Proterra Environnement

What Proterra Environnement does

Proterra Environnement is a French specialist in geomembrane waterproofing (Dispositif d'Étanchéité par Géomembranes, or DEG) founded in 2000 and headquartered in Trappes, with a secondary operational site in La Ville-aux-Dames following the June 2025 merger with FLI France. The company designs and installs multi-layer waterproofing systems using geosynthetic materials — including PEHD, PEBD, PVC, EPDM, bentonitic geosynthetics (GSB), geotextiles, and geocomposites — for three principal product lines: retention/infiltration basins (300 m² to 120,000 m²), waste storage facility (ISD) cells and leachate basins (5,000 to 50,000 m²), and floating covers for evaporation, odor, and biogas management (100 m² to 10,000+ m²). Specialized installation techniques include hot-air welding for polymers, thermo-welding/sewing for geotextiles, and propane torch marouflage for bituminous geomembranes, executed by ASQUAL-certified in-house teams.

The company serves a diversified client base across France, French overseas territories (DOM-TOM including Martinique, Guadeloupe, Guyane, New Caledonia, Mayotte, and French Polynesia), and African markets (Burkina Faso, Djibouti, Togo, Gabon). End customers include waste management majors (Veolia, Séché Environnement, Suez, Paprec, PSI), industrial firms (Siniat), agricultural operators (SAS Les 6 fermes), public-sector bodies (Loudéac Communauté), and infrastructure contractors (Ebomaf). Its go-to-market is enterprise field sales, with project-based custom pricing, bespoke technical studies, and on-site execution by certified mobile teams rather than standardized product offerings.

Revenue is generated primarily through professional services tied to project contracts (study, supply, and installation), complemented by ASQUAL-certified materials supply integrated into turnkey deliveries. The combined Proterra + FLI France entity reported approximately €14 million in 2024 revenue, executed 170+ projects that year, and operates with a workforce of roughly 20 employees. The Thomasset family retains full ownership, with Sébastien Thomasset as Président Directeur Général since founding, and the company holds no external institutional investors or public listings.

Name

Proterra Environnement

Legal name

PROTERRA ENVIRONNEMENT

Website

https://proterra-environnement.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

Proterra Environnement is a French specialist that designs and installs geomembrane waterproofing systems for retention basins, waste storage cells, and floating covers, serving municipalities, waste majors, industrial firms, and agricultural operators across France, DOM-TOM, and Africa with ASQUAL-certified in-house teams.

Ownership category

akta.pro rank

Product category

Geomembrane Waterproofing Services

NAICS

Remediation Services (56291), Waste Treatment and Disposal (56221), Remediation and Other Waste Management Services (5629)

SIC

Refuse Systems (4953), Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Sanitary Services (4950)

akta.pro primary industry

Groundwater Extraction, Treatment & Discharge (Pump-and-Treat, reinjection) (BPALAKAF)

akta.pro secondary industries

Subtitle: Waste Treatment & Disposal — Sub-industries (L4) (EUAIACAA), Sludge/Biosolids Handling & Treatment Facilities Construction (IMAFAGAJ), Inert / Monofill Disposal (Ash, Sludge, C&D Fines, Contaminated Soils) (EUAIACAE), Landfill/Impoundment Hydrogeology (Liners, Leachate, Seepage Studies) (EUAHAFAH)

Keywords

• Geomembrane waterproofing
• Geosynthetic installation services
• Waste storage containment
• Retention basin sealing
• Contaminated land confinement

Headquarters

HQ city

Trappes

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Design and installation of geomembrane waterproofing systems: Project-based engineering, supply of materials, and on-site installation services for waterproofing works. Revenue is generated through bespoke project contracts covering study, supply, and installation phases. Mixed model combining equipment/materials supply with skilled labor.
2. Materials supply (geomembranes and geosynthetics): Supply of ASQUAL-certified geosynthetic materials (PEHD, PEBD, PVC, EPDM, GSB, geotextiles, geocomposites) sourced from leading European suppliers. Integrated as part of turnkey waterproofing project contracts.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Proterra Environnement designs, supplies, and installs turnkey geomembrane waterproofing systems (Dispositif d'Étanchéité par Géomembranes, DEG) for retention basins, waste storage cells (ISD), floating covers, and contaminated land containment. The company handles the full project lifecycle — technical study, ASQUAL-certified materials supply (PEHD, PEBD, PVC, EPDM, bentonitic geosynthetics, geotextiles, geocomposites), professional installation by certified mobile teams, and quality control with DOE delivery. Projects range from 300 m² basins to 120,000 m² waste casings and are delivered in France, DOM-TOM, and Africa.

