EXTHA

What EXTHA does

EXTHA (legal entity EXTHA SUD OUEST, an SAS headquartered in Groslay, Île-de-France) designs, manufactures and sells passive fire protection products for buildings, with operations since 1984. The core offering is the EXTHAMAT line of fibre-reinforced plaster boards certified EI 60 to EI 120 under EN 1366-1 and EN 1366-8, sold as part of complete systems for fire-rated staff ducts, smoke extraction conduits, structural enclosures and access doors. Manufacturing is vertically integrated in the company's Carcar, Spain plant, where boards are produced through a proprietary air-drying process that uses no gas or external energy, claimed unique in the market and positioned for both product performance and reduced carbon footprint. Supporting accessories — EXTHAFIX adhesive, EXTHABAG jointing plaster, fire-rated cable channels (caniveaux) and pipe shells (coquilles) — are tested together with the boards, reinforcing a system-sale proposition.

The company sells exclusively BtoB to building professionals — architects, engineering firms, contractors, installation companies and facility managers — across three French regional subsidiaries (Île-de-France/Groslay, Est/Strasbourg, Sud-Ouest/Bordeaux), with delivery across metropolitan France and limited cross-Europe shipment. GTM is sales-led, quote-based (devis) with a guaranteed 24-hour response, supported by an in-house bureau d'études, an online EXTHAMAT materials calculator, technical documentation downloads and a project-references portfolio that includes Tour First La Défense, a Neuilly-sur-Seine healthcare centre, a Versailles residential programme, an Orly logistics warehouse and a Paris metro project. Compliance positioning across EN 1366/EN 13501, ISO 45001 (obtained December 2025) and EI 120/REI 120 ratings is the dominant qualification lever for ERP and IGH tenders.

Revenue is generated almost entirely from one-time product sales of boards, ducts, spray coatings (FIREMAT) and accessories, priced on a quote basis in euros HT; a separate technical-services stream supports specification via the bureau d'études. Recent commercial moves — the November 2025 Prescale strategic partnership, the January 2026 EXTHA Academy launch with CKM Formation, and the March 2026 launch of a new high-resistance EXTHAMAT range — point to an extension of the model from product sale toward full technical-solution and certified-trainer ecosystems, while preserving the same certified-system core.

Name

EXTHA

Legal name

EXTHA SUD OUEST

Website

https://extha.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

11–50 employees

Short description

EXTHA is a French manufacturer founded in 1984 that designs, produces and sells EN 1366/EN 13501-certified passive fire protection systems — fibre-reinforced plaster boards, ducts, spray coatings and accessories — to B2B building professionals across ERP, IGH, residential, healthcare, industrial and transport projects in France and Europe.

Ownership category

akta.pro rank

Product category

Fire Protection Building Materials

NAICS

Paint, Coating, and Adhesive Manufacturing (3255)

SIC

Paints, Varnishes, Lacquers, Enamels & Allied Prods (2851)

akta.pro primary industry

Fire Door, Firestop & Passive Fire Protection Inspection/Installation (IMAIAJAJ)

akta.pro secondary industries

Fireproofing & Intumescent Coatings (IMAIAKAH), Fire-Resistant, Moisture-Resistant & Specialty Performance Boards (IMADAEAJ), Fire & Smoke Dampers / Firestopping / Passive Fire Protection Services (BPABAHAE)

Keywords

• Passive fire protection
• Fire-rated plaster boards
• Smoke extraction ducts
• Structural fire protection
• Fire safety products

Headquarters

HQ city

Groslay

HQ country

France

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Fire protection product sales: EXTHA generates revenue through direct BtoB sales of passive fire protection products and systems. Products include EXTHAMAT boards, FIREMAT coating, staff ducts, smoke extraction ducts, enclosures, fire-rated access doors (EXTHAMAT TRAP), and accessories (EXTHAFIX adhesive, EXTHABAG plaster, cable channels, pipe shells). Pricing is quote-based (sur devis), with quotes valid for 30 days. All prices are in euros HT (excluding taxes).
2. Technical services and support: EXTHA provides technical bureau d'études support for project specification, technical documentation, fire test reports, and CE declarations. Technical team assistance available for product selection and installation guidance.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

EXTHA designs, manufactures, and sells passive fire protection products for buildings, including fibre-reinforced plaster boards (EXTHAMAT® EI 60/EI 120), fire-rated staff ducts, smoke extraction conduits, spray-applied fire protection coatings (FIREMAT REI 120), fire-rated access doors (EXTHAMAT TRAP), and certified accessories (EXTHAFIX adhesive, EXTHABAG plaster, cable channels, pipe shells). All products are manufactured at the company's factory in Carcar, Spain, using a unique gas-free air-drying process, and certified to EN 1366 and EN 13501 European standards.

