Internorm is Europe’s market-leading manufacturer of high-quality uPVC, uPVC/aluminium, and timber/aluminium windows and doors.
All tilt-and-turn windows are triple-glazed as standard. They offer exceptional thermal performance, enhanced security, excellent acoustic insulation of up to 47 dB, and ultra-low u-values of 0.6 W/m²K, making Internorm’s windows energy-saving.
With various styles and finishes available, Internorm glazing solutions seamlessly integrate with any architectural design. They are a trusted brand for architects, builders, and homeowners across the Southeast because they manufacture highly thermally insulating window systems for passive houses, self-builds, retrofit extensions, and home renovations.
To see a selection of Internorm’s window and door systems, please visit our Bracknell showroom or download a brochure. You may also be interested in reading our blog, ‘Why Choose Internorm Windows and Doors?’
Internorm windows and doors offer:
To meet the rising demands on design, technology, quality, and comfort, Internorm has developed a series of revolutionary I-Tec innovations and technologies that are the perfect additions to Internorm windows and doors.
Explore a wide range of Internorm window design styles under the
Each style offers unique features, including energy-efficient options, allowing you to find the perfect Intyernorm windows and doors for your home.
Inside view, available in:
uPVC/timber in white
Décor foils for uPVC surfaces in different colours
Timber in all RAL colours, as well as varnished and opaque standard colours
Outside view, available in:
uPVC in white
Aluminium clad in many colours.
Aluminium clad in structured timber décor colours.
Internorm provides homeowners in Berkshire, Hampshire, Surrey, and Oxfordshire with a premium selection of energy-efficient uPVC windows, suitable for both modern and traditional properties.
Internorm provides an excellent range of award-winning, triple-glazed uPVC-aluminium windows, making them a preferred choice for Passivhaus, self-build, and retrofit projects.
Internorm timber/aluminium composite windows are a highly popular choice among homeowners.
The H stands for Holz, the German word for wood, and the F stands for Fenster, the German word for window.
Internorm is known for its stunning craftsmanship and use of durable, sustainable timber and high-quality external aluminium cladding. It offers bespoke timber/aluminium composite windows that withstand all weather conditions while preserving the’ beauty, naturalness, and warmth of wooden windows.
The Internorm KV 450 window combines a flush design with high-performance, integrated blinds. Cleaning the blinds’ slats is no longer necessary.
The integrated sun protection blinds, Venetian blinds or Duette® blinds are fitted between the panes, meaning they do not get dusty. If you need to access the blinds, a hinged single pane of glass can be opened.
This is available with an aluminium frame or glass edge (Studio range). The blinds can be operated manually or via a smartphone or tablet.
Innovation is at the centre of the Internorm HF 410 timber/aluminium composite window, and the revolutionary innovation of the I-tec core and I-tec glazing are standard.
It features a laminated timber core and solid hardwood exterior, adding further strength and durability to these high-performance triple-glazed windows.
Internorm HF 410 is available in the Home Pure, Home Soft, Studio, and Ambiente styles and a range of wood finishes, including Oak, Ash, Larch, and walnut. For a vintage look, a new Grey Oak is now available.
HS 330 timber-aluminium composite lift & slide doors from Internorm look stunning and offer outstanding thermal performance, exceptional acoustic insulation and enhanced security.
Like Thames Valley Windows, Internorm is a family business, now the largest internationally active window brand.
With over 90 years in the glazing industry, passion, innovation, and quality are at the forefront of their exceptional windows and doors, which set them apart.
They have manufactured over 21 million window and door units, all made to your specifications in their ultra-modern manufacturing facilities.
Innovation keeps Internorm advancing its quality capabilities. It constantly updates its glazing products to ensure they are as energy efficient, ergonomic, and durable as possible while retaining all the sought-after qualities.
Thames Valley Windows is proud to say that we are an Internorm Distribution Partner, guaranteeing perfect product quality and the highest service levels, before, during and after installation.
You may also be interested in reading our blog, ‘Why Choose Internorm Windows and Doors?’ or Thames Valley Windows Won Not One But Two Internorm Awards