles). The company serves industrial, commercial, tertiary, and public-sector clients through eight regional agencies in Western France and Paris, executing projects ranging from small office fit-outs to 135,000 m² commercial center renovations.

Product overview

Langlois Sobreti is a specialist in custom interior fitting-out, operating as a single unified service offering rather than a modular software platform. The portfolio consists of three core product families: (1) Cloisons Amovibles – modular aluminum partitions available in solid, glass, semi-glazed, half-height, and industrial variants; (2) Plafonds Suspendus – suspended ceiling systems in wood, metal, mineral fiber, and radiant heating/cooling configurations; and (3) Solutions Acoustiques – acoustic treatment products including acoustic boxes, islands, panels, and sound traps. These are complemented by interior layout services (aménagement) featuring technical floors and partition doors. All products are designed for industrial, commercial, public, and tertiary sector applications, with a strong focus on acoustic performance and space adaptability. The company operates from 8 agencies across Western France (Grand Ouest) and Paris, serving both local and national projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Cloisons Amovibles (Removable Partitions) Modular aluminum partition walls available in solid, glazed, semi-glazed, half-height, and industrial high-height variants. Designed to be reconfigured over time without structural work, supporting flexible space planning for offices, industrial facilities, and commercial spaces. Borders, doors, and integrated accessories (sliding glass, bi-flush, framed aluminum) are included as part of the partition system.
• Plafonds Suspendus (Suspended Ceilings) Suspended ceiling systems in metal (steel or aluminum blades, cassettes, self-supporting panels), wood, mineral fiber, and radiant heating/cooling configurations. Includes standard, decorative, and bespoke solutions such as acoustic baffles, honeycomb designs, and integrated lighting systems for commercial, industrial, and public interiors. Aesthetic and acoustic performance can be tailored to project requirements.
• Solutions Acoustiques (Acoustic Solutions) Comprehensive acoustic treatment portfolio including acoustic panels (wall-mounted or suspended), acoustic islands, acoustic boxes (self-supporting booths for meetings, phone calls, and focused work), sound traps, wall doublings, and vertical acoustic baffles. Provides both absorption and isolation solutions tailored to industrial, commercial, and tertiary environments, with performance validated by CSTB testing where applicable.
• Aménagement (Interior Layout) Space planning services and technical flooring solutions for optimizing workspace layouts, including raised access floors (plancher technique) for managing cables and technical infrastructure, and integrated door systems for removable partitions (bi-flush doors, sliding glass doors, framed aluminum doors).

Quantifiable outcome

• Over 10,000 interior fitting projects completed in 10 years
• +2 more outcomes

Named customers21 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Six partnerships are on record, tiered minor and core.

• Yves Hernot (Acoustic Consultant)minorStrategic or Co-development PartnerCollaboration with independent acoustic consultant Yves Hernot on complex acoustic projects such as the Ouest-France hexagonal baffled ceiling, where joint development of the acoustic design was required to achieve targeted absorption performance validated by CSTB testing.
• Centre Scientifique et Technique du Bâtiment (CSTB)minorStrategic or Co-development PartnerCSTB conducted acoustic performance testing for custom acoustic solutions, notably validating the absorption coefficient (α = 1) of the Ouest-France 'baffles verticales' ceiling prototype through three separate tests.
• VIPARIScoreStrategic or Co-development PartnerVIPARIS is the operator/owner of Paris Expo Porte de Versailles, which retained Langlois Sobreti for the installation of 1,200 m² of custom Lauder Linea wood suspended ceilings. VIPARIS manages major Parisian exhibition venues and represents a strategic client for marquee projects.
• VINCI (through Aldeta / Altarea Cogedim)coreImplementation/ SI/ Consulting PartnerVINCI was the master developer overseeing the Cap 3000 restructuring (135,000 m²). Langlois Sobreti was retained as the suspended ceiling subcontractor (lot PLAFONDS SUSPENDUS) within a large general contractor team that included Altarea Cogedim (developer), Groupe 6 (architect), Jouin Manku (interior design), and multiple engineering firms.
• Ville de ChâteaulinminorImplementation/ SI/ Consulting PartnerThe City of Châteaulin (acquiring the Coatigrac'h building in 1988) commissioned the conversion of the multipurpose venue into a 1,200-person cultural space. Langlois Sobreti delivered the full acoustic treatment including wood fiber panels, isothermal panels, and acoustic curtain dividers.
• ESAT Les Ateliers Pays d'AugeminorImplementation/ SI/ Consulting PartnerESAT (Établissement et Service d'Aide par le Travail) Les Ateliers Pays d'Auge is a social inclusion organization that provides sheltered employment. Langlois Sobreti delivered acoustic suspended ceiling works for their workshop facilities, indicating a client relationship with a social-sector organization.

Scale indicators5 records

Recent moves9 records

Expansion highlights5 records

Broad incumbents

• Saint-Gobain: Global building materials conglomerate whose subsidiaries (Placoplatre, Rockfon, Ecophon, Eurocoustic) directly overlap with Langlois Sobreti's plasterboard partitions, suspended ceilings, and acoustic solutions across commercial and industrial segments.
• Knauf: Major European manufacturer of plasterboard partitions, suspended ceiling systems, and insulation. Competes broadly with Langlois Sobreti on standardized partition and ceiling products across the same French and European customer base.

Direct peers

• Rockfon: Saint-Gobain subsidiary specializing in stone-wool acoustic ceiling panels and grids. Highly comparable to Langlois Sobreti's Plafonds Suspendus acoustiques line and acoustic baffle/island offerings for offices, education, and industry.
• Tiason: French specialist in custom office partitions and interior fit-out, including glazed and full-height movable walls. Closely comparable offering profile and target customer base to Langlois Sobreti in the French tertiary sector.
• Clestra Hausermann: French-origin modular partition specialist operating across Europe with demountable wall systems for offices. Direct comparable in movable partition walls serving enterprise and public-sector clients with custom interior fit-out.
• Ecophon: Saint-Gobain subsidiary focused on acoustic ceiling systems and wall absorbers for healthy indoor environments. Overlaps directly with Langlois Sobreti's acoustic panels, islands, and sound trap solutions for commercial and educational interiors.
• Placoplatre: Saint-Gobain's French plasterboard partition and ceiling subsidiary. Direct comparable in metal-stud drywall partitions, suspended ceilings, and acoustic linings for tertiary and industrial projects in France.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks4 records

Key highlights6 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

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 Langlois Sobreti