What Otto Lehmann does

Otto Lehmann GmbH is a privately held Bavarian family-owned manufacturer of specialty hardware for roofs, drainage systems, and metal surface finishing, supplemented by TÜV-certified rooftop solar mounting systems. Operated as a German GmbH with reported 101-250 employees and manufacturing in Germany and Austria, the company serves a primarily domestic German market plus Austrian extension through domestic-form product variants.

Its product portfolio is organized into three core lines — Lehmann Roof (snow protection systems, safety roof hooks, roof walkways, metal roof windows, accessories), Lehmann Surface (hot-dip galvanizing, powder coating, high-temperature processes for corrosion protection), and Solar mounting hardware (Aufdachmodulhalter, compatible with over 90 roof tile models). Differentiated engineering assets include the Click17 tool-free mounting system and TÜV-certified rooftop solar holders, backed by an in-house surface finishing operation that allows tightly controlled corrosion protection on proprietary hardware. Sales-led GTM is supported by a website-based product catalog (Lehmann Produktwelt), downloadable prospectuses and installation guides, and online planning tools (Schneelastrechner snow load calculator and Solarmodulrechner solar module calculator) that double as demand capture at specification stage.

The company makes money through one-time sales of physical building material products to professional tradespeople, contractors, architects, engineers, and building owners — predominantly SMB buyers in the German construction and roofing trades. Pricing is not publicly disclosed and is likely quote-based, varying by product type, quantity, and surface treatment specification. There is no recurring software or subscription component. Recent operational moves include standardizing warehouse operations across Neutraubling and Geiselhöring on Klinkhammer's KlinkWARE WMS in 2025-2026.

Name

Otto Lehmann

Legal name

Otto Lehmann GmbH

Website

https://otto-lehmann-gmbh.de

Company type

Private

Founded year

1851

Operating status

Operating

Headcount range

101–250 employees

Short description

Otto Lehmann GmbH is a Bavarian family-owned manufacturer of roofing accessories, drainage technology, and metal surface finishing, plus TÜV-certified rooftop solar mounting hardware, serving tradespeople, contractors, and architects primarily in Germany and Austria.

Ownership category

akta.pro rank

Product category

Roofing and Drainage Hardware Manufacturing

NAICS

Sheet Metal Work Manufacturing (332322), Ornamental and Architectural Metal Work Manufacturing (332323), Architectural and Structural Metals Manufacturing (3323)

SIC

Sheet Metal Work (3444), Asphalt Paving & Roofing Materials (2950)

akta.pro primary industry

Flashing, Edge Metal & Roof Accessories (IMADAFAJ)

akta.pro secondary industries

Metal Roofing Systems (IMADAFAB), Roofing Adhesives, Sealants & Leak Repair (IMADAOAF)

Keywords

• Roofing accessories
• Drainage hardware
• Solar mounting systems
• Metal surface finishing
• Hot-dip galvanizing

Headquarters

HQ city

Neutraubling

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Building Material Product Sales: Otto Lehmann generates revenue primarily from the one-time sale of physical building material products — roofing accessories, drainage systems, solar mounting hardware, and metal surface finishing treatments. Customers are predominantly tradespeople, contractors, and distributors purchasing hardware for construction projects. This is a straightforward B2B manufacturing revenue model with no recurring software component.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Otto Lehmann GmbH manufactures and sells physical hardware for the building envelope: roofing accessories (snow protection systems, safety roof hooks, roof walkways, metal roof windows), drainage technology (gutter hooks, downpipe clamps), and TÜV-certified rooftop solar PV mounting holders compatible with over 90 roof tile models. The company also operates contract metal surface finishing services — hot-dip galvanizing, powder coating, and high-temperature processes — to protect steel components from corrosion. All products are produced in Germany or Austria and are sold B2B to tradespeople, contractors, architects, engineers, and steel construction firms.

Product overview

Otto Lehmann GmbH is a Bavarian family-owned company and one of the leading manufacturers of high-quality roofing articles (Bedachung), drainage technology (Entwässerungstechnik), and refined metal surfaces (veredelte Metalloberflächen). The company operates three core product lines: Lehmann Roof covering snow protection systems, safety roof hooks, roof walkways, and metal roof windows; Lehmann Surface providing surface finishing services including hot-dip galvanizing, powder coating, and high-temperature processes; and Solar mounting solutions with TÜV-tested rooftop solar panel holders compatible with over 90 roof tile models. Products are manufactured in Germany or Austria. The portfolio includes specialized systems like the Click17 quick-mount system and digital planning tools including a snow load calculator and solar module calculator.

