Aluminium Windows
Ruislip Windows and Doors Ltd. Installers of double glazed windows, doors and conservatories.


Superior strength and slimmer sightlines


We offer a choice of either the renowned Sapa Crown or Aluk systems for our aluminium windows and doors. Despite the higher price point than uPVC, aluminium is an increasingly popular choice - it works particularly well in both traditional and modern contemporary applications. With slimmer profiles than uPVC and virtually maintenance free, our aluminium windows are available in a wide choice of colours, including dual colours. The system is fully weather stripped to achieve the highest levels of weather performance and all profiles incorporate polyamide thermal barriers to meet the latest Building Regulation requirements in terms of U values and window energy ratings.

Sapa and Aluk


Let the light shine into your home


With quality and innovation at its heart, our aluminium window and door systems improve the way we live our lives. Combining high performance design with elegant and innovative features, both our Crown and AluK glazing systems offer optimum comfort with maximum security.


For many years both Crown and AluK (formally Beaufort) have been developing windows and doors specifically for the UK market, answering the needs of homeowners and offering them reliable and low maintenance solutions that improve their living environment and add value to their home.

With stylish and attractive products to suit any property, our comprehensive range brings together innovative design, a wide range of finishes and the highest standards in security and performance to make your home comfortable, safe and secure.


Over 400 colour options

Our aluminium windows use ‘True Dual-Colour‘ technology affording a palette of over 400 colours for the inside and outside of your windows, to blend or contrast with your home as you wish. The finish is a high performance, non-fading, hard and durable coating that is baked onto the frames. Being low maintenance, it needs only an occasional wipe down to stay looking as good as new.


Modern and traditional styles


Sustainable aluminium offers a complete range of window styles to complement your home, from traditional to ultra modern, allowing you the choice of a reliable and attractive finish. For contemporary installations, aluminium is always the preferred choice - wide expanses of glazing can be achieved to create a relaxed and comfortable living environment for you and your family to enjoy. And, with minimal maintenance and full guarantees, you can rest assured that you are installing the most reliable windows available.


Your windows can be finished with an inspiring array of Georgian, leaded, patterned or stained glass highlighting distinct aspects of your home to add character, style and privacy.


  • A Rated for energy efficiency and reduced costs;
  • Secured by Design approved for peace of mind;
  • PAS 24 Security certified;
  • Slim profile for better aesthetics;
  • Virtually maintenance free finish.
  • Dual colour frames for a personalised finish
  • Softline profiles for a more traditional look
  • Narrow 52mm profile to increase the view
  • Compatible with the full suite (windows, doors, patios, bifolds, etc)
Traditional style meets modern performance with our Chamfered profile windows
Our innovative contemporary window systems provide slim sight lines for a subtle, contemporary look

Perfectly suited to enhance both traditional and modern properties

Please see our gallery page for photos of aluminium installations by Ruislip Windows & Doors Ltd.

Our Heritage windows are a perfect sustainable replacement for your period property
Our innovative contemporary window systems provide slim sight lines for a subtle, contemporary look


For more in-depth information on both our main aluminium systems, please see our PDF brochures.

Installers of Sapa Crown, Kommerling, AluK, EcoSlide, Reynaers, Rehau, Hurst, Fensa and Certass registered.


Ruislip Windows and Doors Ltd

218 Field End Road, Eastcote, Middlesex, HA5 1RD.

Tel: (020) 8868 1133 Email:

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Registered in England: 03054680

Fensa: 15058: Certass: TRR14010

Website by Michelle