Benefits of Selling Sternfenster Windows and Doors

Established in 1974, Sternfenster is one of the UK’s leading fabricators of uPVC and aluminium windows and doors. Run by Mike and Simon Parczuk, sons of the company’s founder, our team of over 250 employees bring hundreds of years of combined experience to every product we make. Our company has grown over the decades and now our high-quality products are delivered nationwide while maintaining our values as a family-run business.

State-Of-The-Art Factory

All of our products are fabricated in an 80,000-square-meter warehouse based in Lincoln. Everything we offer is produced in-house, meaning that we can offer reduced lead times to our customers. Every product goes through a rigorous manufacturing process and testing, making sure that only the best leave the factory.

Excellent Services and Industry Reputation

We supply industry-leading uPVC and aluminium windows and doors across the UK. With everything developed in-house, we can offer the best prices and lead times, and guarantee high-quality products to our trade and retail customers. At Sternfenster, we are committed to providing you with the best consumer experience. Over 80% of our business is repeat buyers and recommendations, so if you don’t want to take our word for it, trust in your fellow buyers. 

We have dedicated area managers so that you can work with the same person every time you come to us. Our service engineers are spread out the same way to make sure that you are receiving the best service, no matter where in the country you are. 

Market-Leading Profiles for uPVC and Aluminium Doors and Windows

We use the Deceuninck 2500 and 2800 series of profiles to manufacture our full range of uPVC window models. Our aluminium doors and windows are made using high-performance Smart Aluminium profiles.

In-House Services To Give Short Lead Times and Low Prices

We have a range of services in our Lincoln factory to guarantee you short lead times and the best prices. We offer in-house paint spraying to ensure that you have the maximum range of options without delay. We also have an in-house glass toughening plant with two fully automated lines, generating more than 3,500 sealed glass units every week. 

We ship our products nationwide, but also offer all of our uPVC and aluminium products through our trade counter, Express Trade Window Depot, which is located alongside our main Lincoln factory. Our delivery options allow for order tracking and express delivery if needed so that you can receive your products on a short deadline with no compromise on quality.

Stunning Styleline uPVC Windows and Doors

A Sternfenster exclusive design, Styleline doors and windows use unique graf welding to eliminate the grooving stage in their construction, setting a new industry standard of performance. Our Styleline products use state-of-the-art technology to beat similar products in both quality and performance. Our windows are put through stringent quality control at our factory to ensure a flawless finish every time. With no grooving or corner-cleaning stage, you can be sure of a sharper, tidier finish to your frames. Using multi-point shoot bolt locking, internal beading, and superior weld strength, you can count on Styleline installations to keep your home extremely secure. 

Benefits of Being a Sternfenster-Approved Installer

There are a range of perks that come as part of being an approved Sternfenster installer. If you are generating more than £100,000 per year and have an online presence (or are willing to invest in one) and stick to your agreed supplier terms, you could become an approved installer with us today. With us, you can benefit from more leads and the latest marketing package to enhance your business. 

Firstly, we offer a range of industry-leading warranties to protect your purchases. We offer:

• 20 years on sealed units
• 20 years on aluminium
• 12 years on PVC profiles
• 5 years on hardware

With these, you can trust that products bought from us are going to last, or be covered by us in the unlikely event that something goes wrong. 

We have dedicated marketing available to you to help your business advance in a partnership with us. Take advantage of CGI virtual showrooms, a range of image and video options, e-brochures and other promotional materials, social media management, and so many more marketing tools. 

We also help you to generate quick, free leads to expand your business. Our lead management dashboard is the perfect tool to manage the free leads that we generate for our approved installers. We have high-quality quote engines and online conversion tools to help you make the most out of our partnership.

Start Selling With Sternfenster Today

Our company takes pride in being a fabricator that industry leaders want to work with. We can assure you quality when you put our products out into the market. Our industry-leading products fabricated in our Lincoln factory are just one of the many reasons above to start selling with Sternfenster today. Use our contact form to reach out to us today, and a member of our expert team will be in touch with you.