Product overview

Proterra Environnement is a specialist in geomembrane waterproofing solutions, operating as a multi-specialist in the geosynthetics sector following the acquisition of FLI France in 2023. The company offers a unified portfolio centered on Dispositif d'Étanchéité par Géomembranes (DEG) technology, comprising three main product lines: Bassins (retention basins for water management), Couvertures Flottantes (floating covers for evaporation reduction), and Déchets & Terres Polluées (waste storage cells and contaminated land containment). These solutions are complemented by HDPE pipeline networks for biogas/leachate management. The company uses primarily PEHD geomembranes along with PEBD, polypropylene, PVC, EPDM, bituminous geomembranes, bentonitic geosynthetics, geotextiles, and geocomposites, applying specific welding techniques for each material family.

Differentiator

Problem solved

Functional benefit

Products and services

• Bassins (Retention Basins)

Quantifiable outcome

• Evaporation reduction of up to 95% with floating covers
• +4 more outcomes

Named customers11 records

Segments5 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

Five partnerships are on record, tiered minor and core.

• Lessard EntreprisesminorStrategic or Co-development Partner · 1 September 2025Partnered with Lessard Entreprises on the Loudéac community project to confine polluted soils on the former 'La Grande Prise' industrial site, preparing it for photovoltaic park installation. Proterra handled the DEG waterproofing while Lessard managed the broader site development.
• EbomafminorStrategic or Co-development Partner · 1 July 2025Collaboration with Ebomaf on the Ntoum-Cocobeach road project in Gabon (83 km). Ebomaf serves as the main contractor for road construction while Proterra provides geomembrane waterproofing services for the road platform to manage subsurface hydraulic conditions and ensure asphalt durability.
• FLI FrancecoreStrategic or Co-development Partner · 1 November 2023Acquisition of FLI France in November 2023, officially absorbed into Proterra Environnement on June 1, 2025. FLI France was based in La Ville-aux-Dames (37) and specialized in geomembrane waterproofing of casings at waste storage installations, complementing Proterra's basin-focused activity. The merger created synergies enabling a complete geomembrane waterproofing offering across all market segments and territories.
• AFAG (Association Française des Applicateurs de Géomembranes)coreOthersActive member of AFAG. Membership commits Proterra to adhere to geomembrane application best practices and industry recommendations for waterproofing of basins, casings, and floating covers.
• CFG (Comité Français des Géosynthétiques)coreOthersActive member of CFG. Membership supports standards compliance and professional development in geosynthetic waterproofing applications.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Emerging players

• Chryso (Saint-Gobain): French construction chemicals business (part of Saint-Gobain) with growing presence in waterproofing and infrastructure solutions. Emerging player with broader specialty chemicals portfolio that competes on adjacent waterproofing applications for civil engineering and waste infrastructure.

Direct peers

• Atarfil: Spanish geomembrane manufacturer and installer focused on environmental and hydraulic applications. Direct peer with comparable PEHD and other geosynthetic membrane solutions for basins, waste cells, and containment projects.
• Carpi Tech: Swiss-based specialist in geomembrane installation for hydraulic works, including reservoir liners, dam waterproofing, and floating covers. Comparable niche specialist serving infrastructure projects globally with similar geosynthetic waterproofing capabilities.
• Sotrafa: Spanish manufacturer and installer of geomembranes for civil engineering, environmental, and hydraulic works. Comparable to Proterra as a specialist applicator offering PEHD and other geosynthetic waterproofing systems across retention basins, landfills, and water infrastructure projects in southern Europe and Latin America.
• Layfield Group: North American geosynthetics manufacturer and installer serving environmental containment, water management, and waste storage applications. Comparable to Proterra through installation of geomembranes, floating covers, and liner systems for industrial and waste infrastructure.
• Afitex: French geosynthetics specialist offering drainage geocomposites, geomembranes, and bentonitic products for environmental and civil engineering applications. Direct French competitor in the same DEG waterproofing market segment.
• Solmax International: Canadian-headquartered global manufacturer and installer of geomembranes used in environmental containment, mining, waste management, and water infrastructure. Direct peer with overlapping geosynthetic waterproofing solutions for basins, landfills, and containment applications.

Broad incumbents

• Sika AG: Global Swiss specialty chemicals company with a waterproofing systems division offering membranes, coatings, and sealing solutions for tunneling, basements, and infrastructure. Broad incumbent whose waterproofing portfolio overlaps with Proterra's geomembrane offerings in adjacent infrastructure segments.
• Renolit Ondex: European manufacturer of geomembranes and plastics products including waterproofing systems for environmental and civil engineering applications. Broader incumbent supplying materials and prefabricated systems that compete with Proterra's installation scope.
• Naue GmbH & Co. KG: German geosynthetics manufacturer offering geotextiles, geomembranes, bentonite liners (BentoLiner), and geocomposites for environmental engineering and waste containment. Comparable as a supplier/integrator of the same material families Proterra installs (PEHD, GSB, geocomposites).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/proterra-environnement

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Proterra Environnement