High-Performing Bespoke Aluminium Casement Windows UK

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Aluminium Casement Windows

Our bespoke aluminium casement windows, KL70W, are thermally broken with high performance glass in double or triple glazing options, resulting in high performance and low energy costs.

All are factory finished in any RAL colour with the additional option of marine grade finish or dual colour option and various glazing options including double and triple glazing.

Discover our full range of aluminium casement windows visit one of our UK showrooms and speak to a member of our knowledgeable team!

All of our timber products are FSC certified
In-house design and manufacturing
Nationwide deliveries and installations
Peace of mind 10 Year Warranty
We’re a Carbon Balanced Company


Our aluminium casement windows are factory finished and powder-coated to the RAL colour of your choice from the standard colour range (RAL 7016 Anthracite Grey, RAL 9010 Pure White, RAL 9006 White Aluminium, RAL 9007 Grey aluminium and RAL 9005 Jet Black) with an option to upgrade to a non standard colour, (see the link below). Dual colour options are also available allowing you to have the inside and outside of the frames finished in different colours.

Due to the extensive choice of colours available we are unable to provide samples. However, a ‘RAL’ colour chart may be downloaded from the link below.  Please be aware that individual screens and printers will vary when reproducing colour charts.

The ‘RAL’ colour system used by Kloeber UK is the international standard for accurately defining paint colours. A much more extensive selection of ‘RAL’ defined colour card samples for our colour finishes is available directly from RAL colour (www.ralcolour.co.uk) on request. You may find the K7 fan deck useful when making your colour choices. When you place your order for Kloeber aluminium casement windows we will require the four number RAL code of your chosen colour.


Our technical drawings are listed below for you to download and help plan your project, but if you need anything further please don’t hesitate to contact our experienced team on 01487 740044.