Bildau & Bussmann

What Bildau & Bussmann does

Bildau & Bussmann GmbH is a privately-held German manufacturer specializing in custom-made wood and wood-aluminum windows and doors, headquartered at Gerichtstrasse 23 in Berlin and led by Managing Director Martin Bildau. The company operates its own production facility, fabricating made-to-order products in multiple wood species (pine, spruce, oak, larch, teak) with aluminum or wooden weather protection, multi-chamber insulated glass units, safety glass, patterned glass, and glazing bar configurations. Its profile portfolio spans pure-wood systems (with aluminum weather bar, with wooden drip sill, and historic restoration profiles) and seven wood-aluminum variants under the Linea family (Classic, Quadrata, Plana, Integra, Antica, Passiva, and Bronze System), with hardware integration from ROTO (Roto NT, Roto Patio, Roto Patio Fold) and Gretsch-Unitas (GU lift-slide, GU Secury, GU Unitas) supporting tilt-turn, sliding, lift-slide, tilt-slide, bi-fold, and pivot configurations including hurricane-tested assemblies.

The company sells exclusively through a direct project-based model — quote requests via downloadable forms, sample distribution of demonstration corners and stain finishes, and a Customer Service Portal (csp.bildau.de) for existing accounts — with no e-commerce, distribution, or reseller channel. Customer segments include architects, specifiers, and construction companies; premium residential homeowners and private builders; and institutional/heritage projects. Reference projects include the Humboldtforum Berlin reconstruction, the Mac Donald warehouses reconversion in France (2,700+ wood-aluminum frames delivered in 2014 for VINCI Group subsidiaries GTM and SICRA), and the 5 Morgen Truman Plaza Berlin residential development. International reach is delivered through wholly-owned subsidiaries in France (Bildau & Bussmann France S.A.R.L., Ruy Montceau), the United States (Bildau & Bussmann North America Inc., Newark, Delaware), and Poland (Bildau & Bussmann Sp. z o.o.), supported by a multilingual website in English, German, French, and Polish.

Name

Bildau & Bussmann

Legal name

Bildau & Bussmann GmbH

Website

https://bildau.de

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Bildau & Bussmann is a privately-held German manufacturer of custom wood and wood-aluminum windows and doors, serving architects, construction firms, premium residential clients, and heritage projects across Europe and North America through wholly-owned subsidiaries in France, the US, and Poland.

Ownership category

akta.pro rank

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Windows and Doors: Project-based custom manufacturing of wood and wood-aluminum windows and doors. Products are made to order based on architectural specifications, with individual project pricing. Revenue is generated through one-time project sales rather than standardized product lines.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Bildau & Bussmann manufactures custom wood and wood-aluminum windows and doors to architectural specifications, producing items such as tilt-turn windows, fixed glazing, sliding and bi-fold doors, and lift-slide door systems. The company operates its own production facility in Germany and offers a portfolio of seven wood-aluminum profile lines plus pure wood profiles for contemporary, passive house, and historic restoration applications. Products are sold direct via project quote, with wholly-owned subsidiaries in the United States, France, and Poland supporting international markets.

Product overview

Bildau & Bussmann is a European manufacturer of custom wooden and wood-aluminum windows and doors. The product portfolio centers on two main window profile lines: wooden windows (including Wood with Aluminum Weather Bar, Wood with Wooden Drip Sill, and Historic Windows profiles) and wood-aluminum windows (offering seven Linea system variants: Classic, Quadrata, Plana, Integra, Antica, Passiva, and Bronze). The product range spans both window types (Fixed Glazing, Tilt-Turn, Sliding Windows, Special Designs) and door types (Entry Doors, Balcony Doors, Lift-Slide Doors, Tilt-Slide Doors, and Bi-Fold Doors). Supporting technology components include insulated glass units, safety glass, glazing bars, patterned glass, handle hardware (from Roto and GU/Gretsch-Unitas), and insect screens. Finishing options encompass wood finishes (paints, lasures) and aluminum finishes (powder coating). The company operates production facilities in Germany and serves markets across Europe and North America through subsidiaries in France and Poland.

