Bi fold doors cost refers to the total expenditure required for purchasing and installing folding door systems that consist of multiple panels folding inwards or outwards along a track. In the UK, this price is shaped by key factors such as material type (aluminium, timber, or uPVC), number of panels, door size, glazing specification, and installation complexity. As demand for open-plan living and seamless indoor-outdoor transitions continues to grow, external bi fold doors have become a sought-after architectural feature, particularly for garden access, patio openings, and kitchen extensions.
According to 2025 market data from FENSA-registered installers, the average cost of external bi fold doors in the UK ranges from £1,200 for basic 2-panel uPVC models to over £6,000 for large-scale, thermally broken aluminium systems with triple glazing. Internal bi fold doors, by contrast, generally cost between £400–£1,000, depending on finishes and door furniture.
- Factors That Affect Bi Folding Doors Cost
- Installation Costs & Labour Charges in the UK
- Bi-Fold Door Cost Calculator for the UK
- What Is the Best Material for Bi-Fold Doors?
- Are Bi-Folding Doors Worth the Investment?
- Alternatives to Bi-Folding Doors
- How to Choose the Right Bi-Folding Doors
- Conclusion: Get the Best Value for Your Investment
- FAQs
“Investing in high-performance bi fold doors can significantly boost property value and thermal performance, especially in energy-conscious renovations,” explains Sarah Millar, technical advisor at the Glass and Glazing Federation (GGF).
This guide serves as a comprehensive cost overview, enabling homeowners to understand the true cost drivers behind bi fold doors cost in 2025. From compact internal room dividers to expansive external bi fold doors, the guide evaluates the financial implications of material choice, panel configuration, and fitting, allowing for more accurate budgeting and informed product selection.
Factors That Affect Bi Folding Doors Cost
To fully grasp the pricing of bi-fold doors, it is important to delve into some of their critical key drivers. Everything from the material chosen to the number of panels and type of glaze chosen affects the door’s price. For the best results, working with a professional installer ensures precision and long-term durability. Highlighted below are the primary cost drivers for these doors.
1. Material Selection
The materials used to make your bi folding doors have a direct impact on your doors’ durability, maintenance, thermal efficiency, and doors’ cost. Making a proper choice in this case guarantees value in the long term and helps with your design needs.
Aluminum (£2000 – £6000) – An attractive contemporary option that is premium, incredibly tough, and requires little maintenance.
uPVC (£1,200 – £3,500) – This option is budget-friendly, although less effective compared to other materials; often referred to as an upvc bifold.
Composite (£3,500 – £7,500) – A mix of wood and aluminium providing an overall appealing design without compromising strength.
For those prioritizing energy efficiency, exploring FENSA-certified installers ensures compliance with UK building regulations, offering peace of mind with quality installation.
You may also consider alternatives like elegant French doors for a classic touch or modern pivot doors if you’re looking for a bold statement design.
2. Size and Configuration
The price of the bi-folding doors increase with size and the panel configuration. More materials are needed for larger doors, as is extensive skilled labor for installation.
| Size (Panels) | Price Range |
| 2-panel | £1,500 – £3,000 |
| 3-panel | £2,000 – £4,500 |
| 4-panel | £3,000 – £6,000 |
| 6-panel | £5,000 – £9,000 |
For instance, a 3m bifold doors cost around £4,000 for a standard new 4-panel aluminium set. Larger openings lead to higher costs but can offer dramatic indoor-outdoor flow.
3. Glazing Options
Glazing is important for improving your doors overall appeal, energy efficiency, and security. Choosing the incorrect glazing can make the living environment uncomfortable and increase energy bills.
Double glazing (Standard) – Insulation and security are greatly improved (£200 – £500 extra).
Triple glazing – Improves thermal efficiency as well as minimises noise pollution (£400 – £1,000 extra).
Laminated or toughened glass – Greatly improves security (£300 – £800 extra).
Solar control glass – Helps reduce glare as well as heat from the sun (£250 – £600 extra).
4. Finishing and Colour Customization
The aesthetics of your bi-fold doors are significantly impacted by their finish, as well as the level maintenance they will require. Standard RAL colors are available at no extra cost, but custom styles including metallic, wood grain, and dual color finishes will increase the price by 10-30% of the total cost.
5. Hardware and Security Features
The cost of the bi-fold doors will vary depending on your selection of hardware, locking systems, and any additional security features. Prioritizing the quality of the selected hardware will ensure smooth functionality, in addition to enhanced home security.
Multi-point locking systems- These are a must for security and add between £200- £500.
Smart locks and automation- Adds extra £300- £1500.
