Aluminium Bifold Doors Made to Measure for UK Homes
Our aluminium bifold doors open up the back of your home to the garden. Thermally broken frames hold large panes of glass, and the panels fold neatly to the side when you want the space open. Every set is made to measure and fitted by our own certified team.
We offer three proven systems: AluK BSF70, F80 IconiK and F82 Luminia. You can choose supply only or a full fitting service, and every installation is backed by our 10 year guarantee.
25+ years in business
Certified installers
1000+ Home installations
10 Year guarantee
What Are Bifolding Doors and How Do They Work?
Bifolding doors are external doors made from a row of glazed panels joined by hinges. Rollers carry the panels along a track, so they fold together and stack at the side. Unlike standard patio doors, they let you use almost the full width of the opening.
Most bifolding doors include a traffic door. This single panel opens like a normal door for everyday use. You fold back the full set only when you want the whole opening clear, and multipoint locks secure every panel along its height when closed.
Where They Work Best
Folding doors suit wide openings that lead to a patio or garden. Customers most often choose them for rear kitchen extensions, open plan kitchen diners, garden rooms, conservatory replacements, new builds and full renovations. Restaurants, cafés and shops use them too.
For busy business premises, our commercial door systems are built for heavier daily traffic.
Aluminium Door Options
Choose from three high-performance aluminium door systems, each designed to suit different structural, aesthetic, and energy performance requirements.
Certified & Trusted
BSF70 & BSF70 HI Bifold Doors
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BSF70 Bifold Doors are a versatile solution designed to suit a wide range of building types. The system is available with either a chamfered or square bead finish, allowing flexibility in appearance.
Lightweight yet structurally strong aluminium frames support large glazing units between 28mm and 40mm, delivering a balanced combination of strength and visual openness. Door leafs slide smoothly and fold neatly back to create wide, unobstructed openings.
The BSF70 system supports both open-in and open-out configurations, making it suitable for residential and mixed-use projects. A flush line pop-out handle allows stacked panels to sit close to the wall, creating a smooth transition between indoor and outdoor spaces. Low threshold options also support Part M compliance, improving accessibility.
Download technical and product information.
These resources provide clear specifications, hardware details, and installation guidance to help you choose the right solution with confidence.
Certified & Trusted
F80 IconiK Slimline Bifold Doors
Information
Downloads
The F80 IconiK Bifold Door is designed for projects where slim sightlines and modern appearance are a priority. With visible frame widths as narrow as 87mm when using the slim sash, this system maximises glass and natural light.
Available in both open-in and open-out configurations, the IconiK system supports panel sizes up to 2400mm x 1200mm. Installation is simplified using the Quik-Clip™ glazing bead, while a full range of sub-cills allows for flexible fitting across different property types.
From an energy performance perspective, the IconiK bifold door meets Part L building regulations, achieving U-values of 1.3 W/m²K with double glazing and 1.0 W/m²K with triple glazing. This makes it a strong option for energy-conscious homeowners.
Download technical and product information.
These resources provide clear specifications, hardware details, and installation guidance to help you choose the right solution with confidence.
Certified & Trusted
F82 Luminia Bifold Doors
Information
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The F82 Luminia Bifold Door system is engineered for high performance and demanding applications. Designed with installation efficiency in mind, it delivers excellent thermal performance while maintaining slim aluminium profiles and smooth operation.
Supporting panel heights of up to 2600mm, the Luminia system achieves clean sightlines using minimal aluminium framing. With U-values as low as 1.3 W/m²K, it provides strong energy efficiency suitable for modern UK projects.
Security and durability are key strengths of this system. PAS 24 certification confirms compliance with UK security standards, while high levels of wind, water, and air resistance ensure reliable performance across residential and commercial environments.
Download technical and product information.
These resources provide clear specifications, hardware details, and installation guidance to help you choose the right solution with confidence.
Colour Options
Part of our comprehensive aluminium doors range, our bifold door system is available in multiple colours including anthracite, or select from a wider palette of powder-coated aluminium finishes. Powder coating provides a durable, colour-stable surface designed to withstand daily use and exposure to the elements.
White
Black
Black on
White
Anthracite
Grey
Anthracite
Grey on White
Any RAL
Handle Options
Bifolding door handles play an important role in both appearance and usability. Our Aluminium doors are available with a choice of handle styles designed to complement the door system while offering smooth and reliable operation.
