Last Updated on 16 April 2025 by Josh Lucas
Welcome to your one-stop guide for everything you need to know about folding doors.
Whether you’re dreaming of open-plan living, extra light, or that sleek indoor-outdoor flow, folding doors might be your perfect fit. In this article, we’re folding out all the info: benefits, styles, where to use them, and how to choose the right ones for your home.
So, why are folding doors making such a big impact in UK homes? It’s simple: they combine modern design with unmatched versatility.
Whether you’re working on a home renovation, planning a new extension, or tackling your first self-build project, folding doors can completely change how your space feels and functions.
From stylish aluminium frames that barely interrupt your view to thermally efficient glass that keeps the warmth in, these aren’t just doors — they’re a lifestyle upgrade.
Let’s unfold the benefits, explore the options, and guide you through every step.
Quick Look: What We’ll Cover
- What are folding doors and how do they compare?
- Key benefits of bi fold doors
- Where they work best in your home
- Comparing styles: Korniche vs Smart vs Heritage
- What to look out for before buying
- FAQs answered
What Are Folding Doors (Bi Fold Doors)?
Folding doors, also known as bi fold doors, are made up of connected panels that fold and slide neatly to one side (or both), opening up large wall spaces and connecting indoor and outdoor areas effortlessly.
How do they compare?
- French Doors swing open and require the most space to operate. They’re best for traditional aesthetics and smaller openings.
- Sliding Doors move horizontally along a track and stack behind a fixed panel. They offer a sleek look and unobstructed views but only partially open.
- Folding Doors fold and slide to one or both sides, allowing the widest opening possible. They provide maximum flexibility and are perfect for creating seamless indoor-outdoor transitions.
Why Choose Folding Doors?
1. Stylish Meets Practical
Folding doors give your home that designer magazine look and practical benefits. They open up entire walls, making rooms feel brighter, bigger, and better connected to the outdoors.
2. Natural Light Galore
With their slimline frames and expansive glazing (especially with Korniche), folding doors flood rooms with daylight and frame garden views like a picture.
3. Save Space, Gain Flexibility
They fold away neatly, meaning you don’t need to allow for swing space. Perfect for tight patios, extensions, or smaller gardens.
4. Tailored to Your Life
Need a traffic door for everyday use? Prefer a central split or a full slide-left option? Configurations are super flexible with 1-7 panels and open-in or out options.
Where Do Folding Doors Work Best?
✨ The Open-Plan Entertainer
Install in a kitchen-diner and open up to a patio. Host parties where guests drift between indoors and out.
☕ The Family Sunroom Fix
In sunrooms or orangeries, bi fold doors add light, warmth, and the ability to truly open up in summer.
🏡 The Space-Conscious Renovator
Using them in smaller living spaces or garden rooms instantly makes rooms feel airier and more luxurious.
🏠 The Interior Stylist
Yes, folding doors also work inside – use them to separate open-plan zones like dining rooms and home offices while keeping light flowing.
Comparing GFD Homes Folding Door Ranges
Korniche Aluminium Bi Fold Doors
- Ultra-slim sightlines for uninterrupted views
- PAS24 certified for top-tier security
- Pre-assembled kits make DIY easier
- U-value as low as 1.5 W/m²K
- Ideal for premium, energy-conscious homes
Smart Visofold Bi Fold Doors
- Flexible internal/external folding options
- Great all-rounder for families and builders
- Thermal break and PAS24 security
- Wide colour and hardware options
Smart Heritage (Industrial Style) Bi Fold Doors
- Period-perfect steel-look with modern performance
- 94mm sightlines and thermally broken frames
- Ideal for Victorian, Art Deco or industrial-style homes
Comparison at a Glance
| Feature | Korniche | Smart Visofold | Smart Heritage |
| Sightline Width | 45mm (ultra) | 132mm | 94mm |
| Max Sash Width | 1250mm | 1200mm | 1000mm |
| Best For | Modern homes | Versatile uses | Heritage styles |
| U-Value | 1.5 W/m²K | 1.5 W/m²K | 1.5 W/m²K |
| PAS24 Security | Yes | Yes | Yes |
What to Look Out For When Buying Folding Doors
Here’s your go-to checklist before making the call:
- ✅ PAS 24 Certification: Enhanced security guaranteed
- ✅ Flexible Configurations: Does it suit your space?
- ✅ Sightlines: Slimmer = sleeker
- ✅ Threshold Options: Standard or low profile?
- ✅ Colours & Finishes: Do they match your vibe?
Ready to Transform Your Space? Let’s Make It Happen
Whether you’re looking for maximum natural light, seamless garden access, or just that extra ‘wow’ factor—folding doors deliver.
With sleek aluminium designs, outstanding thermal performance, and a range of styles to match any home, they’re more than just doors—they’re an upgrade to your everyday living.
Have questions or ready to take the plunge?
Call our expert team on 01642 309 576 or get an instant quote online at GFD Homes. We’re here to help you make the right choice, no stress, no pushy sales—just honest, helpful guidance from our family to yours.
Frequently Asked Questions
Do I need planning permission for bifold doors?
In most cases, no, especially for rear installations under permitted development. Check with your local planning office if you’re unsure.
How to stop bifold doors blowing in the wind?
Use magnetic catches, door restrictors, or fully lock the traffic door when open. Our systems include these features as standard.
What blinds are best for bifold doors?
Go for integral blinds. They move with the door panels and won’t get in the way.
Are bifold doors cold?
Not if you choose thermally broken aluminium systems with sealed units. Our Korniche doors have U-values as low as 1.5 W/m²K.
What’s Next?
- Blinds for Patio Doors: The Sleekest Way to Style & Simplify Your Space
- How to Design the Perfect Kitchen Extension with Bifold Doors
- Can You Replace Patio Doors with Bifold Doors? Everything You Need To Know
- Changes to Building Regulations for Windows & Doors as of June 2022
Trade Doors Folding Doors: Looking for trade prices? Check out our trade site The Trade Village