Differentiator

Problem solved

Functional benefit

Brands

• Linea Classic: Classic wood-aluminum window profile with sloped design, indistinguishable from standard wood windows, suitable for traditional aesthetics with low-maintenance aluminum exterior.
• Linea Quadrata
• Linea Plana
• Linea Integra
• Linea Antica
• Linea Passiva
• Bronze System

Products and services

• Tilt-Turn Windows Dual-function wood and wood-aluminum windows that tilt open from the top for ventilation or swing open from the side for full access and egress; produced custom to architectural specifications for residential and commercial projects.
• Fixed Glazing Non-operable custom window systems providing permanent architectural glazing for maximum light entry and thermal performance.
• Sliding Windows Horizontally sliding wood and wood-aluminum window systems designed for smooth operation and space efficiency in various architectural applications.
• Special Design Windows Custom-shaped and configured wood and wood-aluminum windows tailored to specific architectural requirements beyond standard configurations.
• Entry Doors Custom exterior entry doors providing secure access to residential and commercial buildings, with various wood-aluminum and wood material and design options including GU Secury multi-point locking hardware.
• Balcony Doors Custom door systems designed for balcony access combining weather resistance with ease of operation and aesthetic appeal.
• Lift-Slide Doors Large-format custom sliding door systems with lifting mechanism for smooth operation of heavy panels, ideal for creating seamless indoor-outdoor transitions; uses GU lift-slide hardware.
• Tilt-Slide Doors Custom tilt-slide door systems where panels first tilt inward before sliding, providing ventilation options with space-efficient operation.
• Bi-Fold Doors Accordion-style custom folding doors using Roto Patio Fold hardware that completely fold away to maximize opening width, offering the clearest interface between interior and exterior spaces.

Quantifiable outcome

• Over 2,700 wood-aluminum frames delivered and installed on the largest residential construction project in France in 2014 (Mac Donald warehouses reconversion)

Named customers4 records

Segments3 records

Ideal customer profiles3 records

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 major.

• ROTO (Roto Frank AG)coreTechnology or IntegrationROTO provides window and door hardware systems for Bildau & Bussmann products, including Roto NT for tilt-turn systems, Roto Patio for parallel sliding and tilt windows, and Roto Patio Fold for bi-fold sliding systems. ROTO's hardware enables multi-point locking, 3D adjustment capabilities, and hurricane-tested configurations used in Bildau's projects.
• Gretsch-Unitas (GU)coreTechnology or IntegrationGretsch-Unitas (GU) supplies hardware for lift-slide doors (GU lift-slide systems), entry door security systems (GU Secury), and pivot window systems (GU Unitas / Swingwindows). GU hardware is featured in installation and maintenance instruction materials distributed by Bildau & Bussmann.
• VINCI Construction (via GTM and SICRA subsidiaries)majorImplementation/ SI/ Consulting PartnerIn 2014, Bildau & Bussmann France served as the window and door subcontractor on the Mac Donald warehouses reconversion project — France's largest residential construction project at the time. GTM and SICRA, both subsidiaries of VINCI Group, were the main contractors. Over 2,700 wood-aluminum frames were delivered and installed.

Scale indicators1 record

Recent moves6 records

Expansion highlights3 records

Direct peers

• Unilux: German manufacturer of premium wood and wood-aluminum windows and doors. Direct competitor in the German and broader European premium custom window segment with comparable customization capabilities.
• Weru Group: German window and door manufacturer with wood and wood-aluminum offerings targeting residential and light commercial markets. Comparable to Bildau & Bussmann in product category and DACH market focus, with broader distribution scale.
• Gaulhofer: Austrian premium window and door manufacturer specializing in wood and wood-aluminum systems. Competes head-to-head with Bildau & Bussmann for premium residential and architectural projects across Europe.
• Kneer-Südfenster: German premium manufacturer of wood and wood-aluminum windows for the architect and developer channel. Highly comparable in product mix, customization approach, and specification-driven sales model.
• Internorm: Austrian manufacturer of premium wood, wood-aluminum, and uPVC windows and doors. Directly competes with Bildau & Bussmann in the European custom and premium fenestration segment, serving architects and developers with similar product breadth and certified energy-efficient lines.
• Josko: Austrian custom manufacturer of wood and wood-aluminum windows and entry doors. Highly comparable to Bildau & Bussmann in terms of project-based custom production, premium positioning, and architectural specification focus in the DACH region.

Broad incumbents

• Pella Corporation: Large US window and door manufacturer offering wood, wood-clad, and fiberglass lines. Overlaps with Bildau & Bussmann in premium and custom window segments, with significantly broader scale and distribution.
• Velux Group: Danish global leader in roof windows and skylights. Adjacent incumbent in the broader premium fenestration market; comparable as a European-headquartered premium window brand with international reach.
• Marvin Windows and Doors: US premium manufacturer of custom wood and wood-aluminum windows and doors. Comparable in made-to-order customization model and architect/specifier channel; serves as a North American benchmark for the same positioning Bildau & Bussmann pursues via its US subsidiary.
• Andersen Corporation: Large US-based manufacturer of premium wood, wood-clad, and composite windows and doors. Comparable in premium custom positioning and architectural specification focus, particularly relevant given Bildau & Bussmann's US subsidiary.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/bildau-bussmann-gmbh
• Xx.com/bildau

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Bildau & Bussmann