05
Apr '24
New Thermally Efficient Aluminium Casement Windows
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Aluminium Bifold Doors
Our sleek Visoline 1000 aluminium bifolding doors create a room with a view, providing slim sightlines and a huge glazed area. Slimmer frames allow for lots of natural light and panoramic views of the outdoors.
Our bifold doors can be configured to open in, open out, stack from the left or the right, open in the centre, end or in between. They are also designed to open as single or double doors.
You can change the feel of a room as you please with our bifolding sliding doors. Our Visofold bifolding doors have the ability to transform the home, providing total versatility and the flexibility to open up rooms.
These doors fold back to inches of opening providing a seamless entrance between rooms or to the outside. Our aluminium bifold doors create the appearance of bigger, brighter spaces.
Our bifold doors look stunning both inside and out, adding a wow factor to any home. What’s more, because we offer a wide variety of colour choices, including dual colours, we’re sure we can supply you with a bifold system to match any taste.
Aluminium Bifold Doors
Provide your customers with better security with multi-point lock mechanisms on main opening sashes, shoot-bolt locking on floating mullions and advanced hardware.
Configurations include left to right and right to left with square edged profiles. All our bifold doors are fitted with a secure locking system with a domestic style ‘lift up’ handle for smooth access.
Other bifold door features include high quality EDPM rubber gaskets and weather brushes, which improve weatherproofing. More optional extras include head vents for background ventilation, low thresholds for easy accessibility and integral blinds.
The standard 28mm double glazed units offer fantastic performance. You can further enhance their capabilities by opting for 36mm triple glazed units.
Residential and Commercial
Huge variety of configurations
Suitable for both residential and commercial applications, our aluminium bifold doors are available in a huge variety of configurations. Whether they are used as an alternative sliding door, as part of a conservatory or used within a commercial project, our aluminium bifolding doors are sure to make an impact.
Find a Sternfenster approved installer near you today.
Low Threshold
Low thresholds for smooth transition
All doors have the option of either low thresholds or unimpeded, easy access and rebated thresholds. The system can lower threshold heights by up to 25mm, giving a smoother transition between spaces for mobility impaired users.
If your home requires frequent wheelchair access and greater accessibility, look no further than Sternfenster! Find an installer near you today.
Thermal Performance
Polyamide thermal breaks
Unlike aluminium products of the past, our aluminium bifolds are very energy efficient. They are thermally broken, meaning there is lower heat transference through the unit. These bifold doors can keep you warm in the winter and cool in the summer when it counts!
high performance
Residential and Commercial
Huge variety of Configurations
Suitable for both residential and commercial applications, our trade aluminium bifold doors are available in a huge variety of configurations. Whether they are used as an alternative sliding door, as part of a conservatory or used within a commercial project, our aluminium bifolding doors are sure to make an impact.
Low Thresholds
Low Thresholds for Smooth transition
All doors have the option of either low thresholds or unimpeded, easy access and rebated thresholds. The system can lower threshold heights by up to 25mm, giving a smoother transition between spaces for mobility impaired users.
Your customers can enjoy an easy outdoor access thanks to the Visofold’s ultra low-threshold.
Thermal Performance
Polyamide thermal breaks
Our aluminium folding doors feature a polyamide thermal break which enhances the thermal performance of the profile as well as improving the overall U-value. Expect an average U-value of 1.6 W/m²K.
high performance
Transform Your Home's Look: Explore Our Window / Door Configurator -
Preview Our Extensive Range of Interior and Exterior Shades With The “Turn Around” Icon.
RAL Colours
Our standard RAL colours are readily stocked and available with quick turnarounds.
Agate Grey
Anthracite Grey
Black
Brown
Fir Green
Ivory
Pebble Grey
Purple Red
Signal Grey
Umbra Grey
Violet Blue
White
Dual Colours
Enjoy interior and exterior customisation, as well as shorter delivery times with our stunning dual colour options.
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:
Agate Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Brown
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Fir Green
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ivory
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pebble Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Purple Red
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Signal Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Umbra Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Violet Blue
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White
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:
Anthracite Grey - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Brown - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Fir Green Matt - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ivory - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pebble Grey - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Purple Red Matt - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Signal Grey - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Umbra Grey -White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Violet Blue - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White - Ivory
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Any RAL
Unlimited Colours
To ensure that our aluminium bifold doors match the home perfectly, we offer a wide range of colourways, including more natural colours to help your new units blend with the rest of the home perfectly.
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 doors offer a striking, impressive aesthetic.
Our comprehensive range of styles allows anybody to find the perfect choice for their property, with ease. To achieve the absolute pinnacle in double glazing why not choose our self-cleaning glazing?
