What SEPA does

SEPA is a French manufacturer of concrete and natural stone products for the construction industry. Founded in 1976 and headquartered in Sélestat, Alsace, the company operates five factories across the Alsace region (Schweighouse, Sélestat, Sainte Croix en Plaine, and Rixheim) with an annual production capacity of approximately 250,000 tonnes of concrete products. SEPA's portfolio spans building products — hollow, solid, pillar, lintel, floor, drainage, formwork, and edge blocks — alongside proprietary systems including Technibloc® (thin-joint rectified blocks), Isolabloc® (wood-cement insulating formwork blocks with PSE options in various thicknesses and thermal conductivities), and Square/Square XL/Unik/Arena concrete pavers. The product set is NF and CE certified, with an expanded natural stone line under the CUBIK® sub-brand for outdoor landscaping.

The company serves BTP (Building and Public Works) contractors, individual builders and homeowners, and public works/municipalities across Alsace and Lorraine. SEPA is structured as a Société Anonyme (SA) with €4,000,000 share capital and operates as part of the broader Groupe Léonhart, alongside sister entities such as Sablières Léonhart (700,000+ tonnes/year of aggregates) and Spurgin. Go-to-market is primarily via an authorized dealer/reseller network of approximately ten sites in the region, supplemented by the Selfbéton automatic concrete dispensers that enable 24/7 self-service card-payment sales of small-quantity ready-mix concrete directly from production sites. Industrial partnerships with CERIB and CSTB anchor its certification, R&D, and standards-compliance activity, while aggregates and natural stone contribute additional revenue streams.

Name

SEPA

Legal name

SEPA

Website

https://sepa-alsace.com

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

11–50 employees

Short description

SEPA is a French manufacturer of certified concrete and natural stone products serving construction, public works, and landscaping customers across Alsace and Lorraine, operating five factories producing 250,000 tonnes annually under proprietary brands such as Technibloc®, Isolabloc®, and CUBIK®.

Ownership category

akta.pro rank

Headquarters

HQ city

Sélestat

HQ country

France

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Concrete and building material product sales: Revenue generated from manufacturing and selling concrete products including blocks, pavers, curbs, formwork elements, and accessories. Sales through dealer network and self-service dispensers.
2. Aggregates and granulats: Sale of sands and aggregates in big bags and bulk, used in construction, civil engineering, asphalt, mortars, and concrete production.
3. Natural stone products: Sale of CUBIK® branded natural stone products for outdoor landscaping.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

SEPA manufactures and sells concrete and natural stone products for the construction industry, including hollow blocks, solid blocks, formwork blocks, pillar blocks, lintel blocks, floor blocks, drainage blocks, edge blocks, pavers, curbs, gutters, and aggregates. The company operates five factories in Alsace and Lorraine producing 250,000 tonnes annually, distributed through a regional dealer network and Selfbéton self-service concrete dispensers.

Product overview

SEPA is a manufacturer of concrete and natural stone products for the construction industry (BTP/Bâtiment et Travaux Publics). Founded in 1976, the company operates five factories producing approximately 250,000 tons of concrete products annually. The product portfolio spans two main categories: building products (including Technibloc® thin-joint systems, Isolabloc® wood-cement insulating blocks, hollow blocks, solid blocks, formwork blocks, pillar blocks, lintel blocks, floor blocks, drainage blocks, and edge blocks) and outdoor/landscaping products (including Pavés Square and Square XL pavers, curbs, gutters, garden borders, walls, and coping stones). SEPA also operates Selfbéton automatic concrete dispensers and offers aggregates in big bags. The CUBIK® sub-brand provides natural stone products. Products are NF and CE certified, with facilities in Schweighouse, Sélestat, Sainte Croix en Plaine, and Rixheim.

Differentiator

Problem solved

Functional benefit

Brands

• Technibloc®: Thin-joint rectified concrete block system with modular components for sustainable construction
• Isolabloc®
• CUBIK®
• Selfbéton
• Square
• Square XL
• Unik
• Arena

