What Internorm International GmbH does

Internorm International GmbH is an Austrian, family-influenced premium fenestration manufacturer headquartered in Traun, Upper Austria, producing 100% of its windows and doors domestically. The company sells high-performance triple-glazed windows (uPVC, uPVC-aluminium composite, and timber-aluminium), aluminium and timber-aluminium entrance doors, lift-sliding doors, patio doors, and complementary shading and insect-protection accessories. Its I-tec Innovations platform layers in solar-powered I-tec Shading, integrated blinds, and Smart Home integration on top of the core envelope products, and the firm claims one of the most comprehensive Passivhaus-certified and Passivhaus-suitable product ranges in Europe.

The group has over 85 years of manufacturing heritage, is privately held as an Austrian GmbH, and operates through an exclusive authorised Distribution Partner model rather than direct sales. Distribution Partners provide showroom consultation, specification, survey, installation, and aftercare, with showrooms located throughout the UK and Ireland and additional export activity across 25+ country-specific websites spanning Western, Central, and Eastern Europe, North America (US, Canada), and Oceania (Australia). Revenue is generated primarily through quote-based hardware sales of window and door systems to homeowners and architects/specifiers, with marketing concentrated on premium self-build, renovation, extension, and Passivhaus projects.

Operationally, the UK-facing entity captured in firmographics appears to be a local sales and partner-management organisation of approximately 22 employees, materially smaller than the group's full Austrian manufacturing and corporate footprint. The company supports customers through a multi-channel mix including a comprehensive website with Door Designer interactive tool, social media presence, downloadable brochures, exhibition participation, and a postcode-based Distribution Partner locator. No funding rounds, M&A, restructuring events, or revenue figures are disclosed in the available source material.

Name

Internorm International GmbH

Legal name

Internorm International GmbH

Website

https://internorm.co.uk

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Internorm International GmbH is an Austrian manufacturer of premium triple-glazed windows and doors sold exclusively through authorised Distribution Partners to homeowners, architects, and self-build clients across the UK, Ireland, and 25+ international markets.

Ownership category

akta.pro rank

Product category

Windows and Doors (Fenestration)

NAICS

Metal Window and Door Manufacturing (332321), Wood Window and Door Manufacturing (321911), Blind and Shade Manufacturing (33792)

SIC

Metal Doors, Sash, Frames, Moldings & Trim (3442)

akta.pro primary industry

Windows (IMADAIAC)

akta.pro secondary industries

Exterior Doors (IMADAIAA), Screens, Storm Doors/Windows & Insect Protection Systems (IMADAIAK)

Keywords

• Triple-glazed windows
• Entrance doors
• Lift-sliding doors
• Passivhaus windows
• Fenestration products

Headquarters

HQ city

Not specified

HQ country

Austria

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Window and Door Product Sales: Revenue generated from the sale of high-performance triple-glazed windows, entrance doors, lift-sliding doors, patio doors, and related products through a network of authorized Distribution Partners

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Internorm manufactures and supplies premium high-performance triple-glazed windows and entrance doors in uPVC, uPVC-aluminium composite, and timber-aluminium constructions, alongside lift-sliding doors, patio doors, integrated blinds, sun protection, and insect screens. Products are 100% made in Austria and distributed exclusively through authorized Distribution Partners across the UK, Ireland, and other export markets, supported by proprietary I-tec technologies and Passivhaus-certified systems.

Product overview

Internorm is Europe\'s leading manufacturer of premium, high-performance triple-glazed windows and doors. The company offers a comprehensive portfolio of fenestration products across three main window material categories: uPVC windows, uPVC-aluminium composite windows, and timber-aluminium windows. Entrance door offerings include aluminium and timber-aluminium options. Additional products include lift-sliding doors, patio doors, integrated blinds, sun protection systems (including I-tec Shading with Smart Home integration), and insect protection screens. The I-tec Innovations platform encompasses the company\'s proprietary intelligent technologies. Products are supplied exclusively through authorized Distribution Partners across the UK and Ireland, with comprehensive support from showroom consultation through installation and aftercare.

