ATELIERS LOIRE - CHARTRES

What ATELIERS LOIRE - CHARTRES does

Ateliers Loire is a privately held, family-owned stained glass atelier founded in 1946 by Gabriel Loire in Chartres, France, and currently directed by the third generation of the Loire family (Jacques, Bruno and Hervé Loire). The company specializes in the creation and restoration of stained glass using six core techniques: traditional lead came (vitrail traditionnel), dalle de verre (slab glass, the company's signature since 1946), thermoforming and fusing at temperatures up to 840°C, enameling, double-glazing integration, and glass tempering. Operations run from a 1,000+ m² workshop complex in Lèves near Chartres with specialized equipment including kilns measuring up to 170x320cm, supported by an inventory of over 250 dalle de verre color shades and over 300 traditional glass nuances.

The business serves religious institutions (cathedrals, churches, chapels), public and cultural venues (museums, schools, government buildings, transport hubs), private residences, and contemporary artists requiring technical execution of stained glass designs. Restoration of French heritage monuments — including Chartres Cathedral, Château de Chambord, the Palais de l'Élysée and the Kaiser Wilhelm Gedächtniskirche in Berlin (2,183 m² of glass) — is a core competency and a key revenue driver. The atelier complements its custom-commission business with three wholly-owned retail/exhibition channels: La Galerie du Vitrail (since 1976, retail gallery facing Chartres Cathedral), L'Antiquaire du Vitrail (since 1976, antique stained glass dealer), and Expressions Vitrail (contemporary exhibition space); plus an outdoor La Vitrailleraie exhibition in the workshop gardens.

The revenue model is custom-commission-based with project-specific quote pricing and multi-year contract cadence for major works. There are no publicly disclosed prices or financial figures. Distribution is primarily direct sales through the atelier, supplemented by retail galleries and a limited set of international commissions documented across 50+ countries on five continents (over 778 catalogued projects). The company has raised no external funding, holds no patents, and operates with a team of approximately 10 craftspeople, indicating a stable, craft-scale operation rather than a venture-backed growth business.

Name

ATELIERS LOIRE - CHARTRES

Legal name

Ateliers Loire

Website

https://ateliers-loire.fr

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

1–10 employees

Short description

Ateliers Loire is a third-generation, family-owned stained glass atelier in Chartres, France, founded in 1946. It creates and restores stained glass for cathedrals, public buildings, museums and private clients worldwide, using traditional lead came, dalle de verre, thermoforming and fusing techniques.

Ownership category

akta.pro rank

Headquarters

HQ city

Lèves

HQ country

France

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

1. Custom Stained Glass Creation: Creation of custom stained glass windows for religious buildings (cathedrals, churches, chapels), public institutions (schools, hotels, restaurants, cultural centers), and private residences. Projects are commissioned and bid on, typically large-scale and international.
2. Stained Glass Restoration: Restoration services for antique and traditional stained glass, including heritage buildings like Chartres Cathedral, Château de Chambord, and other historic monuments.
3. Books and Publications: Sale of books about Gabriel Loire and Jacques Loire's stained glass work, including 'Jacques Loire - Vitraux', 'Les vitraux de Gabriel Loire à Kervignac', and 'Gabriel Loire Vitraux / Stained glass' (235 pages, published by Centre International du Vitrail in 1996). Also brochure 'Ateliers Loire Chartres - Vitraux et décors verriers' (36 pages).
4. Gallery Sales: La Galerie du Vitrail (opened 1976, 250+ m²) sells contemporary stained glass by French and foreign artists, antique stained glass (19th-20th century), specialized books (350+ titles), mirrors, lamps, glass objects, and hobby materials (glass, lead, tools). Also sells books and DVDs about the atelier.
5. Antique Stained Glass Sales: L'Antiquaire du Vitrail (operated by Micheline Loire since 1976) searches, selects, buys and resells stained glass from 1870-1940 period, with some pieces dating to the 16th century. Primarily French origin from castles, mansions, buildings, churches and chapels. Main clients are decorators and private individuals.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels7 records

Core offering

Ateliers Loire designs, creates, and restores stained glass using traditional and modern techniques including dalle de verre (slab glass), lead came, thermoforming, fusing, enameling, double glazing integration, and glass tempering. The atelier serves cathedrals, churches, public institutions, museums, and private residences across five continents, executing both commissioned new works and heritage restoration projects.

