La Chaux Saint-Astier®

What La Chaux Saint-Astier® does

La Chaux Saint-Astier® is a family-owned, fourth-generation French manufacturer headquartered in Saint-Astier, Dordogne (Périgord Blanc). The company quarries and processes its own limestone deposit to produce pure Natural Hydraulic Limes (NHL) under the EN 459-1 classification, alongside formulated limes, technical mortars, facade solutions, bio-sourced hemp-lime composites (BATICHANVRE®), and insulating renders under the NOVASKIN sub-brand. An in-house R&D laboratory supports continuous formulation work, including recent reduced-carbon-footprint product upgrades. The company holds the Entreprise du Patrimoine Vivant (EPV) label from the French Ministry of Economy recognizing industrial craftsmanship, and runs a Qualiopi-certified training centre for lime application professionals.

The commercial model is B2B-led and distribution-driven. Products are sold in standardized 25kg bags (following a 2024 range refresh) and bulk quantities through French material distributeurs (négoce en matériaux) and independent professional stores, with field sales representatives providing technical specification support to architects, heritage conservation specialists, and contractors. A dedicated international distribution network covers seventeen countries across Europe, Oceania, Africa, and the Middle East, and a new direct-to-consumer sample-sales e-commerce channel was added in 2025. Revenue streams include building materials sales, professional training services, and ancillary services. The customer base is segmented across heritage restoration (including UNESCO sites such as Abbaye de Fontevraud), renovation, new construction, and decorative finishing.

The strategic posture in 2025–2026 emphasizes sustainability-led product expansion and ecosystem partnerships. The November 2025 launch of BATICHANVRE® PLUS variants and the December 2025 strategic partnership with IsoHemp® (a hemp-block specialist) anchor an explicit move into bio-sourced, low-carbon building systems. The company remains privately held by the founding family with no external venture capital or private equity involvement evident in the source material, and operates with a headcount band of 51–100 employees from a single integrated production site in Dordogne.

Name

La Chaux Saint-Astier®

Legal name

CHAUX DE SAINT ASTIER

Website

https://saint-astier.com

Company type

Private

Founded year

1912

Operating status

Operating

Headcount range

51–100 employees

Short description

La Chaux Saint-Astier® is a fourth-generation family-owned French producer of pure Natural Hydraulic Limes, formulated limes, technical mortars, and bio-sourced hemp-lime composites, serving heritage restoration professionals, renovation contractors, and specifiers across France and 17 international markets via B2B distributor and négoce channels.

Ownership category

akta.pro rank

Product category

Building Materials (Lime-Based Construction Products)

NAICS

Lime and Gypsum Product Manufacturing (3274), Lime Manufacturing (32741)

SIC

Industrial Inorganic Chemicals (2810)

akta.pro primary industry

Cementitious Binders & Additives (Fly Ash, Slag, Silica Fume, Lime) (IMADAAAH)

akta.pro secondary industry

Soil Amendments & Conditioners (Lime/Gypsum/Humates) (IMAEAEAH)

Keywords

• Natural hydraulic lime
• Technical mortars
• Heritage restoration materials
• Bio-sourced building materials
• Construction lime products

Headquarters

HQ city

Saint-astier

HQ country

France

HQ region

Europe

Offices1 record

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. Building Materials Sales: Direct sales of Natural Hydraulic Limes, formulated limes, and technical mortars to professional builders, restoration contractors, and material distributors. Products sold in 25kg bags and bulk quantities through B2B distribution network.
2. Professional Training Services: Revenue from professional training programs on lime applications, certified Qualiopi. Training covers mortars and hemp concrete, decorative lime finishes, stone repair, and facade renovation.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels3 records

Core offering

La Chaux Saint-Astier® manufactures pure natural hydraulic limes (NHL), formulated limes, and technical mortars from limestone quarried at its Périgord Blanc facility in Saint-Astier, France. The company produces a portfolio of 11 product families covering heritage restoration, renovation, new construction, decoration, facades, flooring, specialty products, and bio-sourced hemp-lime insulation composites (Batichanvre®). It also operates a Qualiopi-certified professional training center (Centre de Formation Saint-Astier®) on lime applications.

Product overview

La Chaux Saint-Astier® is a family-owned French company producing natural hydraulic lime (NHL) products and technical mortars for the construction industry. The company offers a comprehensive portfolio organized into distinct product ranges: Chaux Hydrauliques Naturelles Pures (pure natural hydraulic limes) as the core foundation, supplemented by Chaux Formulées (formulated limes) and Mortiers Techniques (technical mortars) for specialized applications. The product line spans multiple categories including Gamme Restauration for heritage restoration, Gamme Rénovation for building renovation, Gamme pour le Neuf for new construction, Gamme Décoration for decorative finishes, Gamme Façades Plâtre for facade plasters, Gamme Sol for flooring, Gamme Spécialité for specialty products, and Gamme Enduits Isolants NOVASKIN for insulating renders. Recent additions include the Eco-matériaux range featuring bio-sourced solutions like BATICHANVRE® PLUS and BATICHANVRE® ISOL PLUS (hemp-lime composites). Products are available through material distributors and independent professional stores, with technical support from the company's field sales team.