Products and services

• Technibloc® Thin-joint rectified concrete block system with modular design for sustainable and HQE (High Quality Environmental) construction, offering optimal water and energy management on construction sites. Targets BTP contractors and construction companies.
• Isolabloc® Insulating wood-cement formwork block system with exterior thermal insulation for load-bearing walls in individual homes, collective housing, and industrial buildings. Includes PSE insulation options in various thicknesses (14, 18, 20 cm) and thermal conductivities (TH36, TH31 graphited, Biomass balance).
• Blocs creux (Hollow blocks) Certified NF and CE hollow concrete blocks for foundations and construction, providing quality results with high resistance standards. Designed for standard building construction applications.
• Blocs piliers (Pillar blocks) Vertical chaining concrete blocks that contribute to building stability, designed to support beams, lintels, and floors when reinforced with metal armatures. Used in structural construction applications.
• Blocs linteaux (Lintel blocks) Horizontal chaining concrete blocks that form the skeleton of construction, enabling concrete pouring and reinforcement placement without formwork. Used at lintel positions in building structures.
• Hourdis (Hollow floor blocks) Hollow concrete blocks designed for beam-and-hollow floor systems on raised floors or upper floors, easily inserting between concrete beams for simplified on-site installation.
• Blocs drainants (Drainage blocks) Alveolar concrete drainage blocks made from Rhine sand and aggregates mixed with CEM II cement, featuring special solidity and allowing water evacuation by gravity. Used in drainage infrastructure.
• Blocs coffrants (Formwork blocks) Concrete formwork blocks for buried walls, foundations, and retaining structures, providing solutions for various structural constraints. Used in underground and structural construction.
• Blocs pleins (Solid blocks) Solid and perforated concrete blocks with superior crushing resistance compared to standard blocks, designed for buried foundations and separating walls.
• Bordures de voirie (Road curbs) Monobloc concrete curbs and gutters designed to withstand heavy road traffic, wheel shocks, pollution, and weather, certified NF and CE. Used in road infrastructure and urban development projects.
• Pavés Square (Square pavers) Nuanced concrete pavers imitating the irregular lines of hand-cut stones, with a patina treatment making each paver unique. Available in Atlas, Colorado, Dolomites, and Himalaya colors. Designed for driveways, paths, courtyards, and terraces.
• Pavés Square XL (Square XL pavers) Larger format concrete pavers with three inseparable formats (16x18 cm, 18x21 cm, 18x26 cm), imitating hand-cut stones with patina treatment. Available in Atlas, Colorado, Dolomites, Himalaya, Anthracite, and Gris colors.
• Selfbéton Automatic concrete dispenser offering ready-mix concrete in self-service mode ('béton-drive'). Produces concrete on-demand within 5 minutes upon payment at the terminal, delivered into customer's trailer or skip. Serves individuals and small contractors needing small quantities 24/7.
• Big Bag / Sables et granulats (Aggregates) Packaged sand and aggregates in four big bag sizes, designed to meet requirements of public works and building industries for terracing, road surfaces, bituminous mixes, mortars, renders, and ready-mix concrete.
• Aménagement extérieur (Outdoor landscaping products) Outdoor landscaping products including rounded or flat-top border stones, walls and low walls, coping stones, floral blocks, and Vauban blocks for organizing and decorating outdoor spaces.
• CUBIK® Natural stone products brand complementing SEPA's concrete catalog, for outdoor mineral applications. Sold via dedicated website cubik-mineral-outdoor.fr.

Quantifiable outcome

• 250,000 tonnes of concrete products produced annually

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core and minor.

• CERIB (Centre d'Études et de Recherches de l'Industrie du Béton)coreTechnology or IntegrationCERIB contributes to technical progress, improved productivity, and quality development in the concrete products industry. SEPA works with CERIB for product certification and industry standards compliance.
• CSTB (Centre Scientifique et Technique du Bâtiment)coreTechnology or IntegrationThe Scientific and Technical Center for Construction ensures quality and safety of buildings by accompanying product innovation in the building materials industry.
• BlocaliansminorStrategic or Co-development PartnerAssociation of concrete block manufacturers providing information and resources about concrete block construction methods.
• Groupe LéonhartcoreStrategic or Co-development PartnerParent company/group. SEPA is part of the Léonhart Group which includes Sablières Léonhart producing over 700,000 tonnes of aggregates annually, and other companies including Spurgin and CUBIK for natural stone products.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Alkern: Alkern is a leading French manufacturer of concrete products (blocks, pavers, slabs, retaining walls) with multiple production sites across France. Directly comparable to SEPA as a national concrete masonry manufacturer serving the French BTP market with similar product categories including pavers, blocks, and structural elements.
• Spurgin: Spurgin is a French precast concrete manufacturer (structural elements, walls, floors) and is part of the same Groupe Léonhart as SEPA. Highly comparable as a sibling company producing adjacent concrete product lines within the same group, serving overlapping customer bases in French construction.
• Marlux: Marlux is a French manufacturer specializing in concrete pavers, kerbstones, and outdoor landscaping products, owned by CRH. Directly comparable to SEPA's Square and Square XL paver lines and outdoor'aménagement products, serving similar residential and public works customers in France.
• Bouyer Leroux: Bouyer Leroux is a major French manufacturer of clay bricks and concrete blocks for the construction industry. Directly comparable to SEPA in French masonry manufacturing with similar BTP customer base, though more focused on traditional clay brick products.
• Sablières Léonhart: Sablières Léonhart is the aggregates arm of Groupe Léonhart, SEPA's parent group, producing over 700,000 tonnes of aggregates annually across four sites in Alsace-Lorraine. Directly comparable as a sibling business within the same group serving construction materials customers in the same regional market, though focused on upstream aggregates rather than finished concrete products.

Broad incumbents

• Wienerberger: Wienerberger is the world's largest producer of bricks and a leading provider of clay and concrete building solutions across Europe. Comparable as a broad incumbent in masonry/block manufacturing with overlapping product categories (insulating blocks, thin-joint systems) and European market presence, though operating at much larger scale than SEPA.
• CRH plc: CRH is a leading global building materials group with extensive European concrete products operations, including ownership of Alkern and Marlux in France. Comparable as a broad incumbent with deep French market presence in concrete masonry, pavers, and aggregates at significantly larger scale than SEPA.
• Holcim: Holcim (formerly LafargeHolcim) is one of the world's largest building materials companies with significant concrete products and aggregates operations across Europe, including France. Comparable as a broad incumbent in concrete masonry and construction materials, operating at vastly larger scale than SEPA.
• Heidelberg Materials: Heidelberg Materials is a global building materials group with major cement, aggregates, and ready-mixed concrete operations across Europe, including France. Comparable as a broad incumbent with vertical integration from cement through concrete products, operating at much larger scale.
• Cementir Holding: Cementir Holding is an Italian-based multinational cement and concrete producer with operations across Europe and Turkey. Comparable as a broad incumbent in white cement, grey cement, and concrete products, with European market overlap though limited direct French masonry presence.

Market position

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/fabricant.produits.beton.alsace
• LinkedInlinkedin.com/company/sepa-alsace-produits-beton

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 SEPA