Ideal for the Individualist

Security, Comfort, Peace of Mind

Europe's leader in UPVC, UPVC/Aluminium and Timber/Aluminium Windows


Every Internorm window is unique and our range is tailored to provide options for commercial, industrial and residential properties whatever the scale and scope of the design.


We’ve led in construction technology for decades and are continuously committed to providing forefront technology solutions for designers and architects who want the future today.


Our windows and doors are flexible enough to fulfil the ambition of any designer. Whatever you have in mind, we can help you make real with unlimited design options.

Internorm by Charles Eckart


If you’re looking to combine different materials and elements for different aspects of your design then our range is more than up to the task. Don’t be limited by conventional thinking.


If you’re not satisfied then neither are we. Charles Eckart is dedicated to providing a first rate level of service above and beyond those expected to ensure your vision becomes reality.


Certified fitting experts guarantee clean and professional fitting available through Charles Eckart. We take pride in the function and performance of our innovative technology and ensure that any fitted windows and doors are perfectly installed.

View our latest Internorm products now. Download our free brochure to your device.

Why Choose Us

Don’t settle for less.
With over 80 years’ experience Internorm should be your only consideration if you are looking for quality, sustainability and class in your next building project.

Internorm by Charles Eckart

Why Internorm should be your only choice

Create the best home that you possibly can using Internorm designs and products, constructed to PassiveHaus standard to increase thermal efficiency and reduce your carbon footprint. Make your vision a reality with the help of Charles Eckart who is on hand to provide service each step of the way.

  • Innovative, future proof Internorm technologies
  • Maximum living comfort combined with unparalleled aesthetics in design
  • Industry famous, unrivalled levels of service from dedicated regional suppliers
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