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Slim, sleek, beautifully made and built to last, our Sunflex windows range comes with the same expertise and craftsmanship as our bifolding and sliding doors range from the same prestigious brand.

Made in the UK, Sunflex windows are designed to provide impressive replacements for your dated windows and provide the right look for your glazing in a new extension or building project.  

Created with today’s design trends in mind, Sunflex windows come with elegant slim frames with a square edge aesthetic in virtually unlimited designs. 

Casement windows, tilt and turn, gable designs, folding windows, and corner glass-to-glass designs are all possible. And, of course, they’re designed to perfectly complement the style of matching Sunflex bifolding and sliding patio doors.

Sunflex windows are some of the best on the market, giving you the best modern styling with outstanding performance. HBD Systems are approved Sunflex distributors, fully trained in installing these high-quality architectural windows. 


Sunflex Aluminium Windows – modern design and superior performance

The craftsmanship and quality of Sunflex windows improve your home with not only one of the best brands but also one designed around the best possible design, sealing, energy efficiency and security.

Infinitely customisable, Sunflex windows come in a choice of frame styles and are designed to improve modern or traditional houses.  Picture windows feature the slimmest possible frames, giving you more glass, light, and views.  Casement windows come in three frame depths, giving you the right product for newly built or existing openings. We can also custom-design your new windows to meet special requirements such as shapes, bay windows and corner windows with or without a visible post.

Sightlines start at just 74mm with a choice of traditional, to modern, even a steel-look design. Sunflex windows also come in more than 200 RAL colours, a different shade inside and out and the latest metallic and textured colour finishes giving a different look and feel to your new windows.   

Sunflex windows specifications

High grade insulated aluminium profiles with a deep polyamide thermal break coloured with a durable, low-maintenance and guaranteed colour finish. Your new Sunflex windows come as standard with 28mm glass units, having a soft-coat low-emissivity coating, warm edge spacer bars and argon gas fill. Or there’s a higher specification triple-glazed version available.

All Sunflex windows are tested and certified to the latest security standards.  High quality espagnolette or shootbolt locks engage securely in the strong frame profiles, operated by stylish and reliable locking window handles. Your window glass is secured from the inside only, preventing removal from the outside.

Depending on the glass specification and frame design, Sunflex windows come with A or B window energy ratings and U-Values as low as 1.2Wm2K, helping lower your energy bills and insulate your home better.

Visit the HBD Showroom and view our extensive range of aluminium windows.

Sunflex windows deliver on style and quality, providing you with a one-brand solution for your project when combined with other Sunflex products. Sunflex bifolding and sliding doors, front doors, canopies and internal door systems are all available to view in our St. Albans showroom.


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