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External Bifold Doors: Folding Glass Patio Doors

External bifold doors are folding doors that allow you to integrate your outdoor space with your living space. Picture yourself sitting with the patio doors wide open on a warm summer’s day enjoying the breeze. Or snuggling up in the middle of winter watching the rain fall against the window panes when you’re toasty inside.

UPVC Bifold Doors

Bifold Doors

1800mm - 3600mm

UPVC bifold doors are affordable, stunning and hardwearing. It's easy to connect your indoor and outdoor spaces when you install a set of these concertina doors. Available in a range of colours, Climadoor's range of UPVC bifolds are thermally efficient to 1.5W/m2K and boast High Security, PAS24 rated multipoint locks as standard on all options. For added security in New Build Applications, choose our Part Q compliant doors with laminated safety glazing.

£1,758.00 - £5,199.00
Aluminium Bifold Doors

Bifold Doors

1800mm - 4800mm

Transform your home and garden with a stylish set of aluminium bifold doors. With slim frames and huge glass panels, they let in maximum natural light and provide a virtually uninterrupted view of your outdoor space, so you can enjoy it whatever the weather. For a modern and contemporary look, browse our range below and buy your new external aluminium folding doors online today!

£1,959.00 - £5,599.00
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Our External Bifold Doors

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Transform your living space with a set of high-quality exterior bifold doors. Bifold patio doors are doors that fold in a concertina style rather than opening outwards or inwards on standard hinges. This means that they fold back on themselves to allow for optimum natural light and unobstructed views. They are also known as folding sliding patio doors, bi-folding doors, concertina doors or folding sliding doors.

External bifold doors open onto an outdoor space, rather than linking two rooms inside your home (we have a range of oak internal doors available for that too!). This means that they need to be sturdy, durable, versatile and weatherproof, not to mention stylish. And with plenty of styles and colour options to choose from, our exterior folding doors will be a stunning addition to any home (and garden!). 

Why Choose External Bifold Doors?

From experience, we know there’s no better way to enjoy your garden, patio, conservatory or orangery all year-round than by installing a gorgeous set of stylish external bi fold doors. The full-height, clear glazed panels mean that even in the depths of winter you can enjoy plenty of daylight. Watch the view of your garden change through the seasons. The folding, sliding motion allows you to open your space completely during the summer months.


A Varied Range - The Choice Is Yours

We are incredibly proud of our selection of contemporary external folding doors. From our Climadoor Aluminium Folding Doors to uPVC patio doors, we have everything to suit your needs. Whether it’s style, design, or price that’s your key consideration, we've got the doors for you. Our external bi fold doors are durable, and suitable for extensions, refurbishments, and new-build homes.

Our high-quality external folding doors not only meet, but exceed, the requirements of current building regulations. With the proper treatment and maintenance, your bifold door systems will last you for many years to come.

We also stock aluminium bi-fold doors which offer a modern, contemporary look combined with the ultimate in lightweight strength and thermal efficiency. If you’re looking for bespoke bifold doors, we can work on custom, made-to-measure designs for you too. We'll offer support and advice before, during and after installation of your external folding glass doors, to ensure that you get the best out of them.


All our external bi folding doors are available in a range of sizes, finishes and colour options, allowing you complete control over the final look of your doors. Choose the frame width and height, fully finished or unfinished, door thickness and even the opening pattern to suit you and your property. Select from hardwoods like solid engineered oak, oak veneer and pine, or opt for lightweight aluminium.


