Vestische Hartsteinwerke

What Vestische Hartsteinwerke does

Vestische Hartsteinwerke GmbH & Co. KG is a German Kommanditgesellschaft (limited partnership) headquartered in Haltern am See, North Rhine-Westphalia, that has operated as a pure holding company since 2006. It holds direct and indirect participations in a portfolio of companies in the Kalksandstein (sand-lime brick) and Kalk (lime) industries, including wholly-owned subsidiaries UNIKA Kalksandstein West GmbH & Co. KG, Baustoffwerke Münster-Osnabrück GmbH & Co. KG, Calcis Lienen GmbH & Co. KG, Calcis Warstein GmbH & Co. KG, and KSPE Kalksandstein-Planelemente GmbH & Co. KG. The group also holds a minority stake in the industry marketing company UNIKA GmbH and is a member of the Bundesverband Kalksandsteinindustrie e.V. The sole limited partner is the family-owned von Croff KG of Dülmen, indicating concentrated, non-institutional ownership.

The portfolio companies manufacture traditional Kalksandstein bricks, precision-cut Kalksandstein-Planelemente (plan elements), and industrial lime products at production sites in Haltern am See, Castrop-Rauxel, Osnabrück, Lienen, Wettringen, and Warstein. The core production technology relies on the established Kalksandstein process of pressing and autoclave hardening of lime-sand mixes, supplemented by precision cutting for plan elements. In 2025 the group consolidated its two Kalksandstein production sites and its sales entity into a single operating subsidiary, UNIKA Kalksandstein West GmbH & Co. KG.

The business model is B2B industrial manufacturing serving the German construction sector. The group sells through regional direct-sales offices (e.g., the Osnabrück sales office at Averdiekstraße 9) and industry marketing channels under the UNIKA brand. Pricing is not publicly disclosed and no revenue figures are available. The organization employs 251–500 staff across headquarters, production, and sales functions. There is no evidence of digital products, software platforms, APIs, or AI/ML capabilities — the business is fundamentally an industrial materials operation anchored by physical plant and 70+ years of accumulated production know-how.

Name

Vestische Hartsteinwerke

Legal name

Vestische Hartsteinwerke GmbH & Co. KG

Website

https://unika-vhw.de

Company type

Private

Founded year

1952

Operating status

Operating

Headcount range

251–500 employees

Short description

Vestische Hartsteinwerke GmbH & Co. KG is a family-owned German holding company that has operated since 2006 as a pure parent entity, holding participations in Kalksandstein (sand-lime brick) and lime producers in North Rhine-Westphalia serving the construction industry.

Ownership category

akta.pro rank

Product category

Building Materials

NAICS

Concrete Pipe, Brick, and Block Manufacturing (32733)

akta.pro primary industry

Cement Manufacturing (Portland, Blended & Specialty) (IMADAAAG)

Keywords

• Sand-lime brick manufacturing
• Lime products production
• Construction materials supply
• Calcium silicate bricks
• Building materials holding

Headquarters

HQ city

Am See

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Personnel, Infrastructure, Others

Distribution channels3 records

Marketing channels1 record

Core offering

Vestische Hartsteinwerke GmbH & Co. KG operates as a holding company with direct and indirect participations in sand-lime brick (Kalksandstein) and lime (Kalk) manufacturing companies in North Rhine-Westphalia. Its subsidiaries produce Kalksandstein bricks and plan elements, and lime products for construction and industrial applications. Since 2006 it has functioned as a pure holding company, with production and sales consolidated into UNIKA Kalksandstein West GmbH & Co. KG in 2025.

Product overview

Vestische Hartsteinwerke GmbH & Co. KG operates as a pure holding company (since 2006) with direct and indirect participations in sand-lime brick and lime manufacturing companies in North Rhine-Westphalia. The product portfolio comprises three main product lines: (1) Kalksandstein sand-lime brick products and plan elements, produced by UNIKA Kalksandstein West GmbH & Co. KG (which merged the Castrop-Rauxel and Haltern am See facilities with the sales entity in 2025) and Baustoffwerke Münster-Osnabrück GmbH & Co. KG; (2) precision-cut Kalksandstein-Planelemente plan elements manufactured by the KSPE subsidiary; and (3) lime products from Calcis Lienen and Calcis Warstein. The company also participates in the UNIKA GmbH marketing group and the Bundesverband Kalksandsteinindustrie e.V. industry association.

