Rosendahl GmbH

What Rosendahl GmbH does

Rosendahl GmbH is a German master craftsman roofing and facade business (Meisterbetrieb) headquartered in Kehl-Sundheim, Baden-Württemberg, founded in 1985 and serving the Ortenau region (Kehl, Lahr, Offenburg) and surrounding areas. The company provides a unified portfolio of building envelope services organized around three core areas: roofing (Steildach, Flachdach, Gründach), facade work (Fassadenverkleidung, Wärmedämmung), and sheet metal work (Blecharbeiten), supplemented by roof windows, dormers, repairs, and recurring maintenance. It operates as a traditional skilled-trade contractor with a team of 16, including a master roofer, journeymen, a metalwork specialist, apprentices, and skilled assistants, executing work using modern insulation and metal materials rather than proprietary technology.

The company serves three principal customer segments: residential property owners (primary), commercial and industrial clients, and public/government institutions, with named reference projects across schools, kindergartens, municipal buildings, banks, and retail. Revenue is generated primarily through project-based one-time engagement contracts (roofing, facade, metalwork), with a modest recurring stream from maintenance subscriptions. Pricing is quote-based and not publicly disclosed. Customer acquisition is driven by direct-to-consumer service delivery, local word-of-mouth referrals, a website with a reference-project gallery, organic social media presence (Facebook, Instagram), and the credibility provided by trade association membership in the Dachdecker-Innung Freiburg and the Landesinnungsverband des Dachdeckerhandwerks Baden-Württemberg.

Rosendahl GmbH is a privately held, family-run SME (Mittelstand) with no external institutional investors, no subsidiaries, and no patents or proprietary technology. Day-to-day management is led by Dachdeckermeister Mirko Lauckner and Prokuristin Barbara Rosendahl. The business carries no AI, software, or digital-platform components; competitive positioning derives from craft certification, regional presence, and long-standing reputation rather than technology differentiation.

Name

Rosendahl GmbH

Legal name

Rosendahl GmbH

Website

https://rosendahl-dach.de

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

11–50 employees

Short description

Rosendahl GmbH is a German master craftsman roofing and facade business founded in 1985, serving residential, commercial, and public-sector clients in the Ortenau region with roofing, facade, sheet metal, and maintenance services delivered by a 16-person team.

Ownership category

akta.pro rank

Headquarters

HQ city

Kehl-Sundheim

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Roofing Services: Project-based revenue from steep roofs (Steildächer), flat roofs (Flachdächer), and green roofs (Gründächer) including new construction and renovation.
2. Metal Working Services: Revenue from gutter systems, chimney flashing, parapet cladding, and sheet metal roofing installations using copper, zinc, and aluminum.
3. Facade Services: Revenue from facade cladding with plastic, wood, metal, or slate materials, and thermal insulation systems.
4. Maintenance Services: Ongoing maintenance contracts including roof inspections, gutter cleaning, sealing checks, and skylight maintenance.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Rosendahl GmbH is a master craftsman roofing and facade contractor (Meisterbetrieb) providing a complete range of building envelope services for residential, commercial, and public-sector buildings. Core services cover pitched roofs, flat roofs, green roofs, facade cladding, thermal insulation, sheet metal work (gutters, chimney flashing, parapet cladding, metal roofing), roof windows and dormers, plus ongoing maintenance and repair, all delivered by an in-house team of certified roofers and metal workers across the Ortenau region.

Product overview

Rosendahl GmbH is a traditional roofing and facade craft business (Dachdeckerhandwerk) offering comprehensive building envelope services. The company provides a unified portfolio of construction and craft services organized around three core areas: roofing (Dach) including pitched roofs, flat roofs, and green roofs; facade work (Fassade) including thermal insulation and facade cladding; and sheet metal work (Blecharbeiten) for precise metal fabrication. Additional service offerings include roof windows, maintenance, repairs, and roof dormers. As a master craft business (Meisterbetrieb) established in 1985, the company operates as a service-based provider rather than a software product company, with services delivered through skilled craftspeople and technicians.

