Aluminium Windows

  • Slim Sightlines
  • High Security Locking Systems
  • Range of Colour Options
  • Thermally Efficient
  • Patented Security Bead Design
  • Weather Resistant
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Aluminium Windows Stevenage

For stunning aluminium windows in Hertfordshire, look no further than Harlequin Glass Ltd. Available to customers in Stevenage, Hitchin, Letchworth, Baldock, Welwyn Garden City, St. Albans and across Hertfordshire, our Aluminium Windows are readily available to enhance all properties types in Hertfordshire.

Our Polyframe Aluminium Windows are manufactured using the quality Sapa Crown aluminium profile, ensuring high levels of security, thermal-efficiency and energy ratings all year round.

Capable of accommodating a wide range of window designs, the aluminium system’s capabilities are unrivalled in the aluminium window market, offering your Hertfordshire home a stylish, robust alternative to uPVC.

Aluminium windows Stevenage

Features and Benefits

Slim Sightlines

Our Aluminium Windows offer exceptional views across your Stevenage home, designed with incredibly slim sightlines for unrestricted views.

Thermally Broken Frames

Designed with thermally broken frames, our aluminium windows will keep your home warm all year round.

Highly Secure

Featuring a patented security bead design, you can rest assured that our aluminium windows will keep you home safe and sound.


Our Aluminium Windows are suitable for glazed screens or bay windows, and can incorporate mullions and transoms with structural capabilities.

Colours and Finishes

With a wide range of colours and finishes to choose from, it’s easy to find the perfect aluminium windows for your Hertfordshire home.


Keep your Stevenage home safe from the elements with our Aluminium Windows, tested in accordance with BS6375 Pt1 Severe Exposure Category 2000.

Aluminium Window Colours Stevenage

Aluminium Windows Stevenage Hertfordshire

Keep Your Hertfordshire Home Safe

Our Aluminium Windows are incredibly robust, featuring a high quality aluminium profile that will keep your home safe against potential intruders or forced entry.

The safety of your family has no value, which is why we source only the best materials for our aluminium double glazed windows. Featuring a patented security bead design, our Aluminium Windows offer the very best in modern home security.

With their high security BS7950 multi-point security Shootbolt locking systems, our Aluminium Windows will keep you family safe from break-ins.

Aluminium Windows Stevenage

Thermally Efficient Aluminium Windows

Weather tested to very strict guidelines, our Aluminium Windows offer extremely high resistance against the elements. It’s important to keep your Hertfordshire home safe from the weather, which is why we put strict measures in place to keep your home weather-proof.

Manufactured using thermally broken aluminium frames, they’re guaranteed to keep your Hertfordshire home much warmer for longer. You’re bound to see a decrease in heating bills as the energy-efficiency benefits of your aluminium windows begin to take effect.

They comply with strict thermal resistance guidelines, giving your Stevenage home the very best in contemporary thermal-efficiency.

Aluminium Windows Prices

For impressive aluminium prices in Stevenage, and other areas around Hertfordshire, use our free online quoting engine.

If you would prefer to get in touch online, complete our online contact form. Our team will be in touch to help you find the perfect aluminium windows for your Hertfordshire home.