White LL
Satin LL
Chrome LL
Graphite LL
Bronze LL
Antique Black LL
Key Features
See the real differences before you choose
| Features | BSF70 & BSF70 HI | F80 IconiK Bifold Door | F82 Luminia Bifold Door |
|---|---|---|---|
| Max. Sash Height | 2400mm | 2400mm | 2500mm |
| Max. Sash Weight | 130kg | 130kg | 150kg |
| Glazing Thickness | 24mm – 40mm | 23mm – 46mm | 28mm – 44mm |
| Air Tightness | Class 4 (600Pa) | Class 2 (300Pa) | Class 4 (600Pa) |
| Water Tightness | Class 9A (600 Pa) | Class 5A (200 Pa) | Class 9A (600 Pa) |
| U-value (double glazing) | 1.6 W/m²K / 1.4 W/m²K | 1.3 W/m²K | 1.3 W/m²K |
The Complete Aluminium Doors Handbook
Everything you need to know before buying aluminium doors, such as their configurations, costs, thermal performance, security standards, planning permission, and maintenance, is covered in full detail.
Bifold Door Designs
Aluminium doors can be configured to open inwards or outwards, with multiple panel combinations available. This flexibility allows the system to suit compact openings, wide spans, and different day-to-day access needs. The design you choose affects how the doors stack, how the space is used, and how easily you can move between indoors and outdoors.
Even number of Bifolding Panels
Bifold doors with two, four, or six panels offer a balanced and symmetrical appearance. This configuration is ideal when you want the panels to fold evenly to one side or split to fold back at both ends.
Note: With six-panel setups, the middle panels can slide away smoothly, creating a wide and open feel that works well for larger extensions and garden openings.
Odd number of Bifolding Panels
An odd number of panels, such as three, five, or seven, allows one panel to act as a traffic door. This is a practical option for everyday use, as it provides easy access without needing to open the entire bifold system.
Note: Odd-panel configurations are popular in family homes and busy spaces where convenience and flexibility are important.
Enjoy Privacy without regular Maintenance with Integral Blinds
Integral blinds are permanently sealed within the double-glazed unit, offering a stylish, maintenance-free solution for light control and privacy. Unlike conventional blinds, they remain protected from dust, moisture, and everyday damage, keeping them looking clean for years. Ideal for busy family homes, integral blinds combine modern convenience with improved energy efficiency and a sleek, uncluttered appearance.
Recent Aluminium Bifolding Doors Installation
Our recently completed projects across the UK showcase the flexibility, clean lines, and premium finish. Each project reflects our commitment to precision manufacturing and professional installation.
Certified & Trusted
Trusted, Certified and Fully Compliant Installers
We are certified installers, working to the highest UK standards. Our certifications give peace of mind to homeowners that their investment is protected and professionally fitted.
Manufactured in Britain
UK made quality
All uPVC and aluminium windows and doors are precision-manufactured within the United Kingdom.
FENSA Registered Installer
Fully certified installation
Window and door installations certified through FENSA registration and regulatory compliance processes.
10 Year Guarantee
Long term peace of mind
All window and door systems include a ten year guarantee for manufacturing integrity.
Energy Efficiency and Security
Our doors are fully made to measure and tailored to your requirements. Our bespoke doors ensure performance, security, and long-term reliability with:
Thermal Performance
Thermally broken aluminium frames reduce heat transfer. When combined with double or triple glazing, systems achieve competitive U-values that support Part L compliance.
Weather Performance
Advanced seals and engineered frame systems deliver strong performance against wind, rain, and air infiltration.
Security
Multi-point locking systems combined with robust aluminium profiles enhance protection. PAS 24 options provide additional reassurance for residential and commercial use.
Guaranteed Success with our Work Process
1. Free Consultation & Expert Survey
Our experienced team visits your property to take precise measurements and assess the structural requirements of your opening. We provide honest, no-pressure advice on the right system for your space, budget, and design preferences — with no obligation to proceed.
2. Made-to-Measure Manufacturing
Once approved, your doors or windows are crafted to exact specifications using high-quality materials, ensuring durability, precision, and a perfect fit.
3. Professional Installation & Aftercare
Our experienced in-house team installs your products with precision and care, ensuring smooth operation and a flawless finish. We also provide ongoing support and warranties for long-term peace of mind.
Frequently Asked Questions
How much do aluminium bifold doors cost in the UK?
Most projects cost between £1,400 and £7,500, averaging around £5,000 fully installed. Size, panel count, system and glazing set the final price.
When paired with double or triple glazing, these doors can achieve competitive U-values that support compliance with current UK Building Regulations, including Part L.
Proper installation and correct glazing selection are equally important to ensure long-term energy efficiency and comfort during colder months.
Can the doors be made to measure?
Yes. Every set is made to the sizes taken at survey. You also choose the system, panel layout, colour, glass, handles and threshold.
