Cardiff's Premier Double Glazing Installer - Windows, Doors, Conservatories and Roofs


AluK Aluminium Windows and Doors

AluK has been developing aluminium windows and doors for the UK market for over 25 years. With an emphasis on style, the AluK collection combines innovation, high standards and variety while maintaining a competitive place in the market.

The AluK aluminium range includes a variety of windows to suit the aesthetics of any home, including casement windows, flush windows, top swing windows and tilt before turn.

You’ll be spoilt for choice with colours and finishes. With 18 popular matt colours, 13 textured neutrals, 21 contemporary textured metallics and 14 smooth metallics with extra protection for high-end and commercial developments.

AluK Windows – Optio 58BW Casement Window

One of the most versatile aluminium windows on the market, Aluk Optio 59BW, comes in a wide range of configurations and styles so that you may choose exactly the look that is right for your home.

Don’t worry about being overwhelmed by how much choice there is. Our advisers at Heath Windows and Doors will walk you through the various options to make sure you choose a style that you will love for years.

Frame Styles

Not many aluminium manufacturers offer as much frame style variety as AluK Systems. Aluminium windows are usually thought of as plain, flat and modern, but with the AluK range, you can choose from several styles, finishes and colours to suit or enhance the character of your home.

Aluk Optio 58BW Casement Window made of aluminium in 4 frame styles.
Aluk Aluminium Infinium Anthracite Optio 58B Window

Aluminium Window Options

Frame Depth

  • 58mm.
  • 70mm.

Frame Style

  • Flush
  • Bay.
  • Chamfered.
  • Heritage.
  • Ovolo.
  • Contemporary.


Windows are available as top hung, bottom hung, side hung, fixed light, multi-light and French casement.

Aluk Aluminium Doors

Aluk manufactures a superb range of aluminium doors, including entrance, bifold, and sliding doors. All feature internal glazing, slim frames, smooth operation and a wide range of options to make them truly suit the way you live.

Luminia F82 Bifold Door

The Aluk Luminia bifold features classic lines with flush frames. Designed for style and performance, the elegant slimline frames suit any building style without compromising on security and durability.

As you would expect from top quality aluminium bifold doors, you have many options for configuring how your doors open and stack. We can even accommodate corner bifold structures for a dual aspect opening to the garden.

Aluk bifold doors - grey aluminium 4 leaf corner bifolds.
Aluk Aluminium Optio BSF70 Bifold door

Optio BSF70 Bifold Door

Our Aluk Optio bifold doors offer more options for frame styles with the ever-popular chamfered and square bead options.

PAS 24 security accreditation gives you full security assurance and means that the BSF70 can be fitted into new build projects that require compliance with Approved Document Q.

With U-values of 1.6 with double glazing and 1.4 with triple glazing, this door is an energy-efficient option for new build and refurbishment projects.

Luminia SC156 Lift and Slide Door

For panoramic views with less frame and more glass, choose sliding doors. The Luminia sliding door is a market-leading lift and slide door that has been designed to be easy to operate.

Impressive U-values of 1.4 W/m2K for double-glazed units and up to 1.0 W/m2K with triple glazing will ensure that your sliding doors benefit you all year round. The Luminia sliding door offers the highest levels of thermal and acoustic performance.

Aluk Aluminium Luminia SC156 Lift and Slide Door
Aluk Aluminium 58B Door System

Aluminium Entrance Doors – Optio 58 BD Entrance Door

When you choose a front door, you choose more than an entrance to your home. The front door is arguably the single most significant feature to determine or change the character of your home. Aluk’s 58BD front door is one of the UK’s most popular aluminium choices. For security, durability and style, the Optio is a choice that will suit any home.

Flush 58B Aluminium Front Door

For a clean contemporary look with virtually no maintenance, consider the Flush 58B entrance door. Superior levels of security with multi-point locking will make you feel safe and secure when at home or away. Choose from a wide range of glazing and colour options to make your door suit you.

Aluk Aluminium Windows and Doors Gallery

More Aluminium Windows and Doors

Grey Aluminium Windows



4 leaf aluminium bifold doors in white


Aluminium French Doors



You’ll be spoilt for choice with AluK aluminium window colours and finishes. With 18 popular matt colours, 13 textured neutrals, 21 contemporary textured metallics and 14 smooth metallics with extra protection for high-end and commercial developments.

The most popular colours in Cardiff are still neutrals: white, black and grey, but you can choose whatever you like. In addition to our listed colours, we can also match any RAL colour.

Aluk Aluminium sliding doors
  • Serving Cardiff, Newport & Swansea for over 10 Years

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    uPVC & Aluminium  Windows






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    Update Your Home with Modern Patio Doors

    Bifold Doors vs French Doors

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