Internorm FAQs

To quickly find the answers to commonly raised questions about Internorm windows and doors, please select from the following list of FAQs.

If you can’t find what you are looking for, feel free to call us on 01392 444233 or email sales@aspect-windows.com.


How secure are Internorm windows and doors?

As standard, all Internorm windows and doors feature multi-point locking. Specify additional extras, including i-Tec secure, to add additional peace of mind. Internorm Entrance Doors can also be fitted with fingerprint recognition.


Are Internorm windows and doors triple-glazed as standard?

Yes, Internorm products are triple-glazed as standard. This ensures excellent thermal performance, noise reduction and enhanced security.


What materials are available for Internorm windows and doors?

Throughout the Internorm range, you have the choice of timber-aluminium composites and uPVC-aluminium composites, depending on which best suits your style preferences and project demands.


What design styles and customisation options are available?

Yes, all Internorm products comply – and exceed – UK and European building regulations. This includes Part L for their energy efficiency and PAS 24 for security.


Are Internorm windows suitable for a coastal home?

Internorm’s triple-glazed windows are a great choice for coastal properties. They offer expansive views and exceptional thermal and acoustic performance.

They enhance the amount of natural light in your home, while also improving your energy efficiency and overall comfort levels. We also recommend an anodised finish to the external cladding to ensure long-term protection against harsh coastal weather conditions.


Are Internorm windows available with fly screens?

Yes, fly screens are one of a number of high-quality accessories available with Internorm’s windows and door range. Keep bugs and pollen out of your home all year round, while still allowing fresh air to enter.


What are the best windows for Passivhaus homes?

Internorm windows and doors are designed with exceptional energy efficiency and thermal performance in mind, making them perfect for Passivhaus projects.

Both the timber-aluminium and uPVC-aluminium systems achieve impressive u-values below 0.8 W/(m²K), offer exceptional airtightness through a triple gasket design, and incorporate insulation within the frame. The combination of all these elements ensures optimal thermal performance, durability and ensures all homes meet the Passivhaus criteria.


Are Internorm windows and doors energy efficient?

Internorm windows and doors are incredibly energy efficient. In fact, they are among some of the best thermal-performing products on the market. Every Internorm product is triple-glazed as standard to reduce energy consumption and create a higher-performing home environment.


Is triple glazing worth the investment?

Triple glazing is certainly a worthwhile investment. The initial cost of the glazing will be higher, but it guarantees long-term savings by reducing the demands of your heating and energy bills. Combined with improved home performance, value and durability, it is a great long-term investment for your property.


Where are Internorm products manufactured?

Internorm manufactures their windows and doors within their three state-of-the-art production facilities in Austria. Aspect Windows are your trusted, local approved Internorm distributor and installer across the South West.


What certifications and awards do Internorm products hold?

Internorm products are independently tested and certified for performance, including Secured by Design and Passivhaus accreditation.


Can you install Internorm windows and doors into listed buildings or conservation areas?

Yes, it is possible to install Internorm windows and doors into listed buildings or conservation areas, but it is important to be aware of some limitations. Internorm products can meet the requirements of conservation officers; however, we also recommend consulting both your architect and local authority before proceeding.


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