What Schramm Fensterbau does

Schramm Fensterbau, legally Schramm GmbH, is a privately held, family-operated window and door manufacturer and installer headquartered in Langenzenn, Bavaria, serving residential homeowners in the Nuremberg metropolitan region (Nürnberg, Fürth, Erlangen, and surrounding Franconian municipalities). Founded in 1990, the company operates two Langenzenn sites: an office, showroom, and administration facility at Mühlsteig 26, and an in-house manufacturing facility at Mühlsteig 55 where PVC and aluminium windows and doors are produced to custom dimensions. The full-service model spans on-site measurement and consultation, custom manufacturing, professional installation by employed technicians, and after-sales service and repair (including products not originally supplied by the company).

The product portfolio covers six window types (Kunststofffenster from REHAU profiles, Aluminiumfenster from Heroal profiles, plus Alu-Kunststoff, Alu-Holz, Holz, and Dachfenster variants), three entrance door lines (in-house Aluminium- and Kunststoff-Haustüren, plus the premium TREND-Haustüren wood sub-brand from partner TRENDTÜREN), interior and sliding doors, and an accessory ecosystem including Rollläden and Raffstoren (partner ROMA), Textilscreens, Fliegengitter, Einbruchschutz, and Zutrittslösungen (fingerprint scanners, smart locks, motorised systems). Digital sales tools include an online door configurator, interactive flipbook catalogs, a REHAU-powered Energiesparrechner, and a government Fördermittelrechner; marketing runs through city-specific SEO landing pages and organic social on Facebook and Instagram.

Commercially, Schramm Fensterbau operates a direct-to-consumer, quote-based pricing model with no published price lists and no third-party distribution. Customers engage through showroom visits (by appointment), online configurators, or direct contact forms, with geographic reach anchored in the Nuremberg metropolitan region. Reported headcount is 7 employees, indicating a lean regional operation. Key supplier relationships (REHAU, Heroal, TRENDTÜREN, ROMA) and GFF Fachverband industry membership provide the structural backbone for product breadth, but no external institutional investment, funding rounds, or disclosed revenue figures are present in the source material.

Name

Schramm Fensterbau

Legal name

Schramm GmbH

Website

https://schramm-fenster.de

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

1–10 employees

Short description

Schramm Fensterbau is a family-owned regional window and door manufacturer and installer in Langenzenn, Bavaria, serving residential homeowners in the Nuremberg metropolitan area with in-house PVC and aluminium production, own installation crews, and a full-service quote-based model.

Ownership category

akta.pro rank

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

Custom Window & Door Fabrication & Replacement (HSAPAJAI)

akta.pro secondary industries

Doors, Windows & Millwork Retail (Interior/Exterior Doors, Windows, Moulding) (CRAIAEAI), Window/Door Frame Repair & Rot Remediation (Wood/Composite) (HSAGAEAI), Exterior Doors (IMADAIAA), Screens, Storm Doors/Windows & Insect Protection Systems (IMADAIAK)

Keywords

• Custom window manufacturing
• Entrance door installation
• PVC window systems
• Aluminium window fabrication
• Sun protection installation

Headquarters

HQ city

Langenzenn

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Window Sales and Manufacturing: Sale of custom-manufactured windows including Kunststofffenster, Aluminiumfenster, Alu-Kunststoff-Fenster, Alu-Holz-Fenster, Holzfenster, and Dachfenster. Products manufactured in-house from PVC and aluminium profiles.
2. Door Sales and Manufacturing: Sale of entrance doors (Haustüren) in Aluminium, Kunststoff, and wood materials, including TREND-Haustüren premium wood doors. Also includes interior doors such as Hebeschiebetüren and Zimmertüren.
3. Installation and Montage Services: Professional installation of windows, doors, and sun protection products performed by company's own trained installation technicians. Includes on-site measurement (Aufmaß) and consultation.
4. Sun Protection and Accessories: Sale and installation of sun protection products including Rollläden, Raffstoren, Textilscreens, and Innenbeschattung, as well as Fliegengitter and Einbruchschutz products.
5. Service and Repair: Maintenance and repair services for windows and doors, including products not originally supplied by the company. Provides adjustment and repair services.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Schramm Fensterbau manufactures and installs custom-sized windows, entrance doors, sliding doors, and interior doors from PVC (REHAU profiles), aluminium (Heroal profiles), wood, and composite materials at its own production facility in Langenzenn, Bavaria. The company delivers a full-service workflow covering on-site measurement and consultation, in-house fabrication, professional installation by its own technicians, and after-sales service and repair for the Nuremberg, Fürth, and Erlangen metropolitan region. Complementary product lines include roller shutters, external venetian blinds, textile screens, insect screens, burglary protection hardware, and smart access solutions.

