uPVC Windows

We offer homeowners a fantastic choice of premium, energy efficient uPVC windows, perfect for all styles of property thanks to their stylish, versatile design.

We have Distribution Partners based across the UK who can assist in finding the perfect triple glazed, premium uPVC windows for your home. Find yours today.

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Key Features

Insulated Design

Six internal chambers are engineered into the profile of our Internorm uPVC windows as standard. When combined with complete sealing and innovative I-tec Glazing, you get uPVC windows that achieve the lowest U-values. Ours can score as low as just 0.62 W/(m²K) with the right specifiers.

Acoustic Insulation

Our uPVC windows are fitted with an array of innovations that contribute towards outstanding levels of soundproofing. With triple gaskets, triple glazing and other innovations, they can achieve reduction levels of up to 47 dB. Enjoy better standards of home living with Intenorm.

Secure Locking Mechanisms

Our uPVC windows are among the most robust and secure available on the market. They are fitted with concealed locking systems to complement the naturally robust nature of the profile, glazing and hardware. As a result, they can score as highly as class RC3 for anti-burglary.

Low Maintenance

uPVC remains a standout option for how little upkeep it requires. Our Internorm windows only need occasional attention to operate and perform to a factory fresh standard for decades. Perform a regular clean and oil the hinges around once a year, and nothing else should be required.

Complete Weatherproofing

Triple gasket technology is the standard with our uPVC windows. Engineering them this way ensures that complete weatherproofing is offered to the homeowner. During even the harshest wind and rain, rot, mould, leaking and draughts need not be a concern. You’re protected with our windows.

Customisable Design

Select from a whole array of colour finishes, hardware selections, furniture options, glazing choices and opening configurations with our uPVC windows. Whether they need to effortlessly suit a period property or are required for a new build project, we have the customisation to suit.

Colour Options

White

White

Golden Oak

Golden Oak

Brilliant White

Brilliant White

Cream

Cream

Dark Grey

Dark Grey

Internorm Aluclad Window Design Styles

Studio Studio

The studio design style is characterised by clean lines and a minimalist design. The windows become a design feature in their own right, whilst enhancing exceptional architecture.

Home Pure Home Pure

The modern home pure window with its square edge design perfectly blends into the unique architecture of contemporary buildings.

Home Soft Home Soft

The elegant round edge design of a home soft window creates a timeless look that can be integrated effortlessly into any design and architecture.

Ambiente Ambiente

An ambiente window offers the perfect blend of traditional design and classic detailing. The round profiled edges add a special charm to any façade.

KF 520

uPVC
  • Thermal Insulation

    Thermal insulation (in W/m²K)

    Uw up to 0,63

  • Sound Reduction

    Sound reduction (in dB)

    33 - 47

  • Security

    Security

    up to RC3, RC2

KF 410

uPVC
  • Thermal Insulation

    Thermal insulation (in W/m²K)

    Uw up to 0,62

  • Sound Reduction

    Sound reduction (in dB)

    34 - 45

  • Security

    Security

    up to RC1N, RC2

  • Thermal Insulation

    Thermal insulation (in W/m²K)

    Uw up to 0,62

  • Sound Reduction

    Sound reduction (in dB)

    34 - 45

  • Security

    Security

    up to RC1N, RC2

  • Thermal Insulation

    Thermal insulation (in W/m²K)

    Uw up to 0,62

  • Sound Reduction

    Sound reduction (in dB)

    34 - 45

  • Security

    Security

    up to RC1N, RC2

KF 320

uPVC
  • Thermal Insulation

    Thermal insulation (in W/m²K)

    Uw up to 0,65

  • Sound Reduction

    Sound reduction (in dB)

    up to 35 - 45

  • Security

    Security

    up to RC1N, RC2

KF 310

uPVC
  • Thermal Insulation

    Thermal insulation (in W/m²K)

    Uw up to 0,69

  • Sound Reduction

    Sound reduction (in dB)

    up to 33 - 45

  • Security

    Security

    up to RC1N, RC2

  • Thermal Insulation

    Thermal insulation (in W/m²K)

    Uw up to 0,69

  • Sound Reduction

    Sound reduction (in dB)

    up to 33 - 45

  • Security

    Security

    up to RC1N, RC2

Internorm Timber-Aluminium windows and lift & slide doors

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Internorm uPVC Aluminium Composite Windows

Award-Winning uPVC Windows for All Architectural Styles

Internorm’s modern uPVC windows are incredibly popular with homeowners thanks to their versatility, energy efficiency and hardwearing properties. Internorm’s award-winning uPVC windows can easily be tailored to suit your personal requirements and whatever your visions for your renovations or new property.

Our range of high performance, triple glazed products offers a fantastic choice for all types of renovations, such as extending or upgrading your residential property, or integrating it into a low energy new build home.

More bespoke designs, such as triangular, rounded or pointed arches can also be incorporated to add to individuality.

Internorm was established over 90 years ago. We have been manufacturing uPVC windows for new builds and home improvement solutions since 1966 and are Europe’s leading manufacturer of triple glazed uPVC windows.

When renovating your home through an Internorm Distribution Partner, you’ll be buying an outstanding product that has been perfected from decades of manufacturing experience.

Passivhaus Suited

Internorm uPVC windows offer truly exceptional thermal performance and sound reduction.

Your home’s heat retention can improve significantly when having our uPVC windows installed, with our range reaching U-values as low as 0.62 W/(m²K). This not only means that your home feels more comfortable, your energy bills can be significantly reduced. All our uPVC windows are suitable for use in low energy and Passivhaus applications.

Many of us live in congested urban environments and reducing the noise entering your home is crucial for a better quality of life. Internorm uPVC windows provide superior sound reduction, with the KF410 achieves an outstanding of 47 dB, whereas standard double glazing only reaches 29 dB.

Innovative uPVC Windows

Not only do Internorm’s modern uPVC windows look fantastic, they also offer several exceptional and unique technical benefits. uPVC is durable, making it resistant to harsh weather conditions even after long periods of exposure. When having uPVC windows installed by one of our Distribution Partners, you can rest assured that your house will be protected for years to come with minimal maintenance.

What makes Internorm uPVC windows the best in Europe?

I-tec Glazing – unique to Internorm windows. The glass unit is bonded to the window sash continuously, without any gaps, therefore ensuring maximum security protection, increased thermal insulation and improved sound reduction.

I-tec Insulation – available as standard with two Internorm systems, improving thermal insulation even further.

I-tec Ventilation – integrated into the frame and available in the KF410.

I-tec Secure– included in KF520, achieves resistance class RC3.

If you are looking for integrated blind options, take look at our uPVC/Aluminium range.

Sustainability with uPVC

Creating longer lasting buildings is becoming increasingly important and Internorm uPVC windows are the natural choice for many.

Internorm has long focused on sustainable production methods:

• In-house production of windows, doors, glass and profile extrusion

• End-of-life recycling

• Integration of recycled uPVC in new products

• Locally sourced and efficient use of raw materials

• Waste heat recovery

• Switch to geothermal energy

When buying Internorm products you can be assured of buying from a responsible manufacturer focused on reducing not only its own but also your carbon footprint.

Get to Know Our Other Products

Find Your Nearest Distribution Partner

Want to know more about our fantastic range of uPVC windows? Internorm have work with a selection of Distribution Partners across the UK and make it easy to find your nearest. Their expert teams are dedicated to delivering high quality products, installation and outstanding service and support.

Use our innovative ‘Find Distribution Partner’ tool to locate your nearest, who will be happy to discuss your upcoming uPVC window project. Whatever the size and budget of your next project, our Distribution Partners can help.

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