Wertbau

Window and Door Manufacturingwertbau.de

Wertbau GmbH is a German manufacturer of customized wooden, plastic, and aluminium windows and doors for the European construction and renovation market, operating a 32,000 m2 facility in Langenwetzendorf, Thüringen, as a subsidiary of the Danish DOVISTA group.

Company typePrivate
Founded1990
HeadquartersLangenwetzendorf, Germany
Headcount251–500
GTM typeB2B
OfferingHardware or Manufacturing

What Wertbau does

Wertbau GmbH is a German manufacturer of customized windows and doors, operating exclusively from a 32,000 m2 single-site production facility in Langenwetzendorf, Thüringen. Founded in 1990 and now a wholly-owned subsidiary of the Danish DOVISTA group, the company produces fenestration products in wood, plastic, and aluminum, with a stated focus on balcony and terrace applications as well as broader residential and commercial openings. Its go-to-market is sales-led B2B, distributing customized, certified products directly to construction companies, builders, and renovation contractors across the European market. All output is tested and certified by independent institutes to comply with strict European and German standards.

The business model is straightforward hardware sales of finished fenestration units, with customization serving as the central value proposition. Pricing is not publicly disclosed and appears to be negotiated on a project basis. The company employs over 400 staff at its Langenwetzendorf facility and is led by managing directors Dr. Frank Fleissner and Adnan Cuk. Digital presence is modest — limited to a corporate website (wertbau.de), YouTube, and Facebook — and there is no evidence of an app, API, or e-commerce channel. Marketing channels are primarily top-of-funnel brand awareness rather than lead generation.

Wertbau holds no external funding events and operates as a privately-held GmbH under DOVISTA's strategic direction. Its competitive positioning rests on group-backed quality standards, regulatory certification, manufacturing scale, and the customized nature of its product offering rather than on technology differentiation. There are no disclosed AI/ML capabilities, proprietary software platforms, patents, or third-party technology partnerships in the supplied material, indicating a traditional industrial manufacturer profile within a strategically supportive European fenestration group.

Wertbau firmographics

Firmographics

Name: Wertbau
Legal name: WERTBAU GmbH
Website: https://wertbau.de
Company type: Private
Founded year: 1990
Operating status: Operating
Headcount range: 251–500 employees
Short description: Wertbau GmbH is a German manufacturer of customized wooden, plastic, and aluminium windows and doors for the European construction and renovation market, operating a 32,000 m2 facility in Langenwetzendorf, Thüringen, as a subsidiary of the Danish DOVISTA group.
Ownership category
akta.pro rank

Wertbau industry classification

Industry

Product category: Window and Door Manufacturing
NAICS: Metal Window and Door Manufacturing (332321), Wood Window and Door Manufacturing (321911)
SIC: Metal Doors, Sash, Frames, Moldings & Trim (3442), Millwood, Veneer, Plywood, & Structural Wood Members (2430)
akta.pro primary industry: Louvers, Vents & Architectural Grilles (IMADAIAM)

Keywords

Window manufacturing
Door manufacturing
Fenestration products
Aluminium windows
Construction materials

Where Wertbau is headquartered

Location

Headquarters

HQ city: Langenwetzendorf
HQ country: Germany
HQ region: Europe

Offices1 record

Markets served

Wertbau business model

Business model

GTM type: B2B
Offering type: Hardware or Manufacturing
Cost components: Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

Windows and Doors Manufacturing: WERTBAU manufactures customized windows and doors for the European market. As a manufacturer within the DOVISTA group, the company generates revenue through the sale of its fenestration products to construction companies, builders, and renovation projects across Europe.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Wertbau product offering

Product offering

Core offering

Wertbau manufactures customized wooden, plastic, and aluminium windows and doors for balconies, terraces, residential, and commercial buildings at its Langenwetzendorf facility in Thüringen, Germany. The company sells these fenestration products B2B to construction firms, builders, and renovation contractors across the European market. Products are characterized by longevity, functionality, and stability, and comply with strict European and German standards with independent third-party certification.

Product overview

Wertbau is a window and door manufacturer producing customized Fensters (windows) and Türen (doors) exclusively in Langenwetzendorf, Thüringen, Germany. As part of the Danish DOVISTA group, the company operates with over 400 employees on a 32,000 m2 production facility, offering products characterized by longevity, functionality, and stability that comply with strict European and German standards and are certified by independent institutes.