Installation Costs & Labour Charges in the UK
In addition to the cost of the doors themselves, another important factor to consider is the installation price. Just like with the cost of bifold doors and installation, the total expense isn’t complete without professional fitting — which ensures the doors operate smoothly, maintain structural integrity, and comply with current regulations.
Average Labour Costs
Labour charges vary depending on the complexity of the installation and location. Below is a general pricing guide:
| Installation Type | Estimated Cost |
| Standard installation | £400 – £1,200 |
| Structural modifications (e.g., removing a wall) | £500 – £2,000 |
| Steel support beams (if required) | £800 – £2,500 |
Key Factors Affecting Labour Costs
A number of factors can incur additional expenses regarding the installation costs. These include, but are not limited to:
Structural Changes – If structural support is required for a wider opening or lintel replacement, this can significantly increase total labour costs.
Region – Costs are often higher in London and the South East of England, particularly for larger or more complex installations like an external bifold door system.
Easement – Additional charges may be incurred for difficult access points, such as second floors or narrow hallways, which is especially relevant when fitting internal bi folding doors in tighter interior spaces.
Bi-Fold Door Cost Calculator for the UK
For a better idea of the bi fold doors UK cost, explore our pricing guide or get in touch for a personalised free quote based on your specific requirements.
In order to get the most accurate estimate of your total costs, don’t forget to include the materials, installation, glazing, and any other custom work needed. In some cases, homeowners may prefer options like smooth sliding doors as a sleek alternative to bifolds, especially where space constraints apply.
Sample Estimate
Estimated cost of a Bi-Fold Door including standard fitting, double glazed windows and aluminum with three panes.
- Door costs: £3,500
- Labour costs: £900
- Cost for double glazing: £400
- Total estimate: £4,800
Although this rough estimate can be inaccurate, accuracy can be ensured if a professional quote is issued.
What Is the Best Material for Bi-Fold Doors?
Choosing the best material depends on your budget, design preferences, and maintenance expectations. Below is a quick comparison of the most common materials.
| Feature | Aluminium | uPVC | Timber | Composite |
| Durability | ★★★★★ | ★★★ | ★★★★ | ★★★★★ |
| Energy Efficiency | ★★★★ | ★★★★ | ★★★★ | ★★★★★ |
| Maintenance | Low | Medium | High | Low |
| Aesthetic Appeal | Modern | Basic | Classic | Versatile |
| Average Price | High | Low | High | Medium |
For long-term durability and sleek aesthetics, aluminium is the best choice. For a cost-effective solution, upvc is a budget-friendly option.
Are Bi-Folding Doors Worth the Investment?
Investing with purpose can significantly enhance your living standards. Bi-folding doors are not an exception—they offer striking aesthetics and low maintenance. Seek free consultation and shop around—get at least three quotes from reputable suppliers to ensure the best value. Quality materials and professional installation almost always pay dividends in time and durability.
🔹 Key Takeaways:
- Aluminium bifold doors are durable and modern but cost more.
- Installation costs vary based on complexity and location.
- Always get multiple quotes to find the best deal.
If you’re considering installing bifold doors, consult a professional to get an accurate quote tailored to your home’s needs. Need more information? Contact us for expert advice on bifold door pricing and installation.
Bifold Doors Price Comparison
When comparing bifold doors prices, it’s crucial to consider the materials, glazing options, and installation costs. Our bifold doors price comparison tool can help you find the best deals.
Alternatives to Bi-Folding Doors
If bi-fold doors don’t suit your needs, here are some alternatives:
- Sliding doors – Ideal for maximizing glass space and maintaining a minimalistic look.
- French doors – A classic option for smaller openings.
- Pivot doors – A modern alternative that offers a unique design.
- Concertina doors – A more affordable alternative, typically costing less than bifold doors, with prices ranging from £1,000 to £3,500 depending on size and configuration.
- Glass doors – Offer floor-to-ceiling brightness with frameless or slimline styles.
How to Choose the Right Bi-Folding Doors
To make an informed purchase, consider these factors:
- Budget – Determine a price range that includes installation and upgrades.
- Material and style – Choose based on durability, aesthetics, and maintenance.
- Energy efficiency – Opt for glazing that reduces energy costs.
- Supplier reputation – Work with reputable brands offering warranties and after-sales support.Composite (£3,500 – £7,500) – A mix of wood and aluminium, providing an appealing design without compromising strength.
Conclusion: Get the Best Value for Your Investment
Investing in bi-folding doors increases the value, energy efficiency, and appearance of your property, making it a smart purchase. Even though the price depends on several factors including materials, glazing, and labor, having a well thought out plan will guarantee long-term returns.
To get the best price you will need to collaborate with a reputable supplier and evaluate different possibilities which will be best suited for your needs.