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Why choose Internorm?

– Europe’s No. 1 window brand – Established since 1931

We are proud to have been awarded 1st Window Partner Gold status.


Triple Glazing for the price of double – contact our specialists to discuss your project

From the birth of the UPVC window to the production of timber/aluminium windows, Internorm has been at the forefront of innovations in high-end windows. Continuous technological developments and innovations make them the pioneer in the high-performance windows and doors sector.

Austria’s premier high-performance windows and doors

Internorm windows UK products stand for excellent quality, innovative technologies and market-leading thermal performance.

Internorm’s high-performance range of windows are available in 4 different design styles:

Timber/Aluminium or uPVC/Aluminium – the choice is yours

Timber windows bring warmth to any home. They are natural and cosy. Cladding the outside with aluminium protects them from weathering. Special foam situated between the timber and aluminium additionally ensures perfect thermal insulation and excellent U-values.

Our HF210, HF310 and HV350 windows are available in spruce, whereas our HF410 window is available in larch, oak, ash and walnut, allowing you to choose different colours.

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    Internorm Windows strengths:

    • Leading expertise in highly thermally insulating window systems for passive houses
    • Triple glazed
    • Pioneer in UPVC windows
    • The total window system concept
    • Leaders in innovative technologies including integrated blinds
    • Security of an internationally leading market brand
    • Can be made Smart Home ready
    • Noise reduction

    Iconic Window Design

    For over eight decades, Internorm has gained a reputation for its iconic design. Their products can integrate with almost any architectural style; classic, contemporary or minimalistic.

    Through their Studio, Home Pure, Home Soft and Ambiente styles, Internorm windows offer both frameless and classic options. When combined with their premium materials of timber, aluminium and UPVC, this leaves you with a solution that matches you and your home perfectly.

    Your ability to get a truly bespoke window does not end there. There are many different handles and a vast array of colour options on offer for both the inside and outside view of your windows.

    Smart Home Windows

    Our Internorm window products can also be made Smart Home ready. If you are thinking about your new build, consider how you can integrate Smart Home technology into your windows, doors and light solutions.


    We invite you to visit one of our showrooms, to see and feel our Internorm Windows for yourself. They are located in;

    Contact us using the make an enquiry button and we will be in touch shortly or call 01295 270938 to speak with a member of our team.

    Click here for further information on the Internorm brand.

    Window Insulation

    Through their innovative I-tec glazing, Internorm windows offer maximum thermal and noise insulation throughout the year.

    When combined with all-around fitted glass panes, which leaves as few gaps as possible between your glazing and window frames, you can be assured of a warm and efficient home wherever you live.

    Internorm’s aluminium and UPVC windows also feature I-tec insulation. This introduces granular insulation to the chambers throughout the window frames to offer gapless insulation. This helps towards stopping any unnecessary loss of heat through the metal frame of your windows.

    Visit the I-tec page

    Window Security

    To keep your family and home secure, the Austrian manufacturer has integrated patented I-tec locking technology into each of their aluminium and UPVC windows. This technology gives you RC2 level security that is almost entirely integrated within your frame, making it easy to clean and considerably sturdier.

    When combined with their I-tec core, which uses several high-quality timber layers to offer a sturdy and resilient frame, your property is in safe hands. Lastly, their I-tec glazing’s fix-o-round technology ensures no spaces exist between the glass pane and window frames.

    Visit the I-tec page

    Smart Window Technology and Shading

    With patented I-tec SmartWindows integrated into your windows, you can indulge in the most technologically advanced windows available on the market today through free smartphone and tablet applications.

    I-tec SmartWindows work with your newly installed windows to allow for convenient opening and closing of individual windows throughout your home. Should your windows feature Internom’s I-tec shading, you can use the I-tec SmartWindows to open your blinds or automate them through the detection of daylight. This is all controlled by a self-sufficient built-in motor.

    Visit the I-tec page

    What is a Passive House (PassivHaus)?

    A passive house provides consistent, comfortable temperatures throughout the year, without using conventional heating or air conditioning systems. Using the existing temperature provided via solar radiation through the windows, as well as the heat from appliances and inhabitants is sufficient.

    The required heating energy for a passive house is only 10% of that needed for a conventional house. These extraordinary savings are rooted in the two basic principles of minimising thermal loss and optimising thermal gain.

    If you’d like to know more, please visit our page – What is a Passive House?

    The Importance of Passive House Windows

    The window in a passive house plays a prominent role in two ways. Firstly, the heat loss despite large glass surfaces can be reduced and secondly, windows increase the possibility for heat gain through solar energy.

    Our highly thermally insulated windows do this exceptionally well: thermal insulation glazing as used in passive houses achieves Ug values of up to 0.4 W/m2K.

    • Essential principles for the construction of passive house windows:
      • Highly thermally insulated glazing
      • Highly thermally insulated frame
      • Thermally optimised edge seal