Door Width Measurement
Measure brick-to-brick at three points: top, middle, and bottom of the opening. Use the smallest measurement and deduct 10mm from it to allow for a proper fit.
High-Quality Aluminium Bifold Doors for Trade Professionals
Our aluminium bifold doors are manufactured for the trade and supplied ready to install—ideal for extensions, renovations and new-builds. Choose from 1–6 pane sets, configure your colours, glazing and thresholds, then send a full spec for a fast quote. You’ll get a premium bifold system with confident performance, straightforward fitting and dependable support from a UK trade supplier.






If you’re quoting bifolds regularly, you need a supplier that keeps projects moving. Our aluminium bifold doors are made for installers and property professionals: manufactured precisely, supplied, protected for site delivery, and backed by clear instructions and knowledgeable support.
From supply-only sets to full supply & installation we make it simple to specify the right bifold door for the job—without compromising on look, security or thermal performance.
We know timing makes or breaks your project. While other suppliers quote “estimated” weeks, we’ve built our business on a concrete promise: Standard specifications delivered in just 6 working days.
If you’re quoting bifolds regularly, you need a supplier that keeps projects moving. Our aluminium bifold doors are made for installers and property professionals: manufactured precisely, supplied, protected for site delivery, and backed by clear instructions and knowledgeable support.
From supply-only sets to full supply & installation we make it simple to specify the right bifold door for the job—without compromising on look, security or thermal performance.
Whether you’re replacing an older set or fitting into a new opening, we offer practical panel counts and sensible sizing ranges to suit most residential projects.
Maximum height: up to 2500mm
Trade tip: If your opening is unusual, send your rough opening size and preferred configuration—we’ll advise the best split and stacking option.
PANE
1 Pane
600mm
1200mm
2 Pane
1200mm
2400mm
3 Pane
1800mm
3600mm
4 Pane
2400mm
4800mm
5 Pane
3000mm
6000mm
6 Pane
3600mm
7200mm
Choose the track/threshold that matches the project’s priorities—standard for everyday installs, low thresholds for improved accessibility, or sleeker options where design is the main driver. We also supply a full range of cills, frame add-ons and ancillary profiles so you can complete the install cleanly without sourcing parts elsewhere.
Match the door to the client brief with modern, durable aluminium finishes—ideal for contemporary extensions and renovations. You can also specify different internal and external colours for projects where interior design and exterior planning requirements don’t align.
Recommended for trade quoting:
Bifold doors can get complicated fast—colours, handles, thresholds, glazing, panel counts and more. We make it easier by letting you spec in two ways:
1) Quick Quote (fastest)
Send: overall size, pane count preference, colour preference, and delivery postcode.
2) Build Full Spec (most accurate)
Select colours (including dual colour), hardware, cills/thresholds, glazing and any add-ons—then send the complete configuration for pricing and lead time.
If you’re sat with a homeowner or architect, use Quick Quote to get a budget figure, then confirm details with Build Full Spec when the job is ready.
Our aluminium bifolds are built to meet modern expectations for residential security and durability—helping you hand over a project with confidence. Quality aluminium frames, robust hardware and proven system design support secure everyday use and strong weather protection.
Trade projects need compliant performance—not vague promises. Our bifold systems are designed to support modern insulation and weather performance requirements, with glazing and specification choices that help meet current Building Regulations expectations. If you need a particular U-value or glazing specification for Building Control or an architect’s pack, send your requirement and we’ll advise the right build-up.
We supply installers, construction teams and property professionals with on-trend aluminium door styles, backed by service that keeps projects moving. You get:
If you’re unsure on configuration, thresholds, sizing or the best split for the opening, call us and we’ll talk it through—so you can quote accurately and install with confidence.
Call: 0203 835 2007 (Mon–Fri, 8am–5pm)
Delivered on our own fleet of vehicles, you can be confident your products will arrive in perfect condition.
Take the risk out of mis-measures and unreliable tradesmen and get a professional install by our team
Yes—where required, we can provide supply & installation. Use Quick Quote to confirm availability for the project location.
Bifolds can be made up to 2500mm height.
As a guide: 2 pane 1200–2400mm, 3 pane 1800–3600mm, 4 pane 2400–4800mm, 5 pane 3000–6000mm, 6 pane 3600–7200mm.
Yes—dual colour is available so you can match interior design separately from the exterior finish.
Use standard thresholds for most installs, and low/flush options where accessibility or a sleeker finish is required. We’ll advise based on the project.
Our systems are designed to meet modern expectations for weather, insulation and security performance. If you have a specific requirement (e.g., U-value), send it across and we’ll advise the best spec.
Yes—we supply cills, frame add-ons and ancillary profiles so you can complete the install properly from one supplier.
Use Quick Quote with overall size, pane preference, colour preference and postcode. For exact pricing, use Build Full Spec and include hardware, thresholds and glazing choices.
Yes—send the opening size and which way you want the doors to stack, and we’ll recommend the best split.