Differentiator

Problem solved

Functional benefit

Products and services

• Pitched Roof Services (Steildach) Installation and services for traditional pitched roofs offering weather resistance, attic utilization, and various roofing materials including tiles, slate, and metal. Target customers are residential property owners, commercial/industrial clients, and public institutions in the Ortenau region.
• Flat Roof Services (Flachdach) Modern flat roof solutions for terraces, green roofs, and solar installations with high-quality waterproofing using bitumen membranes or plastic sheets, delivered for residential, commercial, and public-sector buildings.
• Green Roof Services (Gründach) Ecological green roof solutions that create additional living space, improve building value, and provide environmental benefits including moisture regulation and UV protection, for residential and commercial buildings.
• Facade Cladding (Fassadenverkleidung) Building facade cladding services offering protection from weather, improved energy efficiency, and aesthetic enhancement using various materials including plastic, wood, metal, and slate, for residential, commercial, and public-sector buildings.
• Thermal Insulation (Wärmedämmung) Professional thermal insulation services using mineral wool, PU foam, or natural insulation materials to reduce heating costs and improve building energy efficiency, for residential, commercial, and public buildings.
• Sheet Metal Work (Blecharbeiten) Precision sheet metal work including gutters, chimney flashing, parapet cladding, and metal roofing using copper, zinc, or aluminum for optimal drainage and weather protection, delivered across residential, commercial, and public-sector projects.
• Roof Windows (Dachfenster) Installation of roof windows including pivot windows, top-hung windows, and balcony solutions providing natural light, ventilation, and thermal insulation, for residential and commercial properties.
• Roof Dormers (Dachgauben) Custom roof dormer solutions including saddle dormers, shed dormers, hip dormers, and modern flat roof dormers for additional living space and natural light, primarily for residential properties.
• Roof Covering (Dachdeckung) Professional roof covering services using tiles, slate, metal, or modern roof membranes providing stability, weather resistance, and aesthetic appearance, for residential, commercial, and public buildings.
• Maintenance Services (Wartung) Regular roof maintenance including inspections, gutter cleaning, sealing checks, and window/servicing to ensure longevity and prevent costly repairs, offered as ongoing contracts for residential, commercial, and public-sector customers.
• Repair Services (Reparaturen) Professional roof repair services for leaks, damaged tiles, sealing issues, and faulty gutters to restore roof functionality and prevent further damage, for residential, commercial, and public-sector properties.

Named customers6 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered minor and core.

• Landesinnungsverband des Dachdeckerhandwerks Baden-WürttembergminorOthersTrade association membership providing industry credibility and adherence to professional standards in the German roofing trade.
• Dachdecker-Innung FreiburgcoreOthersMember of the local roofing trade guild in Freiburg, providing certification standards, professional training support, and industry networking. The company operates as a Meisterbetrieb (master craftsman business) through this membership.

Scale indicators2 records

Recent moves4 records

Expansion highlights2 records

Others

• VELUX Group: World-leading manufacturer of roof windows and skylights. Comparable as both a supplier and a category-setter for roof windows, a product Rosendahl explicitly installs and services. VELUX-certified installers are a recognized quality signal in the German market.
• Saint-Gobain: French multinational building materials group with strong German presence in insulation, roofing membranes, and facade systems. Comparable as a supplier-partner for German roofers and as a broader building-envelope competitor via its integrated solutions.
• ROCKWOOL International: Global manufacturer of mineral wool insulation used in roofing and facade applications. Comparable as a key material supplier for Rosendahl's thermal insulation (Wärmedämmung) services and as a stakeholder in the German energy-retrofit value chain.
• BMI Group (Braas/Icopal): Leading European roofing materials manufacturer (including the Braas brand, dominant in German pitched-roof tiles). Comparable because Rosendahl uses BMI-supplied materials such as tiles, membranes, and waterproofing systems; BMI is a key supplier-partner for any German Dachdecker.
• Wienerberger AG: Leading European producer of clay roof tiles and building envelopes, with a major German footprint. Comparable as a key tile supplier for German roofers and as a vertically integrated competitor in roof-systems provision.

Emerging players

• Enpal GmbH: Berlin-based solar leasing company rapidly scaling rooftop solar and energy retrofit services in Germany. Comparable in addressing the same end customer (residential and commercial building owners) for rooftop energy solutions, and represents a new competitive vector for traditional roofers as solar and roofing converge.

Broad incumbents

• Zech Group SE: German family-owned construction group with significant building-envelope and roofing operations. Comparable to Rosendahl's family-owned Mittelstand roots but at substantially larger scale, with regional construction subsidiaries across Germany.
• Hochtief AG: One of Germany's largest construction groups with significant building-envelope and roofing capabilities. Comparable in offering roofing and facade construction but with vastly greater resources, geographic reach, and ability to handle large-scale public projects.
• Goldbeck GmbH: Large German construction company specializing in commercial and industrial building envelopes, including roofing and facade systems. Shares Rosendahl's building-envelope focus but operates at a much larger scale with systemized industrial construction methods.
• Köster GmbH: Major German general contractor with a dedicated roofing and building-envelope division. Comparable to Rosendahl in offering comprehensive roofing services, but at significantly larger scale and broader geographic reach across Germany.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/rosendahl-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Rosendahl GmbH