Product overview

Ateliers Loire is a three-generation stained glass workshop founded in 1946 by Gabriel Loire, specializing in creation and restoration of stained glass. The company operates as a craftsman workshop with five core products: Vitrail traditionnel (leaded stained glass), Dalle de verre (slab glass technique), Thermoformage-Fusing-Émaillage (advanced glass techniques), Mise en double vitrage (double glazing), and Trempe des verres (glass tempering). Complementary services include restoration of both traditional leaded and slab glass stained windows. Related activities include La Galerie du Vitrail (gallery), L'Antiquaire du Vitrail (antique dealer), La Vitrailleraie (outdoor exhibition), and Expressions Vitrail (contemporary exhibition space). The workshop also creates vitraux for private homes, public institutions, religious buildings, and exterior works, collaborating with internationally renowned artists.

Differentiator

Problem solved

Functional benefit

Products and services

• Vitrail traditionnel (plomb) Traditional leaded stained glass technique using antique mouth-blown glasses, grisaille painting fired at 650°C, and lead came with tin soldering. Offers over 300 color and material variations sourced from multiple glassworks including Saint Just-sur-Loire. Used for religious buildings, public institutions, and private residences.
• Dalle de verre (Slab Glass) Specialty slab glass technique using 22mm thick glass tiles colored in the mass, shaped with a hammer to diffract light, and set in cement or epoxy resin mortar. Features over 250 color shades in stock. The atelier's signature technique used in projects worldwide.
• Thermoforming, Fusing and Enameling Advanced glass techniques including thermoforming (glass softened under heat and shaped over molds by gravity), fusing (superimposed glasses fused at 840°C), resin lamination, silicone bonding, screen printing, and spray gun enameling. Uses large kilns with useful dimensions of 170x320cm and 150x250cm, enabling very large format works.
• Double Glazing Integration (Mise en double vitrage) Installation of traditional stained glass between two panes of insulating glass, providing thermal and acoustic insulation, security, and protection of the artwork. Meets safety requirements for public buildings while preserving artistic integrity.
• Glass Tempering (Trempe des verres) Glass tempering process making glass much more resistant to mechanical and thermal shock. Tempered glass can be assembled in insulating glazing, addressing safety and security architecture requirements for stained glass installations.
• Restoration of Traditional Leaded Stained Glass Restoration of antique and traditional stained glass windows using lead came techniques. Specializes in 19th and 20th century religious stained glass. Notable projects include Chartres Cathedral, Château de Chambord, and Palais de l'Élysée.
• Restoration of Dalle de Verre Stained Glass Specialized restoration of slab glass (dalle de verre) stained glass addressing specific alterations related to materials (glass slabs, cement, armature) and installation principles. Collaborates with CERIB (Centre de Recherche des Industries du Béton) for developing new cement mortars.
• La Galerie du Vitrail Retail gallery of over 250m² featuring contemporary stained glass from French and foreign artists, antique stained glass (19th-20th century), a specialized library with 350+ titles on stained glass, boutique with mirrors, lamps, glass objects, and a hobby section with materials for stained glass making. Open to the public.
• L'Antiquaire du Vitrail Antique stained glass dealer that searches, selects, buys and resells stained glass from the 1870-1940 period, with some pieces dating to the 16th century. Primarily French origin from castles, residences, buildings, churches and chapels. Serves decorators and private individuals.
• La Vitrailleraie (Outdoor Exhibition) Permanent outdoor stained glass exhibition in the gardens of the Lèves workshop, featuring approximately sixty artworks catching sunlight among trees, along paths, and on lawns. Showcases the diversity of materials, techniques and creativity of Loire artists and guest artists.
• Expressions Vitrail (Exhibition Space) Exhibition space at the foot of Chartres Cathedral (15 bis Cloître Notre-Dame) presenting the diversity and richness of contemporary stained glass creations made at Ateliers Loire. Hosts artists, plastic artists, and decorators for glass and stained glass commissions.