External Bi-fold Door Security

It's vital to secure your external entryways properly, and your security is paramount for us. This is why all our uPVC aluminium bi folding doors come fitted with a multi point locking system as standard. They also have hidden in-line tracking systems to keep your home fully protected against intruders.

thermal efficiency

Energy Efficient Bi fold Patio Doors

We work hard to ensure all that our bi fold doors, like all our products, have low U-values. This means they’re good at keeping the heat inside your home (saving you money on those heating bills!). All our external folding and sliding doors fully satisfy Part L of the building regulations, so you can install them with the confidence that your home will stay cosy. You should ensure you have toughened double glazing for optimum safety and thermal and energy efficiency. Read our folding doors U value and thermal efficiency guide here.

weather resistance

Weather Resistant External Glass Bifolding Doors

All our exterior bifold doors have resilient weather seals to keep out cold, rain and snow. Our glass uPVC and aluminium doors are weather tested to strict standards to check they’re up to scratch. So, whatever the great British weather throws at you, your external bifolding doors will be ready!

Installing Bifold Doors

Whilst we provide full instructions on how to fit bifold doors with your product, these are designed to be shared with a qualified tradesperson. You'll need their expert knowledge to avoid damaging or incorrectly fitting your door. You can fit your bifold doors in an existing opening, as well as enlarging if you want to maximise your views. 


Hardware and Fittings

Hardware, fittings, accessories and handles are supplied with your bifold door set. Check the specification of each product to see what’s included. We’ll let you know if you can expect stainless steel, aluminium, silver effect or chrome effect. Take a look at our information centre for tips on bifold door installation, how to paint your bifolding doors and more.

We also stock a range of luxury oak internal bifold doors to help your interior feel bright and spacious. Or why not browse our external doors range to really ramp up the kerb appeal of your home? Take a look at our internal and external French doors too.

Get your new bi folding door from our online range and we'll deliver it right to you. We offer free UK mainland delivery on all orders over £750 too!

Articles & Information

Installing and Replacing External Bifold Door Furniture

Our guide walks you through installing and replacing external bifold door furniture for a stylish entrance.

Timber vs. Aluminium vs. uPVC: Which Material is Best for Bifold Doors

Material matters: Compare timber, aluminum, and uPVC for bifold doors to find the best fit for your home's style and durability.

Bifold Doors To The Conservatory

Create a stunning transition: Explore the beauty of bifold doors connecting your home to the conservatory, bringing light and space together.

Bifold Doors To The Garden

Connect with nature: Discover how bifold doors to the garden seamlessly blend indoor and outdoor living for a refreshing experience.

Which External Bifold Doors Are Best For You?

Find your ideal match: Our guide helps you choose the best external bifold doors to elevate your home's style.

How To Dress Bifold Doors: Curtains Or Blinds?

Dress your doors in style: Explore the options of curtains or blinds for bifold doors to add privacy and elegance to your space.

How To Clean Bifold Doors: A Handy Guide

Maintain the shine: Discover our handy guide on how to clean bifold doors, keeping them looking pristine and inviting.

External Bifold Door Glazing

Discover how glazing options for external bifold doors can increase your home�s energy efficiency and design.

How To Choose The Right External Bifold Doors

Our guide helps you select the right external bifold doors to enhance your home's aesthetic and functionality.

Bifold Doors: How Do They Compare To Other Door Types?

See how bifold doors stack up against other types, offering unique advantages in space-saving and design.

External Bifold Doors: Withstanding The Elements

Learn how external bifold doors are designed to withstand the elements, combining durability with elegant design.

Are External Bifold Doors Secure? All About Bifold Safety And Locking Systems

Security meets style: Uncover the facts about the safety and locking systems of external bifold doors for peace of mind.

Bifold Door Sizing

Get the perfect fit: This guide demystifies bifold door sizing, ensuring you select the right dimensions for a sleek and functional design.

Installing External Bifold Doors

Our guide makes installing external bifold doors simple, enhancing indoor-outdoor flow.

What Are Bifold Doors?

Discover the world of bifold doors: Learn what they are and how they can transform your living space with functionality and flair.

Bifold Doors: Your Frequently Asked Questions – Answered!

Unfold the potential of bifold doors: Get all your questions answered with our comprehensive guide on this versatile door style.

If you have a question which isn't covered by one of our handy guides, why not drop us an email and we'll be happy to assist.

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