Product overview

Schramm Fensterbau is a regional window and door manufacturer based in Langenzenn near Nuremberg, Germany, operating as a family-owned business with over 30 years of experience. The company manufactures the majority of its window and door products in its own production facility (at Mühlsteig 55, Langenzenn) and offers a comprehensive full-service model encompassing consultation, on-site measurement, custom manufacturing, professional installation, and after-sales service and repair. The core product portfolio comprises six window types — Kunststofffenster (plastic/vinyl, based on REHAU systems), Aluminiumfenster (from Heroal), Alu-Kunststoff-Fenster, Alu-Holz-Fenster, Holzfenster (for heritage buildings), and Dachfenster — alongside three entrance door lines: Aluminiumhaustüren and Kunststoffhaustüren produced in-house, and the premium TREND-Haustüren sub-brand sourced from partner TRENDTÜREN featuring solid wood doors with proprietary TrendLack coating and DuoLine Vorsatzschale technology. Supplementary door products include Hebeschiebetüren, Parallelschiebetüren, and Zimmertüren. The accessories portfolio covers sun protection (Rollläden, Raffstoren, Textilscreens, Innenbeschattung from partner ROMA), Fliegengitter, Einbruchschutz, and Zutrittslösungen (fingerprint scanners, smart locks, motorised systems). The company also provides digital service tools including an online Haustürkonfigurator, Energiesparrechner, and Fördermittelrechner. Service offerings include Aufmaß & Beratung (on-site measurement and consultation), professional Montage, and a broad Service & Reparatur (maintenance and repair) programme covering products from all manufacturers.

Differentiator

Problem solved

Functional benefit

Products and services

• Kunststofffenster

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

Four partnerships are on record, tiered core, major and minor.

• REHAUcoreTechnology or IntegrationREHAU supplies PVC profile systems for Kunststofffenster (plastic/PVC windows). Schramm manufactures windows using REHAU PVC profiles in its own production facility, offering Kunststofffenster as a core product line.
• HeroalcoreTechnology or IntegrationHeroal provides aluminium profile systems for Aluminiumfenster. Schramm manufactures aluminium windows and doors using Heroal profiles, representing a key material segment alongside PVC.
• TRENDTÜRENmajorTechnology or IntegrationTRENDTÜREN supplies premium wood entrance doors. Schramm offers TREND-Haustüren as a premium product line featuring high-quality wood doors 'made in Germany', complementing its own aluminium and Kunststoff entrance door offerings.
• GFF FachverbandminorOthersGFF Fachverband (Glas Fenster Fassade trade association) is a trade organization in the window and facade sector. Schramm displays the GFF Fachverband logo indicating membership or affiliation with the industry association.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Finstral: South Tyrolean family-owned window/door manufacturer combining in-house extrusion, fabrication, and direct regional partner distribution for residential customers. Closest match to Schramm's integrated manufacturing-plus-installation model with multi-material (PVC, aluminium, wood) product range.
• Solarlux: German premium specialist in glass sliding/folding doors and winter gardens, selling through a regional partner/installer network. Comparable as a niche German manufacturer of premium residential opening solutions distributed via regional fenestration specialists like Schramm.

Broad incumbents

• Schüco: One of Germany's largest aluminium and PVC window/door systems manufacturers, serving both newbuild and renovation via a partner/installer network that overlaps with Schramm's model. Comparable as a major German fenestration brand competing for the same end customers through regional installers.
• Weru: Established German premium window and door manufacturer with a national dealer/installer network for residential renovation. Directly comparable product mix (PVC, aluminium, wood windows; entrance doors) and similar B2C go-to-market via certified regional partners.
• Bauhaus: Germany's largest DIY/home improvement retail chain, offering standard-sized and custom windows/doors with installation services. Represents the price-disrupting retail channel competing with regional Fensterbau firms for the same residential renovation customer in the Nuremberg metro.
• Internorm: Europe's largest family-owned window manufacturer (Austrian, with significant German footprint) selling through regional partner installers. Highly comparable vertically integrated approach, premium positioning, and focus on energy-efficient residential windows/doors.
• Hörmann: Germany's leading door brand (entrance, garage, industrial) with strong residential presence and a national dealer network. Comparable on the entrance-door side of Schramm's portfolio, where premium Hörmann doors compete directly with Schramm's TRENDTÜREN and aluminium entrance offerings.

Others

• REHAU (Windows division): Critical upstream supplier of PVC profile systems for Schramm's Kunststofffenster line; also operates its own window brands and dealer programmes in Germany. Relevant as both a supplier dependency and an indirect competitor whose own brand programmes can bypass regional manufacturers.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/schramm.fensterbau
• Instagraminstagram.com/schramm.fensterbau
• LinkedInlinkedin.com/company/schramm-fensterbau

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 Schramm Fensterbau