Internorm is Europe’s leading window brand and has been a pioneer in the industry for over 90 years. We are absolutely delighted to announce that okoHaus is now an official UK specialist partner for Internorm.
At okoHaus, we have always focused on providing high-performance architectural glazing and technical expertise. Now, that expertise is matched perfectly by the world-class engineering of the popular Internorm brand.
One of the primary reasons we are so pleased to be working with Internorm is their commitment to sustainability; they are a patron member of the UK Passive House Trust. To date, the brand has produced over 26 million window and door units from its state-of-the-art manufacturing plants in Austria.
Internorm offers one of the most comprehensive and advanced ranges of Passive House-certified products in the entire glazing industry. In fact, here at okoHaus, we consider Internorm to be the absolute gold standard for energy-efficient luxury windows and doors.
Investing in the Best: Timber-Aluminium Composite Windows
We readily acknowledge that buying into Internorm can represent a significant financial investment. Because of this, our team at okoHaus takes immense pride in delivering the flawless, precision installation engineering required for a product of this calibre. This dedication ensures our clients get the absolute best value – both financially and from a Passive House and sustainability perspective.
While Internorm offers a wide selection, our primary focus is their premium timber-aluminium composite range. This beautiful blend of materials aligns perfectly with our core sustainability values and our mission to reach a carbon-neutral footprint by 2030.
With this range, the warm, natural timber interior combines seamlessly with a weather-resistant aluminium exterior cladding. It is the ultimate solution for self-builders and homeowners who want the natural beauty and tactile feel of real wood indoors, but without the chore of painting and maintaining wooden frames outdoors.
Elite Engineering and Structural Integrity
The structural integrity of Internorm products is exceptionally high. This strength allows architects and home builders to specify much larger window sizes and more expansive glass spans than would ever be possible with standard products.
Importantly, all the timber used in Internorm windows is sourced from sustainably managed forests, featuring premium wood species including oak, ash, larch, walnut, and spruce.
Beyond their technical merits, Internorm windows are simply beautiful to look at. They represent an elite, world-class piece of thermal technology – the result of decades of dedicated research and development. Top-tier Internorm products achieve exceptional, industry-leading U-values – the metric used to measure heat loss – as low as 0.62 W/m²K.
Smart Innovations: iTec Glazing and Solar-Powered Blinds
To meet strict Passive House certification requirements, Internorm window systems feature advanced triple gaskets, and premium triple glazing comes entirely as standard.
Internorm has also developed a proprietary build method called ‘iTec glazing’. This clever engineering involves bonding the glass pane to the window frame continuously all the way around, ensuring superior airtightness, remarkable structural rigidity, and enhanced home security.
One of the standout luxury features available with selected Internorm products is integrated blinds. Amazingly, these blinds are powered by a self-sufficient, integrated photovoltaic module – which is essentially a built-in solar panel. This means they require absolutely no external hardwiring and never need to be connected to grid power.
Peace and Quiet: Experience Internorm at Our Suffolk Showroom
As well as being incredibly efficient thermally, Internorm windows offer impressive acoustic performance. Internorm window and door systems achieve a maximum sound reduction rating of up to 47 decibels, the standard unit used to measure sound intensity.
To give you a real-world idea of what that means, the Internorm range can reduce external noise by up to 12 times compared to standard, low-specification windows.
We now have a working Internorm installation in our showroom in Suffolk, and we highly encourage you to come and visit us to truly appreciate the quality. You really have to physically experience this level of engineering to understand it.
Please come and visit our showroom so you can test Internorm’s innovations in person, look at physical samples, and examine the finer details like proper level threshold detailing. Get in touch with us today, and let us help you integrate these world-class, carbon-conscious glazing systems into your next architectural project.
Last Updated on June 25, 2026