
Rear Extension
Multi-panel bifold doors fully opening onto a landscaped garden, creating a seamless indoor-outdoor living space.

Cortizo Aluminium Bifold Doors
Premium aluminium bifold doors manufactured in Leeds using Cortizo systems. 5–10 day lead times, fleet delivery, and the UK's most competitive trade and retail pricing.
Lead Time
2–10 Working Days
Max Height
3,000mm
Max Width
7,000mm (7 Panels)
U-Value
From 1.4 W/m²K
Get so much more for your money with Mazuli's unbeatable lead times and superior quality.

2–10 Working Days
Lead Time
Mazuli aluminium bifold doors combine slim sightlines, superb hardware quality and industry-leading lead times — all manufactured in-house at our Leeds factory using premium Cortizo aluminium profiles. Whether you're a trade installer fitting out a new-build extension or a homeowner looking to transform your living space, our custom-made bifold doors are engineered for seamless indoor-outdoor living. Every door is precision-cut and assembled by our experienced factory team, quality-checked before dispatch, and delivered on our fleet of vehicles to a guaranteed date.
Premium Cortizo aluminium profiles for minimal frame interruption and maximum glass.
Robust security as standard with PAS 24 accreditation available on request.
Single-panel everyday access without folding all panels — available on any configuration.
Delivered on our branded fleet to a guaranteed fixed date that won't change.
Custom-manufactured to your exact measurements with individual panels up to 1,200mm wide and 3,000mm tall — total openings up to 7 metres. Traffic doors for everyday access can be incorporated into any configuration.
The most popular configuration. Perfect for typical kitchen or living room extensions with a traffic door option.
Max Width
3,600mm
Max Panel Height
3,000mm
Max Panel Width
1,200mm
Max Panel Weight
120kg

Choose left or right opening · Specify fold direction per panel · Traffic door option on all configurations
Choose from our seven stock colours with the fastest lead times, or specify any RAL colour for a bespoke finish. Dual-colour options — different inside and out — are available at no extra charge on all stock finishes.
RAL 9016
Unglazed Lead Time
2–5 days
Glazed Lead Time
6–10 days
Dual-colour (e.g. Anthracite outside / White inside) available on all stock finishes at no extra cost.
In most cases, replacing or adding bifold doors falls under Permitted Development and does not require planning permission — provided you're not in a conservation area, listed building, or making changes to the front elevation in certain boroughs.
Mazuli bifold doors are engineered to meet all relevant Building Regulations, so your project passes sign-off without delays. Our doors exceed Part L thermal requirements and are available with low-threshold options for Part M accessibility compliance.
Part L — Thermal Performance
U-values from 1.4 W/m²K exceed the 1.6 W/m²K requirement
Part A — Structural Integrity
Aluminium profiles tested for wind load and structural strength
Part M — Accessibility
Low-threshold and level-access options for wheelchair and pushchair access
Part F — Ventilation
Trickle vent options available for background ventilation compliance
Order glazed and we supply the glass units with your door, or order unglazed to source your own.
We supply the glass units alongside your door frames, hardware and locking — everything you need for a complete installation on-site.
Fully assembled with frames, hardware and locking — ready for you to glaze on-site. Popular with trade installers with specific glass requirements.
See how Mazuli bifold doors transform homes across the UK — from compact extensions to grand rear elevations.

Multi-panel bifold doors fully opening onto a landscaped garden, creating a seamless indoor-outdoor living space.

Slim-profile Cortizo bifold doors connecting an open-plan kitchen with an outdoor dining area.
Our bifold doors feature thermally broken aluminium profiles with polyamide thermal break technology, exceeding current Building Regulations. The result is excellent insulation without compromising the structural strength that aluminium is known for.
1.4
W/m²K U-value (double)
1.0
W/m²K U-value (triple)
Class 4
Air permeability
C5/B5
Wind resistance
Our U-values comfortably exceed the Building Regulations Part L requirement of 1.6 W/m²K. Combined with Class 9A water tightness, your project meets every compliance requirement.
Every Mazuli bifold door is fitted with multi-point espagnolette locking as standard. Combined with internally beaded glazing and anti-lift blocks, our doors provide reliable day-to-day security straight out of the factory.
Espagnolette locking system engages at multiple points along the frame for robust resistance
Glazing beads sit inside the property — glass cannot be removed from the outside
Shoot bolts and anti-lift blocks on intermediate panels prevent the doors being lifted from the track
SBD-accredited hardware packages available on request for projects requiring enhanced certification
Our locking hardware and glazing methods meet the security expectations of modern residential and commercial projects — without costly upgrades.
Enhance your bifold doors with premium hardware options and practical add-ons to suit your project requirements.
Available in White, Black, Anthracite Grey and Chrome finishes to complement your chosen door colour.
A single opening panel for everyday access without folding the entire door set — available on all configurations.
Internal Georgian bar grids add a traditional aesthetic to contemporary aluminium profiles.
Sealed between the glass panes for maintenance-free light control. No dust, no cleaning, no cords.
Background ventilation for Part F compliance without compromising security or clean frame lines.
Everything you need to know about colours, sizes, and performance
Cills are available in 90mm, 150mm, 180mm, 230mm and 250mm. Head extensions / add-ons in 20mm and 38mm are also available.
Threshold options include Standard and 20mm / 20mm with rebate.
Add-ons include matching hardware, Georgian bars, trickle vents, integral blinds and traffic door options for everyday access without folding all panels.
Mazuli's in-house fleet of delivery vehicles mean you receive your product on time every time
Standard Colours (Subject to Order Quantity)
Standard Colours (Subject to Order Quantity)
Everything you need to know about our bifold doors — pricing, sizes, lead times and more.
Whether you're a trade installer or a homeowner, we have the right solution for yourbifold doors project.
Volume pricing, dedicated account management, and the UK's fastest lead times. Join hundreds of trade installers who trust Mazuli.
Factory-direct quality at prices that undercut national brands. Get a personalised quote with no hidden extras — it's as easy as sending us your measurements.
Known for being one of the leading manufacturers of aluminium systems for the architecture and industry sectors in Europe.
Download detailed technical documentation for your bifold doors project planning and specification.
Full technical specifications, dimensions, U-values and performance data for your bifold doors system.
Download PDFVisual guide to available configurations, opening options and key dimensions.
Download PDFStep-by-step installation instructions including preparation, frame fixing and glazing procedures.
Download PDFComplete product brochure featuring colour options, hardware choices, specifications and project photography.
Download PDF