Differentiator

Problem solved

Functional benefit

Brands

• NOVASKIN: Gamme Enduits Isolants NOVASKIN - Insulating render product range

Products and services

• Chaux Hydrauliques Naturelles Pures (Pure Natural Hydraulic Limes) Pure natural hydraulic lime (NHL) binders manufactured from the unique limestone deposit in Saint-Astier, Périgord Blanc, France. Used by restoration contractors, heritage architects, and builders for masonry, rendering, and consolidation work compatible with historic structures.
• Chaux Formulées (Formulated Limes) Formulated lime products that combine natural hydraulic lime with additives to deliver specific performance characteristics for rendering, masonry, and finishing applications. Sold to professional builders through material distributors.
• Mortiers Techniques (Technical Mortars) Technical mortar products designed for specialized construction and restoration applications, including structural repair, consolidation, and facade work for professional contractors and restoration specialists.
• Solutions Façade (Facade Solutions) Facade-focused products including renders, plasters, and finishing solutions for building exteriors. Targeted at professional applicators and renovation contractors.
• Solutions Bio-sourcées (Bio-sourced Solutions) Eco-friendly building materials including BATICHANVRE® hemp-lime composites, designed for sustainable new construction, renovation, and insulation projects for environmentally conscious builders.
• BATICHANVRE® PLUS Bio-sourced hemp-lime construction product with a richer NHL formula yielding a reduced carbon footprint, used for walls, insulation, and structure by professional builders focused on sustainable construction.
• BATICHANVRE® ISOL PLUS Bio-sourced insulating hemp-lime product with a richer NHL formula, providing improved thermal performance and reduced environmental impact for professional insulation applications.
• Gamme Enduits Isolants NOVASKIN (NOVASKIN Insulating Renders) Insulating render products marketed under the NOVASKIN sub-brand for thermal insulation of building envelopes, sold to professional applicators.
• Centre de Formation Saint-Astier® (Professional Lime Training Programs) Qualiopi-certified professional training programs covering lime applications: mortars and hemp concrete, decorative lime finishes, stone repair and patinas, facade renovation, and thin-film lime coatings. Targeted at building professionals, contractors, and architects.

Named customers2 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

Feature1 record

Partnerships

Three partnerships are on record, tiered core and minor.

• IsoHemp®coreStrategic or Co-development Partner · 30 December 2025Strategic partnership announced December 2025 for joint development and distribution of complementary building solutions. IsoHemp specializes in hemp-based building materials while Saint-Astier provides natural hydraulic lime expertise.
• Qualiopi Certification BodycoreOthersThe company's training center (Centre de Formation Saint-Astier®) is certified Qualiopi, meeting quality standards for professional training delivery in France.
• Formation Network PartnersminorImplementation/ SI/ Consulting PartnerPartnership network supporting professional training including: CenC (Construction), RNCP, Compagnons du Devoir, Odéys, Usine Végétale, Avignon Ecole, Guyenne, LISAA, CFA BTP, ARCHIMATERIAL, REMPART, ANABF, FFB, MPF, GMH, Fondation du Patrimoine, CREPA-BFC, Construire en Paille, Cluster Eco-Batiment, CAPEB, AFNOR, MP Dordogne, Pavillon de l'Architecture de Pau, Architectes du Patrimoine, VMF, Pole Construction FFB Paris, Unaid.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Vicat: French cement, concrete, and lime producer with heritage in lime manufacturing dating to the 19th century. Closely comparable to Saint-Astier as a French building materials manufacturer with overlapping product categories (cement, lime, mortars) and similar European construction customer base, though much larger in scale.
• Ty-Mawr Lime: Welsh producer of lime-based building materials including natural hydraulic limes, lime plasters, and insulating lime products for heritage and eco-construction. Closely comparable to Saint-Astier as a specialist heritage and eco-construction lime supplier, though much smaller and UK-focused.

Broad incumbents

• Carmeuse: Global lime and limestone producer headquartered in Belgium, supplying building materials, environmental, and industrial customers. Comparable to Saint-Astier in core lime manufacturing, but operates at significantly larger scale with multi-continent footprint.
• Lhoist Group: Belgian-headquartered global leader in lime and dolime production, serving construction, environmental, and industrial markets. Directly comparable to Saint-Astier as a major lime producer, but far larger in scale and diversified across multiple end-markets.
• Imerys: French-listed specialty minerals group producing mineral-based specialty ingredients for construction and industrial applications. Comparable as a French industrial minerals supplier with construction exposure, though far larger and more diversified across non-lime categories.
• Graymont: Canadian-headquartered lime producer serving construction, steel, environmental, and chemical markets across North America and Asia-Pacific. Comparable as a lime manufacturer but with a broader geographic and end-market mix than Saint-Astier's heritage-focused niche.
• Heidelberg Materials: German-headquartered global building materials group producing cement, aggregates, and ready-mixed concrete. Comparable as a major European building materials incumbent serving construction professionals, though lime is a secondary rather than core product line.

Emerging players

• IsoHemp: Belgian producer of hempcrete blocks and hemp-based construction solutions, partnered with Saint-Astier since December 2025. Emerging peer in bio-sourced construction intersecting Saint-Astier's hemp-lime (BATICHANVRE®) product line.

Others

• Omya: Swiss-headquartered producer of industrial minerals including ground calcium carbonate and lime products for construction and industrial applications. Adjacent peer supplying mineral inputs and competing in some construction material categories.

Regional players

• Chaux et Enduits de Saint-Astier (historical namesake) / Hoffmann Mineral: German producer of mineral fillers including Neuburg Siliceous Earth and related functional fillers, with overlap in construction additives and specialty building materials. Adjacent peer serving European construction formulators, though focused on fillers rather than lime binders.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

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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 La Chaux Saint-Astier®