Differentiator

Problem solved

Functional benefit

Brands

• I-tec: Revolutionary Internorm technologies - pioneering I-tec technologies designed to deliver exceptional levels of comfort, security and performance, combining intelligent features with outstanding energy efficiency

Products and services

• uPVC Windows High-performance triple-glazed uPVC windows offering exceptional thermal efficiency, acoustic insulation, and security for residential applications.
• uPVC-Aluminium Windows Composite uPVC-aluminium windows combining the thermal efficiency of uPVC with the durability and aesthetic flexibility of aluminium cladding.
• Timber-Aluminium Windows Premium timber-aluminium windows featuring sustainably sourced wood interiors with aluminium exterior cladding, offering superior thermal performance and natural aesthetics.
• Windows with Integrated Blinds Windows featuring built-in blind systems between glass panes, providing shade, privacy, and light control without external clutter.
• Aluminium Entrance Doors Premium aluminium entrance doors offering contemporary design, exceptional thermal insulation, advanced security, and long-lasting durability.
• Timber-Aluminium Entrance Doors Bespoke timber-aluminium entrance doors combining natural wood interiors with aluminium exteriors for warmth, security, and energy efficiency.
• Lift-Sliding Doors Large-format sliding doors with lift mechanism for smooth operation, providing seamless access and panoramic views.
• Patio Doors Energy-efficient patio doors designed for comfortable access to outdoor spaces with triple-glazed options.
• Sun Protection External Venetian blinds and integrated shading solutions designed to minimise overheating, reduce solar heat gain, and enhance privacy while maximising natural daylight.
• Insect Protection Integrated insect screening solutions for windows and doors to provide protection while maintaining ventilation.
• I-tec Innovations Internorm's suite of pioneering technologies including I-tec Shading, Smart Home integration, and other intelligent features for enhanced comfort, security, and performance in window and door systems.

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature4 records

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Schüco International KG: Schüco is a leading German manufacturer of high-end aluminium and uPVC window, door, and façade systems for residential and commercial buildings. Like Internorm, it serves architects, specifiers, and premium homeowners with energy-efficient, design-led fenestration products.
• Cortizo: Cortizo is a Spanish manufacturer of aluminium and PVC window and door systems serving residential and commercial markets across Europe. It overlaps with Internorm in premium aluminium entrance doors and lift-sliding doors for residential projects.
• Aluplast GmbH: Aluplast is a German uPVC window and door system manufacturer with a strong Passivhaus-suitable product line. It directly competes with Internorm's uPVC and composite window systems in DACH and other European residential markets.
• Reynaers Aluminium: Reynaers is a Belgian manufacturer of premium aluminium window, door, and curtain wall systems for residential and commercial projects. It competes directly with Internorm in aluminium and timber-aluminium entrance doors and lift-sliding doors across European markets.
• Veka AG: Veka is one of Europe's largest manufacturers of uPVC profiles for windows and doors, supplying fabricators and partners across the continent. It is comparable to Internorm in uPVC window systems and overlaps in the premium and Passivhaus segments.
• REHAU Windows: REHAU is a major polymer-based systems provider offering premium uPVC and composite window and door solutions, including Passivhaus-suitable systems. It competes with Internorm in the high-performance uPVC and uPVC-aluminium window categories across Europe.
• Aluk Group: Aluk designs and supplies aluminium window, door, and curtain wall systems for residential and commercial projects. It is a direct competitor to Internorm in premium aluminium windows, entrance doors, and lift-sliding doors.

Broad incumbents

• JELD-WEN Inc. JELD-WEN is a large global manufacturer of windows, doors, and other building products serving residential and light commercial markets. It is comparable in fenestration product breadth, but operates as a broad incumbent across many price points and categories rather than Internorm's premium-focused niche.

Regional players

• Pella Corporation: Pella is a major US-based window and door manufacturer serving residential new-build and replacement markets. It is comparable in scale, premium product positioning, and architectural/specifier focus, but operates almost exclusively in North America rather than competing directly with Internorm in Europe.
• Andersen Corporation: Andersen is one of the largest North American window and door manufacturers, offering premium wood, fibrex, and aluminium-clad products. It is comparable in premium branding and material breadth (timber, composite, aluminium-clad), but is a regional player relative to Internorm's European base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCIwtUbx3jGykJQ7UAOPuYzg
• Facebookfacebook.com/Internorm.UnitedKingdom
• LinkedInlinkedin.com/company/internorm-international-gmbh
• Instagraminstagram.com/internorm_uk

Compliance1 record

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 Internorm International GmbH