Quantifiable outcome

• Over 778 documented projects in the database, with works present on all 5 continents
• +2 more outcomes

Named customers14 records

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered minor and core.

• Centre International du VitrailminorOthers · 1 January 1976Partnership for book publishing. The Centre International du Vitrail published 'Gabriel Loire Vitraux / Stained glass' by Charles W. Pratt and Joan C. Pratt in 1996 (235 pages), available for sale at La Galerie du Vitrail.
• Glass Artists and CollaboratorscoreStrategic or Co-development PartnerThe atelier works with over 100 named artists including Valério Adami, François Morellet, Jean-Michel Othoniel, Peter Klasen, Jean-Michel Folon, Kim En Joong, and many others for the realization of their stained glass projects. These are artist-atelier collaborations where the atelier provides technical execution of artists' designs.

Scale indicators7 records

Recent moves12 records

Expansion highlights5 records

Direct peers

• Franz Mayer of Munich: German stained glass and mosaic studio founded in 1827 with worldwide commissions for cathedrals, palaces, and museums — directly comparable heritage atelier with similar international portfolio and craft specialization in leaded stained glass.
• Advena Studios: UK studio producing stained glass for new commissions and restoration projects across the UK and Europe — comparable in scale, craft specialization, and ecclesiastical/institutional client base.
• York Glaziers Trust: UK-based non-profit heritage stained glass conservation studio founded in 1967, specializing in the conservation and restoration of historic stained glass including York Minster — closely comparable in heritage restoration focus and craft specialization.
• Mauméjean: Historic French stained glass atelier operating since 1860 with active workshops for restoration and creation across Europe, the Americas, and Asia — directly comparable French-rooted stained glass peer with multi-generational heritage.
• Judson Studios: Los Angeles-based stained glass atelier operating continuously since 1897, offering both new commissions and historic restoration for religious and institutional clients across the US — directly comparable craft atelier with international religious and civic project rosters.
• Beyerlen's Stained Glass Studio: US-based stained glass studio offering design, fabrication, and restoration services for churches, synagogues, and public institutions — directly comparable craft-studio model serving religious and civic end markets.
• Willet Hauser Architectural Glass: Minnesota-based stained glass studio founded in 1898 providing new stained glass design, fabrication, and historic restoration for cathedrals, churches, and public buildings worldwide — a direct comparable in heritage restoration scale and craft specialization.

Others

• CERIB (Centre d'Études et de Recherches de l'Industrie du Béton): French concrete-industry research partner that collaborates with Ateliers Loire on cement-mortar formulations used in dalle de verre restoration — a technology/enabling partner rather than competitor, illustrating the ecosystem of specialty suppliers the atelier integrates.

Broad incumbents

• Pilkington Glass: Global float and architectural glass manufacturer supplying raw and processed glass products used in construction, automotive, and specialty applications — adjacent incumbent whose glass substrates flow into stained glass ateliers including Ateliers Loire's traditional lead-came technique.
• Saint-Gobain: Major French and global glass manufacturer producing flat, specialty, and architectural glass products including glass components that feed heritage and contemporary architectural projects — adjacent broad incumbent in glass materials the atelier relies upon.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCNpp_I0Ma8WYtBrPEhqRH_Q
• Facebookfacebook.com/ateliersloire
• Instagraminstagram.com/ateliersloire
• LinkedInlinkedin.com/company/ateliersloire

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries4 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 ATELIERS LOIRE - CHARTRES