We are a trusted Gold Level Internorm Partner, supplying new build, extension and refurb projects throughout England and Wales
When performance, efficiency and design matter, Internorm windows and doors stand out as a leading choice. Spectrum have over 15 years experience with Internorm, providing a full design, supply and installation service, supporting homeowners and architects with advanced glazing solutions built for modern living.
Internorm products are widely regarded as some of the finest available. They combine advanced engineering with clean, modern aesthetics, making them a preferred choice for self-builds, renovations and architect-led projects.
INTERNORM WINDOWS AND DOORS UK
Create a warmer, quieter and more energy-efficient home
Premium Austrian-made windows, entrance doors and sliding doors, expertly specified and installed by Spectrum
Why Choose Internorm Windows and Doors?
Internorm is an Austrian company with over 85 years of experience. What began as a small locksmith business has grown into a global brand known for precision and innovation. Every Internorm window and door reflects a strong focus on quality, durability and long-term performance.
Precision Engineering and Innovation
All Internorm windows and doors are manufactured in Austria at three dedicated sites. The entire process is managed in-house, from research and development to glass production and final assembly. This complete system approach ensures consistent quality and attention to detail.
Internorm continues to invest in new technologies. Their specialist teams focus on improving thermal efficiency, acoustic performance and security, helping you create a more comfortable and energy-efficient home.
Spectrum's expertise and experience, combined with Internorm's high-quality engineering, outstanding performance, and innovative technology, create the perfect partnership for your project!
High Performance Windows
Internorm high-performance windows are designed to deliver exceptional thermal efficiency, comfort and long-term durability. Combining advanced engineering with premium materials, these systems help reduce heat loss, improve insulation and create a more energy-efficient home.
Available in a range of styles and finishes, Internorm windows suit both contemporary and traditional properties. Triple glazing, precision manufacturing and innovative sealing systems all contribute to impressive performance, making them ideal for self-builds, renovations and low-energy projects.
Aluminium and Timber-Aluminium Entrance Doors
Internorm aluminium and timber-aluminium entrance doors combine security, performance and modern design. Built with high-quality materials and advanced locking systems, they provide excellent protection while creating a striking first impression for your home.
These doors are available in a wide range of colours, finishes and configurations, allowing homeowners to achieve a bespoke look that complements their property. Exceptional insulation and precision engineering ensure Internorm entrance doors deliver both style and long-term reliability.
Sliding Doors
Internorm sliding doors are designed to maximise natural light and create a seamless connection between indoor and outdoor spaces. Large glazed panels and slim sightlines help create open, modern living areas while maintaining excellent thermal performance.
Engineered for smooth operation and durability, Internorm sliding doors combine contemporary aesthetics with impressive insulation, weather resistance and security. Available in a variety of configurations and finishes, they provide a stylish solution for modern homes, extensions and architectural projects.
Trusted by our Clients for over 20 years.
Rated 4.8 out of 5 on Trustpilot
Internorm UK Installation You Can Trust
Choosing the right product is only part of the process. Proper installation is essential to achieve the full benefits of Internorm UK systems.
Gold Level Internorm Partner
Spectrum Architectural Glazing is proud to be a Gold Level Internorm 1st Window Partner, the highest recognition awarded by Internorm. This ensures you are working with experienced professionals who understand these systems in detail.
Our trained installers follow best practices at every stage, ensuring your Internorm windows and doors perform exactly as intended.
Internorm for Homeowners and Architects
Internorm UK products are ideal for a wide range of projects, including:
- Self-build homes
- High-end renovations
- Extensions and upgrades
- Passive house and low-energy builds
If you want something innovative, technically advanced and built to a higher standard, Internorm windows and doors offer a proven solution.
About Spectrum Architectural Glazing
Spectrum Architectural Glazing have been installing premium windows and doors since 2003. We supply carefully selected Continental products, including Internorm windows and doors, to customers who are building a new home, extending or upgrading their existing property.
Over 20 Years of Experience
Our approach is simple. We provide an honest, knowledgeable and premium service from start to finish. We treat every customer with care and aim to deliver a level of service that matches the quality of the products we install.
We work with homeowners and architects who want more than standard glazing. Our clients are looking for innovation, performance, design and build-quality that stands apart. Whether you are improving energy efficiency or creating a statement feature, we help you achieve the right result with Internorm UK systems.
Explore Internorm with Spectrum
If you are considering Internorm windows, doors or complete glazing solutions, our team is here to help. We will guide you through the options and recommend the best system for your project.
As a Gold Level Internorm partner, we ensure every project meets the highest standards of design, performance and installation.
Contact Spectrum Architectural Glazing today to discuss your next project.
Tel: 01952 814116
Shropshire showroom open:
Mon-Thurs - 8am to 5pm
Friday - 8am to 2pm
Saturday - By appointment
Frequently asked questions about Internorm
What types of Internorm windows and doors are available?
The range includes energy-efficient windows, entrance doors and large lift-and-slide doors. Products are available for both modern and traditional homes. There are also options for low-energy and Passivhaus projects. We can help you compare each system and choose the right products for your property.
What materials are Internorm windows made from?
The windows are available with either timber or high-grade uPVC on the inside. Both options have a strong aluminium outer layer. Timber offers a warm and natural finish, while uPVC is cost effective without compromising on quality or performance. The aluminium exterior protects the frame from the weather and comes in a wide choice of colours.
Do the windows come with triple glazing?
Yes, Internorm windows supplied by Spectrum include triple glazing as standard. Triple glazing works alongside insulated frames and effective seals to reduce heat loss. This can help rooms stay warmer while improving the energy efficiency of your home.
Are Internorm products suitable for Passivhaus projects?
Yes, selected window and sliding door systems are suitable for Passivhaus and other low-energy projects. These products can achieve very low U-values when the correct system and glazing are chosen. Performance can vary based on the product, size and design. Spectrum can review your plans and recommend a suitable option.
Can I customise the colour and design?
Yes. You can choose from a wide range of colours, finishes, handles and design styles. You can also select different finishes for the inside and outside. This means the exterior can complement your property, while the interior suits the style of each room.
How secure are the windows and doors?
Internorm products feature strong frames, secure locking systems and high-quality hardware. Suitable products are also available with added security features, including RC2 options. Spectrum can explain the features of each system and help you choose the right level of security for your home.
Are the windows suitable for older homes and renovations?
Yes. While Internorm products are often used in modern and low-energy homes, there are also options for traditional properties. The ambiente style, for example, offers a more classic appearance. Each product is made to order, so it can be designed to suit your renovation, extension or replacement window project.
What is an Internorm lift-and-slide door?
A lift-and-slide door lifts slightly away from its seals when you turn the handle. This helps the large glass panel move smoothly along its track. When the door closes, it lowers back into place to form a secure seal against the weather. These doors work well for wide openings and can bring more natural light into your home.