Kawneer Aluminium Casement Windows

Quality Kawneer Aluminium Windows designed & manufactured in the UK

Aluminium windows today are nothing like previous generations. With sophisticated security systems, clean lines, impressive Window Energy Ratings and bespoke designs available, you can enjoy the slim sight lines and high quality finish products for years to come. KAT Aluminium Windows are manufactured to the precise standards needed in Aluminium window manufacturing using the latest technology, machinery and manufacturing processes. Quality is at the heart of what we do, giving you the very best in Aluminium windows for your home.

Casement Window
Key Features

  • Choose from 5 single colour or 2 dual colours
  • Black Anodised finish
  • 5 handle colours: Black, White, Gold, Satin or Polished Chrome
  • 72mm deep frame that fixes to the wall of your property
  • U-Value 1.4 with Hi-reflex thermal spacer
  • Externally beaded as standard
  • Cills: 95mm, 150mm,177mm deep with a 25mm platform on cills
  • 10 Year Guarantee

Colour Range

KAT Aluminium windows are manufactured in Cheshire in colours to match our range of Bifold and Patio Doors and can be made to your bespoke sizes in just 2 weeks from the date of order. Windows are available in a choice of 5 single colours and 2 dual colours, or Black Anodised.

Available colors and materials

Traffic White Gloss
Black Anodised
Anthracite Grey Matt
Anthracite Grey Matt on White Gloss

Material Information

Aluminium windows have gained in popularity in the later half of the 20th century.

The strength of Aluminium allows windows to be made with slim sightlines, resulting in a higher percentage of glass allowing more natural light into your home. Aluminium is more resistant to the elements than PVCu and Timber and is not likely to warp or rot. Windows require very little maintenance, just a wipe with a damp cloth when needed.


For your safety and security, we fit key locking handles to all of our windows.

There are 5 handle colours to choose from:
Satin Chrome
Polished Chrome

Safety & Security

We take your security very seriously and without compromise fit each of our windows with key locking furniture, in five different colours.

The MACO RAIL locking handle conforms to PAS 24:2012 enhanced security performance requirements for doors and windows in the UK. The friction hinge conforms with fire egress regulations and has an easy clean option fitted as standard.

Downloads and guides

KAT Aluminium Casement Windows Download

Martindales Trade Frames are accredited for your peace of mind

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