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Dec '24
Positivity Breeds Success
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Flush Casement Windows Key Features
Our flush sash windows look fantastic in any surrounding, with their flush external contours and elegant style. Georgian duplex bars can be incorporated into the design for further authenticity, transforming a modern townhouse into the archetypal country house many people dream of.
Offering superior weather resistance, our uPVC flush casement windows have a high performance multifunctional weatherseal. This continuous seal is welded at the corners, maintaining air tightness with no loss of comfort inside the home.
The Deceuninck flush sash window has a night vent locking position. This bespoke locking keep allows for secure ventilation as well as full hardware compatibility, giving the Heritage flush sash window unrivalled security.
Our flush casement windows are available in our standard grooved welded finish and our seamless StyleLine graf welded finish.
Flush Casement Windows Key Features
Our attractive flush casement windows are available in our standard welded grooved finish and our unique StyleLine seamless graf welded finish.
Our flush casement windows provide a U-value of 1.4 W/m2K and are A Energy Rated for superior thermal efficiency.
Optional PAS 24 accredited. These windows are built with night vent locking for secure ventilation. Give your customers peace of mind with flush casement windows from a multi-award winning manufacturer.
Choose from colour customisable inline, monkey tail and tear drop handles to offer your customers plenty of choices.
Our uPVC flush casement windows have a high performance multifunctional weatherseal. This continuous seal is welded at the corners, maintaining air tightness.
The StyleLine difference
StyleLine – the revolutionary welding process that eliminates the grooving stage. Use the slider below to see the StyleLine difference for yourself.
Non-Graf Welded
Graf Welded
The StyleLine difference
StyleLine – the revolutionary welding process that eliminates the grooving stage. Use the slider below to see the StyleLine difference for yourself.
Non-Graf Welded
Graf Welded
Low Maintenance Materials
High grade uPVC
To ensure performance and aesthetic are maintained over an extensive period, all materials used in the manufacture of our flush casement windows will require minimal input to ensure they operate to an ‘as new’ standard.
Due to the inherent qualities of high grade uPVC, these flush casement windows won’t rot, warp, rust, bow, crack or discolour over the years. This stands true even in the face of extensive use and prolonged exposure to the elements.
Unrivalled Efficiency & Performance
Thermally efficient
Utilising a market-leading profile, these windows are also extremely thermally efficient. They have been tried and tested for their heat retention properties, providing an average U-value of 1.4 W/m2K U-Value and an A Energy Rating.
Reduce any unnecessary spending on heating bills with uPVC flush casement windows designed to keep your home warm in the winter. Learn how we are being sustainable at Sternfenster here.
Highly Security Multipoint Locking
Enhanced security features
Our flush casement windows are fitted with enhanced security features. Installed with a multi point shootbolt locking system as standard, our units are compliant with British Standard Kitemark and are PAS 24 certified.
efficient
Low Maintenance Materials
High grade uPVC
To ensure performance and aesthetic are maintained over an extensive period, all materials used to manufacture of our flush casement windows will require minimal input to ensure they operate to an ‘as new’ standard.
Due to the inherent qualities of high grade uPVC, these flush casement windows won’t rot, warp, rust, bow, crack or discolour over the years. This stands true even in the face of extensive use and prolonged exposure to the elements.
Unrivalled Efficiency & Performance
Thermally efficient
Utilising a market-leading profile, these windows are also extremely thermally efficient. They have been tried and tested for their heat retention properties, providing an average U-value of 1.4 W/m2K U-Value and an A Energy Rating.
They also utilise premium grade uPVC to ensure an impressive degree of structural integrity is maintained. You’ll be able to secure both your reputation as an installer and the satisfaction of your customers with a window design that promises an impressive lifespan over many years.
Highly Security Multipoint Locking
Enhanced security features
Our flush casement windows are fitted with enhanced security features. Installed with a multi point shootbolt locking system as standard, our units are compliant with British Standard Kitemark and are PAS24 certified.
efficient
Transform Your Home's Look: Explore Our Window / Door Configurator -
Preview Our Extensive Range of Interior and Exterior Shades With The “Turn Around” Icon.
Single Colours
Our single colours are readily stocked and available with quick turnarounds.
White / White
White Grain / White Grain
Anthracite Grained / Anthracite Grained
Classic Cream / Classic Cream
Chartwell Green / Chartwell Green
Rosewood / Rosewood
Nut Tree / Nut Tree
Irish Oak / Irish Oak
Golden Oak / Golden Oak
Black Ash / Black Ash
Anthracite / Anthracite
Dual Colours
Enjoy interior and exterior customisation, as well as shorter delivery times with our stunning dual colour options.
Heritage Colours
Available for fast dispatch, our heritage colours offer shorter delivery times.
Premium Colours
Providing exceptional quality and individuality, our non stocked premium colour are available at an additional cost with extended lead times.