What sizes are available?
There is no single standard size. Sash heights reach 2400mm on BSF70 and F80 IconiK, and 2500mm on F82 Luminia. F80 IconiK panels can be up to 1200mm wide.
If views and daylight matter most, yes. F80 IconiK gives visible frames from 87mm. It also has our best U value, at 1.0 W/m²K with triple glazing.
Slimline Aluminium Bifold Doors: Why Frame Width Matters
Frame width decides how much glass and garden you see. Slimline aluminium bifold doors use narrow profiles, so less frame interrupts the view and more daylight reaches the room. On wide openings with several panels, the difference is obvious every day.
Aluminium is stiff for its weight, so a narrow frame can carry heavy glass without bending. That’s why slim frames work in aluminium and not in bulkier materials. Our F80 IconiK system gives visible frame widths from just 87mm.
Slimline Bi Fold Doors vs Standard Frames
Standard frames look fine on small openings, but every meeting point adds a stripe across the view. On a five-panel set, those stripes add up. Slimline bi-fold doors reduce each one, so the opening reads more like a glass wall.
The difference matters most on wide kitchen extensions and garden rooms. On a narrow two-panel opening, a standard frame may be all you need.
Slimline Aluminium Bi Folds and Sightline Figures
“Slimline” is a label, not a measurement. Always ask which part of the profile a supplier has measured. When you compare slimline aluminium bi-folds, ask for the visible frame width in millimetres where two panels meet.
Our slimline bifold doors guide explains how to compare sightline figures fairly between suppliers.
Ultra Slim Aluminium Bifold Doors for Maximum Glass
For the slimmest frames in our range, choose the F80 IconiK. Its visible frame widths start from 87mm with the slim sash, and panels reach 2400mm high and 1200mm wide. It’s our best choice when views and daylight matter most.
Ultra-slim aluminium bifold doors don’t mean weaker doors. The F80 IconiK still meets Part L energy rules, achieving 1.3 W/m²K with double glazing and 1.0 W/m²K with triple glazing. That makes it our best option for energy-conscious homes too.
Slim Aluminium Bifold Doors for Every Budget
Not every project needs the slimmest frame available. Our AluK BSF70 balances slim lines, strong performance and value, which suits most homes and extensions.
Many slim aluminium bifold doors we fit use BSF70, because it combines a neat profile with excellent weather ratings. It’s a practical middle ground between budget and the ultra-slim end of the range.
Slim Frame Aluminium Bifold Doors for Large Panels
Slim frames can still carry very large, heavy glass. Our F82 Luminia supports sashes up to 2500mm high and 150kg, which is hard to match in other materials.
Choosing slim frame aluminium bifold doors for tall openings means checking the sash weight limit, not just the frame width. Luminia’s strength lets it keep minimal framing even on demanding projects.
Slim Frame Bifold Doors vs uPVC
uPVC needs thicker frames and often steel reinforcement to stay rigid. That’s why uPVC bifolds always look chunkier, even on smaller openings.
If you want slim frame bifold doors, aluminium is the material to choose. Our aluminium vs uPVC comparison sets out the differences side by side.
Thin Frame Bifold Doors: What to Ask Suppliers
Thin frames look stunning, but ask about performance as well as looks. Check the sash weight limit, the whole door U value and the security rating for the exact system.
When comparing thin frame bifold doors, ask for the technical sheet rather than a brochure photo. A supplier confident in their product will happily share test data.
Our Three Bifold Door Systems
Each system balances budget, sightline and performance differently. AluK BSF70 suits most homes, F80 IconiK gives the slimmest frames, and F82 Luminia handles the largest, heaviest panels. All three sit within our wider aluminium door range.
AluK BSF70 and BSF70 HI
The AluK BSF70 is our most versatile system. You can choose a chamfered or square glazing bead, and it takes glazing units from 24mm to 40mm with sashes up to 2400mm high. A flush pop-out handle lets stacked panels sit close to the wall.
BSF70 opens in or out, and low threshold options support Part M access. It achieves 1.6 W/m²K, or 1.4 W/m²K in the HI version. It also reaches Class 4 air tightness and Class 9A water tightness.
F80 IconiK Slimline
F80 IconiK is our choice for maximum glass, with visible frames from 87mm. A clip-in glazing bead and a full range of sub sills make fitting simpler. It opens in or out and meets Part L energy rules.
F82 Luminia
F82 Luminia is built for larger panels and exposed sites. It carries sashes up to 2500mm high and 150kg, achieves 1.3 W/m²K and holds PAS 24 security certification. It also reaches Class 4 air tightness and Class 9A water tightness.
