DOORS
Aluminium Bi-Fold Doors
As the perfect way to open up your house onto the terrace in the Spring and Summer months, Bi-Fold Doors provide a modern, stylish and truly unique exterior door solution. Designed to be opened to the full aperture of the door frame on either side, our Aluminium and Composite Bi-Fold Doors are perfect for letting the maximum amount of air and light into your room, whether you want to add more space or open up the house when you’re entertaining.
Because this particular range of rear exterior doors have been designed on a hinged system that runs across on a single track, they are also extremely safe and secure and can be manufactured to include laminated glass or triple glazed units for added security. At Martindale we’ve installed a wide variety of bi-fold doors to homes across Northampton, Milton Keynes and beyond, so you can be rest-assured of the quality of doors that will be fitted in your property.
For more information on our doors or to arrange a no-obligation quotation, please contact us below.
FEATURES
KEY FEATURES OF OUR BI-FOLDING DOORS
Whilst we work timelessly with a range of different suppliers to source the perfect bi-fold doors for your home, all of our doors have the following key features as standard.
- Contemporary styling and modern, installer-friendly features
- Smooth opening and closing thanks to top quality hardware
- Fast and easy to install
- Built to last on robust runners which need minimal maintenance
- 3 Star Yale Locking Mechanism
- Maximum light and minimum frame, with a 120mm sightline
- Extra-large panel sizes – sashes up to 1200mm wide and 3000mm high
- Impressive thermal performance with U-Values of 1.4 (triple glazed) and 1.6 (double glazed)
- Weather rated threshold as standard, with options for ramp or low threshold
- Wide range of colours
- Floating corner post option
- 10-year warranty on powder coated finish and hardware
DESIGN
GET A QUOTE
We offer a no obligation quotation and design survey on all Bi-Fold Door enquiries to help you get a better understanding of the cost and installation time required to get the perfect Bi-Folding Doors for your home.
KNOWLEDGE
BI-FOLD DOORS FREQUENTLY ASKED QUESTIONS
Martindale offer a wide range of window styles and options – some of which can be explored below. Whether you’re based in Northampton, Buckinghamshire, Warwickshire or beyond, our team of double glazing experts are on hand to discuss your window needs.
What are bifold doors?
Bifold doors are made up of multiple panels that fold and stack neatly to one side when opened. When closed, they create a solid glazed wall; when open, they provide a wide, unobstructed opening between your home and outdoor space.
What are the benefits of bifold doors?
Bifold doors offer several key advantages:
· More natural light thanks to large glazed panels
· Seamless indoor-outdoor living with wide openings
· Modern aesthetics with slim frames and clean lines
· Flexible configurations to suit different spaces They’re ideal for creating bright, open-plan living areas
Are bifold doors energy efficient?
Yes- modern bifold doors are designed with energy efficiency in mind.
Look for features such as:
· Double or triple glazing
· Low U-values
· Polyamide thermal breaks
· High-performance weather seals These elements help reduce heat loss and improve insulation.
Are bifold doors secure?
Bifold doors can be highly secure when built to modern standards.
Key security features include:
· Multi-point locking systems
· High-security locking cylinders
· Reinforced aluminium frames
· Toughened or laminated glazing Many systems are tested to PAS24 security standards for added peace of mind.
How do bifold doors compare to sliding doors?
Both options are popular, but they offer different benefits:
Bifold doors:
· Create wider openings
· Offer more flexible configurations
· Fully open to connect indoor and outdoor spaces
Sliding doors:
· Have a simpler design
· Can be more cost-effective
· Often provide slightly better thermal efficiency The best choice depends on your space and priorities
Can bifold doors be customised?
Yes, bifold doors are highly customisable.
Options typically include:
· Bespoke sizes and configurations
· A wide range of colours and finishes
· Different glazing types (e.g. toughened or privacy glass)
· Various handle and hardware styles This flexibility allows you to match your doors to your home perfectly.
What sizes do bifold doors come in?
Bifold doors are available in a wide range of sizes.
Typical options include:
· Widths up to around 6.4 metres
· Heights up to around 2.5 metres
· Multiple panel (sash) configurations They can be tailored to suit both small openings and large extensions.
How do bifold door configurations work?
Bifold door configurations are usually described using a number format (e.g. 4-3-1):
· First number = total number of panels
· Second = panels opening one direction
· Third = panels opening the opposite direction You can also choose which panel acts as the main access (traffic door).
Are bifold doors easy to maintain?
Yes – especially aluminium bifold doors.
They are:
· Resistant to weather, corrosion, and warping
· Easy to clean with mild detergent
· Designed with durable finishes Regular cleaning of frames and tracks will keep them operating smoothly –
Can the glass in bifold doors be replaced?
Yes – modern systems are designed to allow glass panels to be replaced if needed.
Some designs use specialist glazing systems that make removal and replacement quicker and easier without damaging the frame.
Do bifold doors require professional installation?
Professional installation is strongly recommended.
Bifold doors are large, complex systems that require:
· Precise measurements
· Correct alignment
· Secure fitting Proper installation ensures long-term performance, efficiency, and security.
Do bifold doors open in or out?
Bifold doors can be configured to open either inwards or outwards, depending on your space and preference. This flexibility makes them suitable for a wide range of property layouts.
What makes aluminium bifold doors a good choice?
Aluminium is one of the most popular materials because it offers:
· Slim sightlines for more glass and light
· High strength and durability
· Low maintenance
· Modern, powder-coated finishes It’s ideal for contemporary homes and extensions.