Differentiator

Problem solved

Functional benefit

Products and services

• Kalksandstein (Sand-Lime Brick) Products Traditional and plan-element Kalksandstein (sand-lime brick) products for construction applications, manufactured by subsidiaries UNIKA Kalksandstein West GmbH & Co. KG (formed in 2025 through merger of Castrop-Rauxel and Haltern am See facilities with the sales company) and Baustoffwerke Münster-Osnabrück GmbH & Co. KG (Osnabrück region). Targeted at the building and construction sector.
• Kalksandstein-Planelemente (Sand-Lime Brick Plan Elements) Precision-cut sand-lime brick plan elements (Kalksandstein-Planelemente / geschnittene Kalksandsteinprodukte) for specialized construction applications, manufactured at the Sythen site and through subsidiary KSPE Kalksandstein-Planelemente GmbH & Co. KG (acquired 2006). Targeted at the construction sector needing precision-machined building materials.
• Kalk (Lime Products)

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Six partnerships are on record, tiered core.

• UNIKA GmbHcoreGTM or Marketing PartnerVestische Hartsteinwerke is involved in the marketing company UNIKA GmbH, which handles marketing activities for the group of companies in the Kalksandstein industry.
• Bundesverband Kalksandsteinindustrie e.V.coreOthersVestische Hartsteinwerke is a member of the Federal Association of the Lime Sand Brick Industry (Bundesverband Kalksandsteinindustrie), representing the industry's interests and providing industry coordination.
• UNIKA Kalksandstein West GmbH & Co. KGcoreStrategic or Co-development PartnerFormed in 2025 through merger of Kalksandstein production sites in Castrop-Rauxel and Haltern am See with the sales company. Vestische Hartsteinwerke holds stakes in this subsidiary that specializes in lime sand brick products.
• Baustoffwerke Münster-Osnabrück GmbH & Co. KGcoreStrategic or Co-development PartnerSubsidiary of Vestische Hartsteinwerke operating lime sand brick production and sales, located in Osnabrück region.
• Calcis Lienen GmbH & Co. KGcoreStrategic or Co-development PartnerSubsidiary specializing in limestone production with facilities in Lienen and Wettringen.
• Calcis Warstein GmbH & Co. KGcoreStrategic or Co-development PartnerSubsidiary of the Calcis group specializing in limestone production with a facility in Warstein.

Scale indicators2 records

Recent moves9 records

Expansion highlights4 records

Broad incumbents

• Holcim Ltd: Global building materials giant with cement, aggregates, and lower-carbon construction solutions; serves the same end markets as VHW and increasingly competes in Kalksandstein-adjacent masonry and lime products in Europe.
• Buzzi Unicem S.p.A. Italian-listed cement group with significant German operations; broad incumbent in cement/lime with European footprint comparable to VHW's product categories.
• Heidelberg Materials AG: Major German-listed building materials group with cement, lime, aggregates, and concrete products globally; overlaps with VHW's Kalksandstein/lime activities as a much larger diversified incumbent.
• SCHWENK Zement KG: German family-owned cement and lime producer with nationwide operations; comparable as a domestic incumbent in cement and lime, with a similar family-ownership profile and shared exposure to German construction.

Direct peers

• Rodenberg GmbH & Co. KG: German Kalksandstein producer with multiple manufacturing sites; directly comparable in core Kalksandstein product category and German-market focus.
• Xella Group: German-headquartered international building-materials group owning the Silka Kalksandstein brand and Ytong aerated concrete; directly competes with Vestische Hartsteinwerke across Kalksandstein masonry products and has much broader geographic reach.
• Fels-Werke GmbH: German lime producer with quarrying and processing operations; directly comparable to VHW's Calcis subsidiaries on the lime manufacturing side and in limestone raw materials.
• Kalkwerke Otto Breidenbach GmbH & Co. KG: German medium-sized lime producer with quarrying and burning operations; directly comparable to VHW's Calcis subsidiaries on the lime side of the business.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries6 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 Vestische Hartsteinwerke