The Significance of White uPVC Windows in the Industry
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StyleLine – the revolutionary welding process that eliminates the grooving stage. Use the slider below to see the StyleLine difference for yourself.
StyleLine – the revolutionary welding process that eliminates the grooving stage. Use the slider below to see the StyleLine difference for yourself.
Exclusive to Sternfenster, the StyleLine range of windows and doors sets the standard for performance in the industry.
We manufacture StyleLine windows with state-of-the-art technology. Our modern uPVC windows outperform other products in both quality and performance.
Our windows undergo stringent quality control at our facility to ensure every design has a flawless finish. We supply nothing short of the best.
StyleLine windows have a smooth finish. With no grooving stage, there is no loss of vinyl at the corner joint. This trademark makes our windows unique.
There is no corner cleaning stage. The excess plastic is pushed inside the chambers for a tidier, more appealing finish. We transform the manufacturing process to build better.
With multi-point shoot bolt locking, internal beading and superior weld strength, StyleLine windows are extremely secure.
Exclusive to Sternfenster, the StyleLine range of windows and doors sets the standard for performance in the industry.
We manufacture StyleLine windows with state-of-the-art technology. Our modern uPVC windows outperform other products in both quality and performance.
Our windows undergo stringent quality control at our facility to ensure every design has a flawless finish. We supply nothing short of the best.
StyleLine windows have a smooth finish. With no grooving stage, there is no loss of vinyl at the corner joint. This trademark makes our windows unique.
There is no corner cleaning stage. The excess plastic is pushed inside the chambers for a tidier, more appealing finish. We transform the manufacturing process to build better.
With multi-point shoot bolt locking, internal beading and superior weld strength, StyleLine windows are extremely secure.
With cutting-edge Quad Welder technology, we can produce smooth, seamless frames. No vinyl is lost at the corner joint, keeping both the frame and sash tough and durable.
StyleLine windows impress both visually and with their stunning performance. Transform the home with beautiful windows that can add value to the property.
Unlike other uPVC windows, StyleLine does not have grooved corners. Excess plastic is pushed inside the chambers for a tidy finish.
These windows stand apart from others due to our revolutionary machinery. The unique quality of the manufacturing is evident against competitor products.
Highly secure, each StyleLine window comes with a multi-point shootbolt locking system, with key locking handles as standard. They are internally beaded for additional protection.
Our StyleLine windows and doors are compliant with the British Standard Kitemark and Secured by Design standards. You can have peace of mind that these windows are designed in line with police security specifications.
With cutting-edge Quad Welder technology, we can produce smooth, seamless frames. No vinyl is lost at the corner joint, keeping both the frame and sash tough and durable.
Build your reputation and drive your sales with StyleLine windows. They are suited to properties of all styles, making them an easy sell for a wide range of customers.
Unlike other uPVC windows, StyleLine does not have grooved corners. Excess plastic is pushed inside the chambers for a tidy finish.
These windows stand apart from others due to our revolutionary machinery. The unique quality of the manufacturing is evident against competitor products.
Highly secure, each StyleLine window comes with a multi-point shootbolt locking system, with key locking handles as standard. They are internally beaded for additional protection.
Our StyleLine windows and doors are compliant with the British Standard Kitemark and Secured by Design standards. Give your customers consumer confidence with Secured by Design accreditation.
Choose a flush sash or chamfered profile with authentic timber styling.
Choose a flush sash or chamfered profile with authentic timber styling.
Our single colours are readily stocked and available with quick turnarounds.
Enjoy interior and exterior customisation, as well as shorter delivery times with our stunning dual colour options.
Available for fast dispatch, our heritage colours offer shorter delivery times.
Providing exceptional quality and individuality, our non stocked premium colour are available at an additional cost with extended lead times.
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White Grain / White Grain
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grained / Anthracite Grained
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Classic Cream / Classic Cream
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell Green / Chartwell Green
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood / Rosewood
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Nut Tree / Nut Tree
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / Irish Oak
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Golden Oak / Golden Oak
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / Black Ash
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Anthracite
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell Green / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Nut Tree / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Golden Oak / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grained / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Grey Ali / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Smooth / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White Grain / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Classic Cream / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Smooth / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
English Oak / English Oak
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
English Oak / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Heritage White / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ice Cream / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Heritage White / English Oak
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ginger Oak / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Dark Red / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Vin Rouge / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Fir Green / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Blue Steel / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Quartz Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Basalt Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Slate Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Cedar Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Claystone / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Honey Oak Super Matt / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pepper Oak Super Matt / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Soft Cherry / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rustic Cherry / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Bronze Metallic / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pyrite Metallic / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Silver Bullit / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Sage Smooth Matt / White PVC
Styleline windows stand out when matched with the perfect colour. We offer durable, hard-wearing colours that will maintain their vibrancy for many years. Preview our traditional and modern range to explore our wide range of colours.
Glass Selected:
Clear
We offer a range of beautiful, bespoke glazing options. Made to measure and specialist designs are available, along with solar and privacy glass options.
Antique Black
Black
Brilliant Bronze
Gold
Chrome
Grey
Satin Chrome
Solid Gold
White
Styleline windows are available with a range of high performance handles. Choose window handle colours to match the property style.
Our single colours are readily stocked and available with quick turnarounds.
Enjoy interior and exterior customisation, as well as shorter delivery times with our stunning dual colour options.
Available for fast dispatch, our heritage colours offer shorter delivery times.