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White Grain / White Grain
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grained / Anthracite Grained
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Classic Cream / Classic Cream
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell Green / Chartwell Green
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood / Rosewood
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Nut Tree / Nut Tree
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / Irish Oak
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Golden Oak / Golden Oak
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / Black Ash
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Anthracite
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell Green / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Nut Tree / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Golden Oak / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grained / White
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Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Grey Ali / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Smooth / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White Grain / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Classic Cream / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Smooth / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
English Oak / English Oak
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
English Oak / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Heritage White / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ice Cream / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Heritage White / English Oak
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ginger Oak / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Dark Red / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Vin Rouge / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Fir Green / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Blue Steel / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Quartz Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Basalt Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Slate Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Cedar Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Claystone / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Honey Oak Super Matt / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pepper Oak Super Matt / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Soft Cherry / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rustic Cherry / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Bronze Metallic / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pyrite Metallic / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Silver Bullit / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Sage Smooth Matt / White PVC
TURN AROUND
Unlimited Colours
The Deceuninck flush casement window is available in a wide range of foiled colours, helping you choose the perfect colour combination for your home. We also offer colour matching ancillaries, trims and accessories.
Clear
Arctic
Autumn
Casin
Chantilly
Charcoal Sticks
Contora
Cotswold
Digital
Everglade
Flemish
Florielle
Mayflower
Minister
Oak
Pelerine
Reeded
Stippolyte
Sycamore
Taffeta
Tribal
Warwick
Glass Selected:
Clear
Wide Range of Glazing Options
We offer a wide range of stained glass and bevelled glass designs to ensure that our windows offer a striking, impressive aesthetic. Our comprehensive range of styles allows anybody to find the perfect choice for their property with ease.
Brilliant Bronze
Black
Antique Black
Chrome
Gold
Solid Gold
Grey
Satin Chrome
White
Brilliant Bronze
Black
Antique Black
Chrome
Gold
Solid Gold
Grey
Satin Chrome
White
Extensive Choice of High Quality Hardware
We offer a wide range of high quality, authentic hardware options that accurately emulate the appearance of traditional flush casement windows. Our handles are available in a choice of three designs and nine different colour finishes.
Download Your Brochure
DOWNLOAD BROCHURESMake sure you download a brochure to check out our full range of uPVC windows and doors. They’re packed with plenty of additional information, including technical information, detailed colour swatches and photos.
Transform Your Home's Look: Explore Our Window / Door Configurator -
Preview Our Extensive Range of Interior and Exterior Shades With The “Turn Around” Icon.
Single Colours
Our single colours are readily stocked and available with quick turnarounds.
White / White
White Grain / White Grain
Anthracite Grained / Anthracite Grained
Classic Cream / Classic Cream
Chartwell Green / Chartwell Green
Rosewood / Rosewood
Nut Tree / Nut Tree
Irish Oak / Irish Oak
Golden Oak / Golden Oak
Black Ash / Black Ash
Anthracite / Anthracite
Dual Colours
Enjoy interior and exterior customisation, as well as shorter delivery times with our stunning dual colour options.
Heritage Colours
Available for fast dispatch, our heritage colours offer shorter delivery times.
Premium Colours
Providing exceptional quality and individuality, our non stocked premium colour are available at an additional cost with extended lead times.
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White Grain / White Grain
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grained / Anthracite Grained
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Classic Cream / Classic Cream
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell Green / Chartwell Green
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood / Rosewood
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Nut Tree / Nut Tree
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / Irish Oak
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Golden Oak / Golden Oak
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / Black Ash
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Anthracite
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell Green / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Nut Tree / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Golden Oak / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grained / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Grey Ali / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Smooth / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White Grain / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Classic Cream / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Smooth / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
English Oak / English Oak
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
English Oak / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Heritage White / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ice Cream / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Heritage White / English Oak
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Ash / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Heritage White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ginger Oak / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Dark Red / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Vin Rouge / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Fir Green / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Blue Steel / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Quartz Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Basalt Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Slate Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Cedar Grey / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Claystone / White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Honey Oak Super Matt / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pepper Oak Super Matt / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Soft Cherry / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rustic Cherry / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Bronze Metallic / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pyrite Metallic / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Silver Bullit / White PVC
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Sage Smooth Matt / White PVC
TURN AROUND
Unlimited Colours
These flush sash windows are available in a wide range of high quality colours, which will allow you to increase your customer base. You won’t have to turn business away as you accommodate all tastes and preferences. All of our colours are finished with a highly durable finish to reduce any required after sales.
Clear
Arctic
Autumn
Casin
Chantilly
Charcoal Sticks
Contora
Cotswold
Digital
Everglade
Flemish
Florielle
Mayflower
Minister
Oak
Pelerine
Reeded
Stippolyte
Sycamore
Taffeta
Tribal
Warwick
Glass Selected:
Clear
Wide Range of Glazing Options
We offer a wide range of stained glass and bevelled glass designs to ensure that our windows offer a striking, impressive aesthetic. Our comprehensive range of styles allows anybody to find the perfect choice for their property with ease.