Differentiator

Problem solved

Functional benefit

Brands

• Lehmann Roof: Roofing product line including snow protection systems, safety roof hooks, roof walkways, metal roof windows and special accessories
• Lehmann Surface
• Lehmann Innovation
• Lehmann Produktwelt
• Click17

Products and services

• Lehmann Roof (Bedachung) Comprehensive roofing product line including snow protection systems (Schneeschutzsysteme), safety roof hooks (Sicherheitsdachhaken), roof walkways (Dachbegehung), metal roof windows (Metall-Dachfenster), and special accessories (Spezialzubehör). Designed for durability and practical use across a wide range of roof types; built on the company's 1851 manufacturing heritage in Germany/Austria.
• Lehmann Surface (Oberflächenveredelung) Contract metal surface finishing services including hot-dip galvanizing (Feuerverzinkung), powder coating (Pulverbeschichtung), and high-temperature processes (Hochtemperaturverfahren). Protects steel from corrosion and is delivered to precision standards for construction and steel component customers.
• Solar Mounting Systems (Aufdachmodulhalter) TÜV-tested rooftop solar PV mounting holders that enable the safe installation of photovoltaic systems without damaging existing roofs. Independently certified for safety and structural compliance. Compatible with over 90 different roof tile models, giving specifiers the broadest coverage in the category.
• Drainage Systems (Entwässerungssysteme) Precision-manufactured roof drainage solutions including gutter hooks (Rinnenhaken), downpipe clamps (Ablaufrohrschellen), and accessories. Available in multiple materials and engineered for permanently safe roof drainage.

Quantifiable outcome

• Products compatible with over 90 different roof tile models — providing broad market coverage for roofing professionals.
• +1 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• SL-Rasch GmbH: German specialist in snow guard and roof safety systems for pitched roofs, directly competing with Otto Lehmann's Schneeschutz and Sicherheitsdachhaken product lines across German-speaking markets.
• Schletter Group GmbH: International solar mounting hardware manufacturer with strong German roots. Directly competes with Otto Lehmann in TÜV-tested rooftop PV racking and offers broader portfolio across commercial and utility-scale installations.
• Sita Bauelemente GmbH: German manufacturer of roof drainage products for flat and pitched roofs. Compares to Otto Lehmann's Entwässerungstechnik line (Rinnenhaken, Ablaufrohrschellen) with both competing in the German trade channel.
• Klöber GmbH: German manufacturer of roofing accessories including ventilation, sealing, and fastening products. Adjacent peer to Otto Lehmann, sharing trade-channel customers and similar specification-driven sales model.
• Zambelli GmbH: German family-owned manufacturer of roofing accessories, drainage technology, and metal surface finishing. Closely comparable to Otto Lehmann in product mix (snow protection, gutter systems, surface treatment) and Mittelstand positioning.
• K2 Systems GmbH: Major German manufacturer of rooftop PV mounting systems serving European markets. Overlaps with Otto Lehmann in residential pitched-roof solar mounting; broader product depth and European footprint than Lehmann.
• FOS Komponenten GmbH: German manufacturer of solar mounting hardware and pitched-roof racking systems. Direct competitor to Otto Lehmann's TÜV-certified Aufdachmodulhalter product family.
• Rheinzink GmbH: German manufacturer of architectural zinc products including roofing, façade, and drainage systems. Comparable to Otto Lehmann in metal surface finishing and pitched-roof application, with overlap in gutter and roof drainage.

Broad incumbents

• Wienerberger AG: Leading European manufacturer of clay roof tiles and building envelope solutions. Indirect competitor that channels demand to roofing accessory suppliers including Otto Lehmann across DACH markets.
• BMI Group (Braas): Pan-European roofing systems incumbent (including Braas brand) covering tiles, membranes, and accessories. Establishes specifications downstream that consume Otto Lehmann's accessory hardware through the same installer network.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/OttoLehmannGmbH
• LinkedInlinkedin.com/company/otto-lehmann-gmbh

Revenue estimate

Valuation estimate

Number of profiles

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 Otto Lehmann