Product overview

EXTHA is a manufacturer of passive fire protection products, founded in 1984, offering a comprehensive range of fire-rated construction solutions. The core product is the EXTHAMAT® line of fibre-reinforced plaster boards (EI 60/EI 120 certified), which form the foundation for staff ducts, structural enclosures, and smoke extraction systems. The FIREMAT product family provides spray-applied fire protection coating for steel structures. Supporting accessories include EXTHAFIX adhesive, EXTHABAG jointing plaster, fire-rated cable channels (caniveaux), and pipe shells (coquilles). The product portfolio is organized around systems (gaines staff, désenfumage, flocage, conduit, encoffrement, VTP, plat carbone) and accessories (EXTHAMAT TRAP access doors, adhesives, plasters, channels). All products are manufactured in France/Spain and certified to EN 1366 and EN 13501 European standards.

Differentiator

Problem solved

Functional benefit

Brands

• EXTHAMAT®: Fire-rated boards EI 60 / EI 120 for duct enclosures, structures and fire-rated partitions
• EXTHAMAT TRAP
• FIREMAT
• EXTHAFIX
• EXTHABAG
• EXTHA Academy
• EXTHAMAT P

Products and services

• EXTHAMAT® fibre-reinforced plaster fire-rated boards Fibre-reinforced plaster fire-rated boards (EI 60 to EI 120) manufactured via an air-drying process without gas, used to construct staff ducts, structural enclosures, and ventilation/smoke extraction conduits. Single-layer 35mm configuration achieves EI 120. A1 non-combustible per EN 13501-1, certified EN 1366-1 and EN 1366-8. Sold B2B to building professionals.
• EXTHAMAT TRAP fire-rated access doors Fire-rated access doors (EI 30 to EI 120) for staff ducts and fire-rated conduits, providing maintenance access while preserving fire resistance classification. Certified EN 1634-1. For ERP, IGH, and residential buildings.
• FIREMAT spray-applied fire protection coating Projected fire protection coating applied to steel structures and concrete, achieving REI 120 classification per EN 1366 standards. Used for structural elements in public buildings, high-rise towers, and industrial facilities.
• Caniveau coupe-feu (fire-rated cable channels) U-section fire-rated cable channels providing linear protection for cable trays and pipework passing through fire-rated walls and floors. Sold as certified accessory completing the EXTHAMAT system.
• Coquille (fire-rated pipe shell) Fire-rated pipe shell for protection of pipework passing through fire-rated walls, ensuring continuity of fire resistance at penetrations. Sold as certified accessory.
• EXTHAFIX fire-rated bonding adhesive Fire-rated bonding adhesive formulated for EXTHAMAT boards, ensuring rapid, durable bonding between boards and onto concrete, metal, and masonry substrates under fire conditions. Sold as certified accessory within the EXTHAMAT system.
• EXTHABAG fire-rated jointing plaster Fire-rated jointing plaster and filling compound for treating joints between EXTHAMAT boards, filling penetrations, and finishing staff ducts. Sold as certified accessory within the EXTHAMAT system.
• Gaines staff fire-rated duct system Complete fire-rated staff duct system EI 120 for ventilation and smoke extraction, certified EN 1366. Sold as a system to building professionals for ERP, IGH, and residential applications.
• Désenfumage coupe-feu (smoke extraction duct system) Smoke extraction ducts EI 120 S certified EN 1366-8, guaranteeing smoke tightness. Sold as a complete system for all building types subject to fire safety regulations.
• Flocage coupe-feu (spray-applied fire protection system) Spray-applied fire protection coating system on steel structures and concrete achieving REI 120 protection per EN 1366 standards. Sold as a complete fire protection service/product system.
• Système conduit coupe-feu (fire-rated duct system) Fire-rated duct system EI 120 for ventilation and smoke extraction, certified EN 1366-1 and EN 1366-8. Sold as a complete certified system.
• Système encoffrement (fire-rated enclosure system) Enclosure system for technical ducts and cable trays achieving EI 60 to EI 120 fire resistance ratings. Sold as a complete certified system.
• VTP — Volume Technique Protégé Full fire-rated EI 120 enclosure of complete technical volumes, a custom solution for ERP and high-rise buildings protecting sensitive technical spaces.
• Plat carbone specialist passive fire protection solution Specialist passive fire protection solution for carbon flat applications, extending the EXTHAMAT-based system range to specialist industrial uses.