Key Specifications Compared
| Feature | AluK BSF70 / BSF70 HI | F80 IconiK | F82 Luminia |
|---|---|---|---|
| Max sash height | 2400mm | 2400mm | 2500mm |
| Max sash weight | 130kg | 130kg | 150kg |
| Glazing thickness | 24mm to 40mm | 23mm to 46mm | 28mm to 44mm |
| Air tightness | Class 4 (600Pa) | Class 2 (300Pa) | Class 4 (600Pa) |
| Water tightness | Class 9A (600Pa) | Class 5A (200Pa) | Class 9A (600Pa) |
| U value (double glazed) | 1.6 / 1.4 W/m²K | 1.3 W/m²K | 1.3 W/m²K |
| U-value (triple-glazed) | Ask for details | 1.0 W/m²K | Ask for details |
| Best for | Most homes and budgets | Slim sightlines and views | Large panels and exposed sites |
Why Choose Aluminium?
Aluminium is strong for its weight, doesn’t absorb moisture, and needs almost no maintenance. It won’t rot, swell or warp, so panels stay aligned, and locks keep working smoothly through hot summers and cold winters.
Powder-coated frames never need painting. Wash them with mild soapy water a few times a year and keep the tracks and drainage channels clear of grit and leaves. A light clean of the rollers and hinges keeps the panels gliding smoothly.
Thermal performance depends on the full specification: frame, thermal break, glass and fitting. We give you the figures for the exact system we quote.
Powder Coated Aluminium Bifold Doors: Colours and Handles
Every frame is powder coated for a tough, colour-stable finish that resists fading. Choose white, black, anthracite grey, dual colour combinations or any RAL colour to match your home. Handles come in six finishes, and integral blinds are available too.
Powder-coated aluminium bifold doors keep their colour for years without repainting. Dual colour frames let you match the inside to your room and the outside to your brickwork. Our guide to grey bifold doors helps you choose the most popular shade.
Long lever handles come in white, satin, chrome, graphite, bronze and antique black. For styling inspiration, browse our bifold door design ideas.
Integral blinds sit sealed inside the double-glazed unit. They never gather dust, and adjustable slats control glare and privacy with no cords or hanging blinds.
Sizes and Panel Configurations
Every set is built to your opening, not picked from a fixed catalogue. Sash heights reach up to 2500mm depending on the system. Even panel counts give a balanced look, while odd counts include a traffic door for everyday access.
Our bifold door sizes guide shows typical widths for each panel count.
3 Pane Bi Fold Doors for Kitchens and Small Extensions
Three panels are the most popular choice for kitchens and smaller extensions. One panel works as a traffic door, so you can step outside without folding the whole set.
Most 3-panel bi-fold doors suit openings of around 2.4m to 3m. They’re the most practical layout for busy family homes.
4 Panel Bifold Doors Aluminium Layouts
Four panels suit medium openings and give a balanced, symmetrical look. They can fold to one side or split to fold back at both ends.
Most 4-panel bifold doors aluminium systems offer a 3+1 or 2+2 split if you want a traffic door. Our 4 panel aluminium bifold door guide covers sizes and costs.
Larger Sets and Opening Direction
Five panels suit wider rear extensions, and six or more suit very wide walls. All three systems open in or out. Outward opening keeps your room clear, while inward opening suits a narrow balcony or small patio. Our configuration guide shows worked examples.
Measuring the Opening
Measure the width at the top, middle, and bottom, and the height on both sides and in the middle. Use the smallest figures as your guide. Our measuring guide walks you through it, and our surveyor always checks before anything is made.
Glazing, Energy Efficiency and Security
Glass, seals and locks decide how warm, dry and secure your home feels. Compare the whole door U value, check the locking specification and look for tested weather ratings. These figures tell you more than any brand name.
A U value shows how much heat passes through a door, and lower is better. Polyamide thermal breaks, multi-chamber profiles and warm edge spacers all cut heat loss. Large glass in cold weather can sometimes cause condensation. Our guide on stopping condensation explains the simple fixes.
Every set uses multipoint locking, with shoot bolts and anti-lift protection for extra strength. F82 Luminia holds PAS 24 certification. Our guide on how bifold door locks work explains each part.
Engineered seals guard against wind, rain and draughts. Low threshold options give a smoother step to the patio. Our low threshold guide covers drainage and floor levels.
How Much Do They Cost?
Most projects cost between £1,400 and £7,500, with fully installed sets averaging around £5,000. Fitted prices typically run from £3,000 to £7,500. Your final price depends on size, panel count, system, glazing and any structural work.