Download Your Brochures
DOWNLOAD BROCHURESDownload our brochure to check out our full range of windows and doors. They’re packed with plenty of additional information, including technical information, detailed colour swatches and photos that can serve as inspiration for your home.
Transform Your Home's Look: Explore Our Window / Door Configurator -
Preview Our Extensive Range of Interior and Exterior Shades With The “Turn Around” Icon.
RAL Colours
Our standard RAL colours are readily stocked and available with quick turnarounds.
Agate Grey
Anthracite Grey
Black
Brown
Fir Green
Ivory
Pebble Grey
Purple Red
Signal Grey
Umbra Grey
Violet Blue
White
Dual Colours
Enjoy interior and exterior customisation, as well as shorter delivery times with our stunning dual colour options.
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:
Agate Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Brown
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Fir Green
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ivory
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pebble Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Purple Red
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Signal Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Umbra Grey
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Violet Blue
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White
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:
Anthracite Grey - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Brown - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Fir Green Matt - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Ivory - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Pebble Grey - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Purple Red Matt - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Signal Grey - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Umbra Grey -White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Violet Blue - White
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White - Ivory
TURN AROUND
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Any RAL
Unlimited Colours
To ensure that our aluminium bifold doors match the home perfectly, we offer a wide range of colourways, including more natural colours to help your new units blend with the rest of the home perfectly.
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 doors offer a striking, impressive aesthetic.
Our comprehensive range of styles allows anybody to find the perfect choice for their property, with ease. To achieve the absolute pinnacle in double glazing why not choose our self-cleaning glazing?
Download Your Brochures
DOWNLOAD BROCHURESDownload our brochure to check out our full range of windows and doors. They’re packed with plenty of additional information, including technical information, detailed colour swatches and photos that can be presented to your customers to help them decide on their next project.
Transform Your Home's Look: Explore Our Window / Door Configurator -
Preview Our Extensive Range of Interior and Exterior Shades With The “Turn Around” Icon.
Transform Your Home's Look: Explore Our Window / Door Configurator -
Preview Our Extensive Range of Interior and Exterior Shades With The “Turn Around” Icon.
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
Sustainable Bifold Doors
Often nicknamed the ‘green metal’, aluminium occurs naturally in the ground, and requires a lot less energy to manufacture compared to materials like timber.
As aluminium is strong and durable, it can last up to 30 years and when proper care is applied can be recycled indefinitely, resulting in less waste for the environment.
Increased Security
Effortless operation is achieved through robust stainless steel rollers that glide smoothly. Magnetic door clips are available for securing open door sashes. High security locking mechanisms provide an outstanding level of protection through a number of features such as hook bolt locks, one piece keeps, and shootbolt locking on floating mullions.
These locks are fitted into an inherently strong aluminium profile to ensure the high standard of security is consistent across the whole door frame.
QUICKglaze Knock in Bead Technology
Traditional bead fitting methods are no longer the most financially viable option for installers. In the past, when fitting aluminium bifold doors, it was necessary to fit the gaskets separately to the bead.
QUICKglaze knock-in bead technology solves this problem. These glazing beads are manufactured with co-extruded gaskets and provide a secure fit and aesthetically pleasing finish.
Increased Security
Effortless operation is achieved through robust stainless steel rollers that glide smoothly. Magnetic door clips are available for securing open door sashes. High security locking mechanisms provide an outstanding level of protection through a number of features such as hook bolt locks, one piece keeps, and shootbolt locking on floating mullions.
These locks are fitted into an inherently strong aluminium profile to ensure the high standard of security is consistent across the whole door frame.
Frequently Asked Questions
Why choose Sternfenster for aluminium bifolds?
We’re offering our market leading bifold doors with a lead time of five days, or £100 off your next order! Contact our team today to find out more about our latest trade offers.
Do bifold doors add value?
Bifolds are highly sought after in today’s housing market. They add an elegant yet modern appeal to any home and are a sure way to increase the overall value of any property.
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.
We are proud to have over 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.
Does Sternfenster offer any warranties for their products?
We offer competitive warranties, lead times as fast as five days and outstanding aftercare.
Frequently Asked Questions
Why choose Sternfenster for aluminium bifolds?
As of 2023, we’re offering our market leading bifold doors with a lead time of five days, or £100 off your next order! Contact our team today to find out more about our latest trade offers.
What are the advantages of QUICKglaze?
Benefits of choosing QUICKglaze knock-in bead technology include:
• A secure fit at every installation
• Deliveries available between 3 – 5 days
• Co-extruded gaskets included
• Shorter installation process
• No wedge gasket glazing seal needed
• Cost effective
• All parts included
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.
We are proud to have over 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.
Does Sternfenster offer any warranties for their products?
We offer competitive warranties, lead times as fast as five days and outstanding aftercare.
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