Quantifiable outcome

• EI 120 fire resistance in single-layer configuration (35mm EXTHAMAT)
• +3 more outcomes

Named customers8 records

Segments5 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core and minor.

• PrescalecoreStrategic or Co-development Partner · 1 November 2025Strategic partnership announced November 2025. EXTHA and Prescale unite their forces to strengthen the offering of complete technical solutions in passive fire protection for major projects. This partnership aims to provide comprehensive fire protection solutions on large-scale construction projects.
• CKM FormationcoreStrategic or Co-development Partner · 1 January 2024Launch of EXTHA Academy in partnership with CKM Formation (https://www.ckmformation.com). EXTHA Academy offers certifying training programmes for passive fire protection. First sessions available Q1 2026. Aims to share expertise and certify prescribers, installers, and project managers.
• ResolvRminorOthersResolvR (https://resolvrapp.fr) is listed among EXTHA's partner ecosystem on the website footer. Nature of partnership not explicitly detailed.

Scale indicators6 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Promat (Etex Group): Promat is the leading European manufacturer of passive fire protection boards, calcium silicate panels and spray-applied coatings for ducts, steel and concrete — directly comparable to EXTHA's EXTHAMAT board and FIREMAT spray product lines, and the most likely head-to-head competitor on French ERP/IGH tenders.
• Knauf Firewin: Knauf's Firewin range offers fire-rated plasterboards and shaft-wall systems for staff ducts and enclosures; the same product category and customer base (architects, contractors, specifiers) as EXTHA, with comparable EN 1366 certifications.
• Siniat (Etex Group): Siniat supplies fire-rated plasterboards and drywall systems under the Etex umbrella; competes with EXTHAMAT in fire-rated partitions, duct enclosures and compartmentalisation in French residential and commercial construction.
• Rockwool: Rockwool manufactures stone-wool-based fire protection boards, batts and pipe sections for ducts and structural steel — a substitute technology competing with EXTHAMAT plaster boards for the same EI 60/120 specifications in European construction.
• Hilti: Hilti's firestop portfolio (sleeves, sealants, boards, pre-formed devices) competes with EXTHA's caniveaux coupe-feu, coquilles and EXTHAFIX/EXTHABAG accessories for fire-rated penetrations and joint treatments.
• Nullifire (Tremco CPG): Nullifire specialises in intumescent and fire-resistant spray coatings for structural steel — directly comparable to EXTHA's FIREMAT flocage coupe-feu product line for REI 120 steel protection in public and high-rise buildings.

Broad incumbents

• 3M (Fire Protection / firestopping): 3M's passive fire protection range (FB-3000 WT, FS-195+ and other firestop products) targets the same specifier/contractor base as EXTHA, addressing fire-rated penetrations, joints and ductwork in commercial and industrial construction.
• Saint-Gobain (ISOVER / Placoplatre): Saint-Gobain's Placoplatre and ISOVER brands supply fire-rated plasterboards and stone wool insulation respectively; they compete with EXTHAMAT in fire-rated partitions while offering a much broader construction-materials portfolio and pan-European distribution.
• BASF Master Builders Solutions: BASF Master Builders Solutions supplies fire-protective mortars, sprays and coatings for steel, concrete and tunnel infrastructure — overlapping with EXTHA's FIREMAT flocage and structural protection range at the specification level.

Emerging players

• Unilin Insulation (Xtratherm / UTHERM): Unilin Insulation markets fire-rated PIR and stone-wool boards for duct and structural applications; competes as a substitute product family against EXTHAMAT plaster systems in the French and Benelux markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/EXTHA-100076150806304
• LinkedInlinkedin.com/company/extha-ile-de-france

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 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 EXTHA