“I recently had the aluminium bifold doors installed in my home, and I must say, I'm thoroughly impressed! The team at 6 Day Doors was professional and worked efficiently to get everything installed within the promised timeframe. ”
James
“6 Day Doors transformed my kitchen area with a stunning roof lantern, and I couldn't be happier with the result. From the initial consultation to the installation, their team was attentive, knowledgeable, and responsive to my needs.”
Sarah
White
Red
Blue
Green
Black
Dark Wood
Light Wood
Azure Blue | RAL 5009
Mist Grey | RAL 7035
Devon Cream | RAL 9001
Chartwell | CSP 029
Aubergine | CSP 007
Anthracite | RAL 7016
Pastel Pink | RAL 3015
Agate Grey | RAL 7038
Slate | RAL 7015
Embers | RAL 7044
Fossil | RAL 7042
Shadow | RAL 7005
Cambridge Blue | RAL 5024
If you would like a different internal colour for your product, please select 'Yes' and choose your colour.
White
Red
Blue
Green
Black
Dark Wood
Light Wood
Azure Blue | RAL 5009
Mist Grey | RAL 7035
Devon Cream | RAL 9001
Chartwell | CSP 029
Aubergine | CSP 007
Anthracite | RAL 7016
Pastel Pink | RAL 3015
Agate Grey | RAL 7038
Slate | RAL 7015
Embers | RAL 7044
Fossil | RAL 7042
Shadow | RAL 7005
Cambridge Blue | RAL 5024
Please be aware that a foiled outer frame and a glass-reinforced plastic frame are made from different materials, which may result in a slight optical color difference.
*Darkwood and Lightwood options are subject to an additional surcharge.
Agate Grey
Anthracite
Black/Brown
Chartwell
Darkwood
Devons Cream
Light Wood
Slate
These guidelines are here to help you measure for a new composite door and frame. If you have any questions, please don't hesitate to contact us; we are happy to assist.
Measure the height and width from the OUTSIDE of your home. Always measure the exact brickwork opening, not the existing frame or door.
Take measurements from brick to brick in at least three different places. Subtract 10mm from both the height and width measurements to allow for a 5mm fitting allowance around the new frame. This allowance ensures the new frame sits plumb and square within the opening. Use packers and silicone to secure the frame in place and fill any gaps.
Measure brick-to-brick at three points: top, middle, and bottom of the opening. Use the smallest measurement and deduct 10mm from it to allow for a proper fit.
Measure brick-to-brick at three points: left, middle, and right of the opening. Use the smallest measurement and deduct 10mm from it to allow for a proper fit.
Measure as above for the main door. For the side panel, measure from the center point of the frame between the door and the side panel to the outer edge of the side panel frame.
Measure as above for the main door. For the top light, measure from the center point of the frame between the door and the top light to the top of the door frame. This gives you the transom drop for the top light.
These guidelines are here to help you measure for a new composite door and frame. If you have any questions, please don't hesitate to contact us; we are happy to assist.
Measure the height and width from the OUTSIDE of your home. Always measure the exact brickwork opening, not the existing frame or door.
Take measurements from brick to brick in at least three different places. Subtract 10mm from both the height and width measurements to allow for a 5mm fitting allowance around the new frame. This allowance ensures the new frame sits plumb and square within the opening. Use packers and silicone to secure the frame in place and fill any gaps.
Measure brick-to-brick at three points: top, middle, and bottom of the opening. Use the smallest measurement and deduct 10mm from it to allow for a proper fit.
Measure brick-to-brick at three points: left, middle, and right of the opening. Use the smallest measurement and deduct 10mm from it to allow for a proper fit.
Measure as above for the main door. For the side panel, measure from the center point of the frame between the door and the side panel to the outer edge of the side panel frame.
Measure as above for the main door. For the top light, measure from the center point of the frame between the door and the top light to the top of the door frame. This gives you the transom drop for the top light.
Elevate the charm of your doors with our exquisite door handle collection. Available in a variety of elegant finishes, our handles are designed to add a touch of sophistication and style to your home.
Straight Handle
Pad Handle
Rectangle Bar
Chrome
Black
Gold
White
Create a lasting impression with our stunning range of door knockers. Available in a selection of striking finishes, our knockers are crafted to bring an element of elegance and charm to your entrance.
Slim Avocet Knocker
Urn Knocker
Available with optional spyhole
Slim Urn Knocker
Available with optional spyhole
Bull Ring Knocker
Chrome
Black
Gold
White
A drip bar is a practical addition designed to prevent water from seeping under your door. It effectively channels rainwater away from the threshold, protecting your interior from moisture and enhancing the longevity of your door.
A door drainage system is a crucial feature that efficiently channels water away from your door. It prevents water from accumulating around the threshold, safeguarding your interior from moisture damage and significantly contributing to the door's durability and longevity.
