Sternfenster Window Systems uses cookies on its website which may involve the processing of personal data.
Necessary cookies are required for our website to function. We also use other cookies for marketing and statistical analysis. In some cases, data may be transferred to third parties. We won’t activate these cookies without your explicit consent, which you can give or revoke at any time.
You can configure these cookies under preferences. Please be aware that if you limit these cookies, you may not be able to use all our website’s functions. You can change this at any time by clicking on our cookie icon, which is always accessible to you.
Here you can choose which cookies you consent to. Simply use the toggles to give or revoke consent to individual cookies, and you can change your preferences at any time.
Read our Cookie PolicyThese cookies are essential for the website to perform as it needs to. They keep the basic functions and important security features working properly for you, anonymously.
Functional cookies allow you to interact with the website and its content, such as sharing information on social media platforms and other third-party features.
We use these cookies to help us understand how users are interacting with the website. They help to provide us with key metrics on how many visitors we have, bounce rate and the sources of website traffic.
Advertisement cookies help to provide relevant ads and marketing campaigns. These track visitors across websites and mean users can receive more customised ads.
These cookies have not been classified into any of the above categories and are being analysed.
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.
Switch Your Sector To:
Leading Products, Exceptional Marketing and Unbeatable Warranties when you Start Selling Sternfenster
Start Selling Sternfenster Contact Us
As one of the UK’s largest trade fabricators of uPVC and Aluminium, Sternfenster are proud to offer installers market leading, innovative products that have been trusted by homeowners and tradespeople alike for over 45 years! Our exceptional products, fabricated in our state of the art factory in Lincoln, are just one of the many reasons to Start Selling Sternfenster to your customers.
As a family run business, establish in 1974, we have always invested an exceptional amount of effort into our extraordinary network. Part of our commitment to our installers is reflected in our ability to deliver outstanding quality with the fastest lead times possible.
Selling Sternfenster is more than just installing our products. We have an extraordinary range of benefits on offer to ensure you are delivering the best possible services to your customers and clients. From exclusive marketing and training materials to exceptional aftercare services and warranties, it is no wonder installers throughout the UK continue to invest their trust in Sternfenster.
Gain access to our exclusive Sternfenster Training Academy when you Start Selling Sternfenster! Learn all about installing our products in this unique hands-on course!
Learn MoreWe are one of the UK’s largest trade fabricators of high quality uPVC, Aluminium Windows and Doors.
We were honoured to be named G19’s Fabricator Of The Year in 2019’s G19 Awards!
Sternfenster are committed to offering the highest quality at the most competitive trade prices.
We offer exceptionally fast lead times as low as five days, without compromising on quality.
We have a fantastic online system which makes ordering your uPVC and aluminium products easier than ever!
Our exclusive SFPlus intranet is the perfect way to track your orders and get free quotes online.
We have an abundance of exceptional installation guides and training videos in our media hub!
It’s never been easier to market our products with access to a huge range of high quality marketing materials!
Our product warranties cannot be beaten. We are proud to offer market leading aftercare services!
Learn about the benefits of being a part of our Approved Installer Network, with the opportunity to be a part of it!
When you start selling Sterfenster, you will have a dedicated Field Account Manager assigned to you!
Here at Sternfenster, we have over 45 years of industry experience with no sign of slowing down!
Contact us directly or use our contact form below and we'll be in touch as soon as possible.