Our accredited network of installers offers the highest quality uPVC and aluminium products with excellent customer service.
Access our latest technical information, product content, video archives, media centre, Sternfenster Plus and much more.
Find out about Sternfenster Window Systems.
Become a Sternfenster Approved Installer
Find your nearest Sternfenster approved installer.
Download our latest product brochures & documents.
View our library of detailed resources, including price guides & useful information.
FREE Online Calculator What is the Price of Aluminium Bi-Fold Doors? Bifold doors normally cost ...
FREE Online Cost Calculator How much do aluminium doors cost? Our Aluminium Doors range between ...
FREE Online Window Cost Calculator Are you wondering about the price of aluminium windows? Our ...
How much do uPVC windows cost? The answer to this question relies on several factors. As a ...
Industry leading uPVC manufacturers of Deceuninck windows providing energy efficiency, security ...
Stylish, secure and slim frame architectural aluminium windows from Smart.
Unique StyleLine windows.
High-quality Planitherm glass sealed units.
See how Sternfenster‘s windows & doors meet industry standards for energy efficiency.
Decorative and stylish glass features to finish your windows.
Upgrade to annealed or toughened glass for added security & energy efficiency.
Stylish, secure and energy efficient uPVC windows from Deceuninck.
Modern, innovative and secure uPVC tilt and turn windows from Deceuninck.
Beautiful and authentic uPVC flush casement windows from Deceuninck.
Smarts’ range of slim-framed aluminium windows offer quality, style and strength.
Our aluminium tilt and turn windows offer exceptional strength, durability and are resistant to ...
Strong and durable architectural aluminium curtain walling from Smart.
Strong, stylish and highly secure Deceuninck uPVC Doors.
Beautiful, strong and sleek Smart aluminium doors.
Beautiful composite doors from Deceuninck.
Discover a new dimension of performance and beauty with our advanced composite door featuring ...
Beautiful and authentic flush doors from Deceuninck.
Unique StyleLine doors.
Strong, secure and great looking Deceuninck Residential Doors.
Connect your home and garden with attractive Deceuninck uPVC French Doors.
Enhance your home with stunning Deceuninck uPVC Patio Doors.
Sleek, strong and contemporary Smart aluminium residential doors.
Stunning, slim-frame and contemporary aluminium bifold doors from Sternfenster.
Beautiful, slimline and easy to operate aluminium patio doors from Smart.
Commercial aluminium doors suitable for a huge range of projects.
Outstanding Quality, Secured by Design
Commercial Aluminium Shop Front.
View our gallery of stunning uPVC door images.
View our gallery of attractive aluminium products.
View our gallery of stunning storm & flush sash, StyleLine images Windows & Doors
Casement, Flush Sash, Tilt & Turn and Vertical Sliding Window Images
View our gallery of superb StyleLine window and door images.
View our gallery of stunning Residence Collection images.
Switch Your Sector To:
1 installer found in TW17
Offering exceptional home improvement solutions throughout Berkshire, Hampshire, Oxford and Surrey since 1976, Alpha Windows are a family run...