Differentiator

Problem solved

Functional benefit

Products and services

Wertbau Windows and Doors (Fenster und Türen)

Companies that use Wertbau

Customer profile

Segments1 record

Ideal customer profiles1 record

Wertbau technology and API

Technology

Technology focussed No

API detail

Has API: No
API docs
API detail

Core technology

AI maturity

App detail

Feature1 record

Wertbau partnerships and signals

Strategic signal

Partnerships

One partnership is on record.

DOVISTAflagshipStrategic or Co-development PartnerWERTBAU is a part of the Danish DOVISTA group, which sets standards in quality, modernity and sustainability. As a subsidiary, WERTBAU benefits from the group's resources, brand recognition, and strategic direction while maintaining its production operations in Thüringen, Germany.

Scale indicators3 records

Recent moves4 records

Expansion highlights4 records

Wertbau competitors and assessment

Company assessment

Direct peers

Schüco: German-based manufacturer of aluminium and PVC window, door, and façade systems serving European construction and renovation. Comparable to Wertbau in fenestration manufacturing, European B2B channels, and emphasis on certified, energy-efficient systems.
Aluplast: German PVC window and door systems manufacturer with strong European footprint. Comparable to Wertbau as a competing European fenestration brand selling profiles and finished windows to fabricators, dealers, and developers.
Veka: German PVC profile manufacturer producing window and door systems for the European market. Comparable to Wertbau as a B2B fenestration supplier serving construction and renovation with certified, standardized product systems.
Profine: German PVC window and door systems group (KBE, KÖMMERLING, Trocal brands). Comparable to Wertbau in serving European construction/renovation with certified, energy-efficient fenestration products through a B2B model.
Aluk: Italian/UK aluminium window, door, and curtain wall systems manufacturer serving European commercial and residential markets. Comparable to Wertbau's aluminium fenestration offering and European B2B/specifier channel.
Salamander Industrie-Produkte: German manufacturer of PVC window and door systems sold across Europe. Comparable to Wertbau as a competing European fenestration manufacturer serving construction and renovation projects with certified products.
Reynaers Aluminium: Belgian aluminium window, door, and façade systems manufacturer for European construction. Directly comparable to Wertbau's aluminium windows/doors capability and European B2B/specifier distribution.
REHAU Windows: German polymer and window systems producer supplying PVC window and door solutions across Europe. Comparable to Wertbau as a European fenestration manufacturer with deep B2B/specifier relationships and a focus on energy-efficient, certified products.
Internorm: Austrian manufacturer of customized windows and doors in wood, PVC, and aluminium for the European market. Highly comparable to Wertbau in product mix (multi-material fenestration), customization model, and European B2B/specifier distribution.

Broad incumbents

Velux: Global roof window and skylight leader owned by VKR Holding (the same parent ecosystem as DOVISTA). Comparable as a broader incumbent in European fenestration with overlapping distribution and sustainability positioning, though specializing in roof windows rather than full window/door systems.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Wertbau compliance and trust

Trust signal

Compliance1 record

Wertbau financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Wertbau leadership team

Management profile

Number of profiles

Profiles2 records

Wertbau funding detail

Funding detail

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

Wertbau M&A and investment

M&A and investment

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Wertbau

What does Wertbau do?

Is Wertbau a public or private company?

Wertbau is a private company. It is classified as corporate owned and is currently operating.

When was Wertbau founded?

Wertbau was founded in 1990. It employs 251 to 500 people.

Where is Wertbau based?

Wertbau is headquartered in Langenwetzendorf, Germany, in the Europe region.

How does Wertbau make money?

One revenue line is on record: windows and Doors Manufacturing.

Who are Wertbau's main competitors?

Direct peers on record are Schüco, Aluplast, Veka, Profine, Aluk, Salamander Industrie-Produkte, Reynaers Aluminium, REHAU Windows and Internorm. Velux is listed as a broad incumbent.

Does Wertbau have an API?

No public API is recorded for Wertbau.

What industry is Wertbau in?

Wertbau's product category is Window and Door Manufacturing. Its primary akta.pro industry code is IMADAIAM, Louvers, Vents & Architectural Grilles. Its NAICS code is 332321 and its SIC code is 3442.