Brilliant Bronze
Black
Antique Black
Chrome
Gold
Solid Gold
Grey
Satin Chrome
White
Brilliant Bronze
Black
Antique Black
Chrome
Gold
Solid Gold
Grey
Satin Chrome
White
Extensive Choice of High Quality Hardware
We offer a wide range of high quality, authentic hardware options that accurately emulate the appearance of traditional flush casement windows. Our handles are available in a choice of three designs and nine different colour finishes.
Download Your Brochure
DOWNLOAD BROCHURESMake sure you download a brochure to check out our full range of uPVC windows and doors. They’re packed with plenty of additional information, including technical information, detailed colour swatches and photos.
Click through our showroom to explore our products in greater detail
Explore Our Virtual Showroom
Click through our showroom to explore our products in greater detail
Explore Our Virtual Showroom
The Ultimate Flush Casement Windows
Flush casement windows are a smart way of adding style to your home. No matter the home, whether it’s a new build, traditional, modern, period or even heritage property, these windows are perfectly suited to match all property types.
We offer a wide selection of configuration options, opening styles and panel counts, allowing you to find the perfect flush casement window for your home. Available in a range of colours and finishes, we’re flexible in ensuring that your demands are met with our comprehensive selection, spanning from high quality standard colours to traditional woodgrain foils.
State-Of-The-Art-Machinery
We are proud to have more than 50 years of manufacturing at Sternfenster and are fully committed to UK homeowners and offering sustainable products and services wherever possible. Working closely within the trade and retail industry, we offer nationwide delivery across our comprehensive portfolio.
Our state of the art machinery allows us to produce unique products that stand apart from the competition. Our attractive flush casement windows are no exception.
The Ultimate Flush Casement Windows
It doesn’t matter if your customers require new windows for a new build, traditional, modern, period, heritage or traditional home; these windows are perfectly suited.
Promote yourself as a reliable, efficient and professional installer with flush sash windows that are designed to last. We only offer our trade customers premium products because we know your customers won’t settle for anything less. Find out how to become a Sternfenster Approved Installer today.
State-Of-The-Art-Machinery
Inspired by traditional timber joinery, Deceuninck uPVC flush casement windows can be either fully grooved welded or StyleLine graff seamless finish for a more authentic appearance. This allows them to offer a traditional charm to new builds or an enhancing feature to traditional or conservation properties.
Partner with us for access to our state-of-the-art technology. At Sternfenster, we supply unique products at competitive trade prices.
Frequently Asked Questions
What is a flush sash window?
Similar to regular sash windows, their only difference is that they sit flush with the frame. They are secure, energy efficient and completely customisable.
Are flush sash windows worth it?
The stunning sightlines and slim frames of our flush sash windows offer beautiful outdoor views for years of enjoyment no matter the season. With a high security specification and superior weatherproofing, our flush sash windows are a worthwhile investment.
How fast are your lead times?
We offer exceptionally fast lead times as low as five days without compromising on quality. The range of colours and finishes we offer allow us to answer the demands of all our customers with our comprehensive selection.
Who is Sternfenster?
Established in 1974, Sternfenster became one of the UK’s largest trade fabricators of uPVC and aluminium windows and doors. Currently run by Mike and Simon Parczuk, the original founders’ sons, with over 250 employees and hundreds of years combined experience we continue to deliver high-quality products nationally but with the values of a family-run business.
Frequently Asked Questions
How fast are your lead times?
We offer exceptionally fast lead times as low as five days without compromising on quality. The range of colours and finishes we offer allow us to answer the demands of all our customers with our comprehensive selection.
Are your flush casement windows easy to install?
An easy, simple and smart way to increase your customer demographic, these windows can be easily installed into a wide range of property types.
What advantages do Sternfenster offer?
As a member of our approved installer network, you can gain the advantage of exclusive product guarantees, marketing materials and excellent security guarantees.
How do I become a Sternfenster approved installer?
Are you looking for a supplier to help you grow and expand your business? Find out what it takes to join our exclusive club here.
Who is Sternfenster?
Established in 1974, Sternfenster became one of the UK’s largest trade fabricators of uPVC and aluminium windows and doors. Currently run by Mike and Simon Parczuk, the original founders’ sons, we continue to deliver high-quality products nationally but with the values of a family-run business.
Energy Savings Calculator
Use our energy savings calculator to find out how much upgrading your windows can save you in the long run.
Energy Savings Calculator
Use our energy savings calculator to find out how much your customers can save in the long run.
Find Your Approved Installer
Our network of approved installers guarantees you the best service and the highest quality products.
- Postcode
- Name
- Contact Details
Start Selling Sternfenster Today
Get in touch today with enquires for or any of our market leading products. Sell the best with Sternfenster.
Become An Approved Installer
Grow your business with an award winning manufacturer. We’ll support you with materials and expert guidance every step of the way.
Outsource Fabrication To Sternfenster
Looking to outsource for any of your projects? Get started today. We will provide you with expert guidance for your trade success.