A door security chain is a practical feature designed to enhance home safety. It allows you to partially open the door while keeping a secure barrier in place, offering peace of mind and an added layer of protection against unauthorized entry.
Chrome
Gold
The threshold is a crucial component that aligns with the door frame on the floor, preventing drafts and water ingress. It ensures the door panel sits securely behind it, providing adequate protection for the bottom of the door.
Available in silver and gold low aluminum options, our thresholds are designed to enhance accessibility by minimizing trip hazards and facilitating easy access for wheelchair users. This practical feature helps maintain a comfortable and secure interior environment.
A door cill is a vital component located at the base of the door frame, offering a sturdy foundation and protection against drafts and water ingress. It ensures the door remains secure and stable, enhancing the overall durability of the entryway.
We offer a variety of cill options to suit your needs, including 85mm, 150mm, and 180mm. Each cill is designed for both functionality and aesthetic appeal, helping to maintain a comfortable and weather-resistant interior environment while adding a touch of style to your home's entrance.
Add-ons are extensions that clip onto the side of your door frame, increasing its thickness or width to provide extra clearance for your composite door. These extensions ensure a perfect fit and smooth operation, especially when additional space is required for proper installation.
Easy to install and highly effective, add-ons enhance both the functionality and alignment of your composite door, making them an excellent choice for achieving optimal performance and aesthetic appeal.
White
Red
Blue
Green
Black
Dark Wood
Light Wood
Azure Blue | RAL 5009
Mist Grey | RAL 7035
Devon Cream | RAL 9001
Chartwell | CSP 029
Aubergine | CSP 007
Anthracite | RAL 7016
Pastel Pink | RAL 3015
Agate Grey | RAL 7038
Slate | RAL 7015
Embers | RAL 7044
Fossil | RAL 7042
Shadow | RAL 7005
Cambridge Blue | RAL 5024
If you would like a different internal colour for your product, please select 'Yes' and choose your colour.
White
Red
Blue
Green
Black
Dark Wood
Light Wood
Azure Blue | RAL 5009
Mist Grey | RAL 7035
Devon Cream | RAL 9001
Chartwell | CSP 029
Aubergine | CSP 007
Anthracite | RAL 7016
Pastel Pink | RAL 3015
Agate Grey | RAL 7038
Slate | RAL 7015
Embers | RAL 7044
Fossil | RAL 7042
Shadow | RAL 7005
Cambridge Blue | RAL 5024
White
White Ash
Cream White
Agate Grey
Anteak
Irish Oak
Rosewood
Moondust Grey
Slate Grey
Anthracite Grey
Black Ash
Antharicite Grey
Black
Chartwell Green
Cream
Oak
Rosewood
White
Whitegrain
Antharicite Grey
Black
Chartwell Green
Cream
Oak
Rosewood
White
Whitegrain
Antharicite Grey
Black
Chartwell Green
Cream
Oak
Rosewood
White
Whitegrain
These instructions are provided to assist you in measuring for a new door and frame. If you have any uncertainties, please feel free to contact us, we will be happy to help you.
Measure both the height and width from the OUTSIDE of your home. Always measure the exact brickwork opening, not the old frame or door currently installed.
Take measurements from brick to brick in at least three different places and subtract 10mm from both the final height and width measurements to allow for a 5mm fitting allowance around the new frame. This allowance will help the new frame sit plumb and square within the opening. Packers and silicone will be required to secure the frame into place and fill any gaps.
Measure brick-to-brick at three points: top, middle, and bottom of the opening. Use the smallest measurement. Deduct 10mm from this measurement.
Measure brick-to-brick at three points: left, middle, and right of the opening. Use the smallest measurement. Deduct 10mm from this measurement.
Measure as above for the main door. For the side panel, measure from the center point of the frame between the door and the side panel to the outer edge of the side panel frame.
Measure as above for the main door. For the top light, measure from the center point of the frame between the door and the top light to the top of the door frame. This gives you the transom drop for the top light.
These instructions are provided to assist you in measuring for a new door and frame. If you have any uncertainties, please feel free to contact us, we will be happy to help you.
Measure both the height and width from the OUTSIDE of your home. Always measure the exact brickwork opening, not the old frame or door currently installed.
Take measurements from brick to brick in at least three different places and subtract 10mm from both the final height and width measurements to allow for a 5mm fitting allowance around the new frame. This allowance will help the new frame sit plumb and square within the opening. Packers and silicone will be required to secure the frame into place and fill any gaps.
Measure brick-to-brick at three points: top, middle, and bottom of the opening. Use the smallest measurement. Deduct 10mm from this measurement.
Measure brick-to-brick at three points: left, middle, and right of the opening. Use the smallest measurement. Deduct 10mm from this measurement.
Measure as above for the main door. For the side panel, measure from the center point of the frame between the door and the side panel to the outer edge of the side panel frame.
Measure as above for the main door. For the top light, measure from the center point of the frame between the door and the top light to the top of the door frame. This gives you the transom drop for the top light.