Providing exceptional quality and individuality, our non stocked premium colour are available at an additional cost with extended lead times.
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White Grain / White Grain
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grained / Anthracite Grained
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Classic Cream / Classic Cream
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell Green / Chartwell Green
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood / Rosewood
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Nut Tree / Nut Tree
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / Irish Oak
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Golden Oak / Golden Oak
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / Black Ash
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Anthracite
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell Green / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Nut Tree / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Golden Oak / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grained / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Grey Ali / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Smooth / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White Grain / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Classic Cream / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Smooth / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
English Oak / English Oak
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
English Oak / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Heritage White / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ice Cream / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Heritage White / English Oak
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Heritage White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ginger Oak / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Dark Red / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Vin Rouge / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Fir Green / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Blue Steel / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Quartz Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Basalt Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Slate Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Cedar Grey / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Claystone / White
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Honey Oak Super Matt / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pepper Oak Super Matt / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Soft Cherry / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rustic Cherry / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Bronze Metallic / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pyrite Metallic / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Silver Bullit / White PVC
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Sage Smooth Matt / White PVC
Styleline windows stand out when matched with the perfect colour. We offer durable, hard-wearing colours that will maintain their vibrancy for many years. Preview our traditional and modern range to explore our wide range of colours.
Glass Selected:
Clear
We offer a range of beautiful, bespoke glazing options. Made to measure and specialist designs are available, along with solar and privacy glass options.
Antique Black
Black
Brilliant Bronze
Gold
Chrome
Grey
Satin Chrome
Solid Gold
White
Styleline windows are available with a range of high performance handles. Choose window handle colours to match the property style.
StyleLine windows are exceptionally strong. The uPVC material is bolstered with steel for strong reinforcement. The glazing is also internally beaded which prevents intruders from prising into the unit from the outside. All security is in line with the latest European standards, giving you complete peace of mind that your home is secure.
Our StyleLine windows are manufactured using state-of-the-art technology, which enables us to produce uPVC products of superior design and quality. These windows provide you with a consistent, high quality finish throughout.
Every window goes through a stringent manufacturing process to provide you with a flawless design and stunning aesthetics.
Steel reinforcing, internal beading and incredible weld strength make our products exceptionally strong. The steel reinforcement of the uPVC enhances the rigidity, offering greater protection against the elements.
StyleLine windows are internally beaded in line with the latest European security standards, including BS7950 and PAS24. Additional claw locking is available for enhanced protection.
StyleLine windows are unique in that our technology completely removes the grooving stage. Our machinery removes the corner joint which provides a unique flush finish.
Partner with us for access to our state-of-the-art technology. At Sternfenster, we supply unique products at competitive trade prices.
There is a ten year guarantee on all PVC profiles, including woodgrain options. We are confident our products and their materials are high quality and built to last.
Stand out from the crowd with unique windows. The impeccable finish is StyleLine’s trade mark, but our exclusive windows and doors are also stronger and more resistant, thanks to a revolutionary welding process that completely eliminates the grooving stage.
Not only do these windows look stunning but they also possess outstanding weatherproofing performance. With a WER (Window Energy Rating) of A as standard, you have the option for further enhancements by choosing triple glazing. Clever design features such as double weather seals, low sightline gaskets and super space bars result in incredible energy efficiency.
We are committed to reducing carbon emissions in line with the government’s Net Zero target of 2050. Using sustainable materials such as uPVC, we’re able to recycle post consumer waste on a broad scale and contribute towards a circular economy.
Learn more about sustainability at Sternfenster here.
We are an industry leading, award winning manufacturer based in Lincoln, well known throughout the UK for the quality of our products. We deliver outstanding service to the trade and homeowners, giving you everything you need to get your project started.
Choose us for products like Styleline that are made better than most. We work with trusted installers throughout the UK who perform fittings of the highest standard.
Contact our team today with any enquiries you have about StyleLine products or our services.
Stand out from the crowd with unique windows. The impeccable finish is StyleLine’s trade mark, but our exclusive windows and doors are also stronger and more resistant, thanks to a revolutionary welding process that completely eliminates the grooving stage.
There is a ten year guarantee on all PVC profiles, including woodgrain options. We are confident our products and their materials are high quality and built to last, so we ensure you receive the best guarantee on our products possible.
We are an industry leading, award winning manufacturer based in Lincoln, well known throughout the UK for the quality of our products. We deliver outstanding service to the trade and homeowners, giving you everything you need to get your project started.
Choose us for products like Styleline that are made better than most. We work with trusted installers throughout the UK who perform fittings of the highest standard.
Contact our team today with any enquiries you have about StyleLine products or our services.
Not only do these windows look stunning but they also possess outstanding weatherproofing performance. With a WER (Window Energy Rating) of A as standard, you have the option for further enhancement by choosing triple glazing. Clever design features such as double weather seals, low sightline gaskets and super space bars result in incredible energy efficiency.
We are committed to reducing carbon emissions in line with the government’s Net Zero target of 2050. Using sustainable materials such as uPVC, we’re able to recycle post consumer waste on a broad scale and contribute towards a circular economy.
Learn more about sustainability at Sternfenster here.
Use our energy savings calculator to find out how much upgrading your windows can save you in the long run.
Use our energy savings calculator to find out how much your customers can save in the long run.
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Our network of approved installers guarantees you the best service and the highest quality products.
Get in touch today with enquires for or any of our market leading products. Sell the best with Sternfenster.
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