Width, height and panel count set the base price. Your system choice, double or triple glazing, colour, handles, integral blinds and threshold all add to it. Removing old doors and structural work, such as a new lintel, are priced separately.
Always check whether a quote includes VAT, delivery and disposal. These are the most common reasons two quotes don’t match. Our bifold cost guide breaks prices down by panel count.
Supply Only or Fully Fitted?
Supply only means we make and deliver your doors while you arrange your own fitter. Fully fitted means our certified team handles survey, installation and certification under our 10-year guarantee. Most homeowners choose fitted, while builders and self-builders often choose supply only.
| Cost item | Supply only | Fully fitted |
|---|---|---|
| Doors, glass and hardware | Included | Included |
| Survey and measuring | Ask your supplier | Included |
| Installation labour | Not included | Included |
| FENSA certification | Your fitter arranges it | Included |
| Removal of old doors | Not included | Confirm in quote |
| Structural work and making good | Not included | Confirm in quote |
Our installation cost guide explains labour in detail.
Aluminium Bifold Builders and Trade Buyers
We supply made-to-measure sets to builders and trade buyers working on extensions and new builds. Clear specifications and accurate sizes keep your programme on track.
Many aluminium bifold builders order supply only once the structural opening is formed. Our supply only cost guide breaks down prices by panel count.
Aluminium Bifold Architects Specify: Technical Support
Architects need tested data, not brochure claims. We provide U values, air and water tightness classes, security certification and technical sheets for every system, so you can specify with confidence and compare fairly.
The aluminium bifold architects specify most often depends on the brief. F80 IconiK suits view-led designs, F82 Luminia suits exposed sites and large panels, and AluK BSF70 suits most residential schemes.
Aluminium Bifold Door Suppliers for Architects: What We Provide
Choosing between aluminium bifold door suppliers for architects comes down to evidence, documentation and clear responsibilities. We provide technical sheets, published test classes and itemised quotes for each configuration.
Our guide for architects and specifiers explains what to request before approving a door schedule.
Our Supply and Fit Service
One team surveys, orders, installs and checks your doors. Every set is manufactured in the UK, and our installers are FENSA registered, so the work is certified for Building Regulations. Most standard replacements take one working day on site.
First, we visit to measure accurately and check the lintel, floor levels and access, with no obligation. Once you approve the quote, your doors are made to exact sizes. Our team then fits, seals, adjusts, and tests every panel and lock, followed by aftercare and your 10-year guarantee.
Before fitting day, clear the area near the opening, confirm parking for large panels and agree who handles plastering. Any structural work should be complete and signed off. Our installation timeline guide covers each stage.
Ultra Slim Bifold Doors Slough and South Bucks
We fit across Buckinghamshire, including the South Bucks towns and villages that border Slough. Larger homes here often want wide openings, where slim frames make the biggest visual difference.
Homeowners looking for ultra-slim bifold doors on the Slough side of the county border can book a survey with our team. Our Gerrards Cross page covers nearby South Bucks projects.
Will Bifold Doors Suit Your Property?
Bifolds suit most homes with a wide rear opening, especially modern extensions and new builds. The key is matching the system, panel count and threshold to your opening and lifestyle. Period homes and small openings may suit other styles better.
In a new extension, your builder forms the opening to suit the doors. In a replacement, we work with your existing opening. Widening it may need a new lintel or steel beam, checked by a structural engineer first.
For period properties or conservation areas, our heritage doors keep the folding format with traditional detailing.
Most replacement doors don’t need planning permission, but listed buildings and conservation areas may need consent. Replacement doors must still meet Building Regulations, including Part L. Because we’re FENSA registered, we certify our installations for you.
Bifolds aren’t right for every opening. If you prefer panels that slide, our sliding door range covers the same openings. For narrow openings on a tighter budget, our uPVC French doors can be a better fit.
Why Choose bifold-doors.com?
A good supplier gives you clear facts, not just nice photos. We publish specifications, give honest prices and back every installation with a written guarantee. You’ll always know who surveys and who fits.
At bifold-doors.com, every door is UK-manufactured and fitted by our own FENSA-registered team. You get published U values, test classes and technical sheets, plus over 25 years of experience and 1,000+ installations.
Before choosing any supplier, check whether the price is supply only or fitted, what it includes, and which test evidence backs the claims. Our installer questions guide gives the full checklist.
Get a Free Quote
Ready to price your project? Tell us your postcode, rough opening size, and preferred panel layout. Upload up to 10 photos and let us know if you need supply only or full fitting, and we’ll email a tailored quotation within 24 hours.
Prefer a home visit? Book a free survey and our specialist will measure your opening, with honest advice and a no-obligation price. You can also reach us through our contact page.