Are you curious about the price of bi-fold doors in the UK? Our comprehensive 2025 reference includes average costs, cost-influencing variables, installation costs, and money-saving advice for bi-fold door purchases.
1. Introduction
Connecting your indoor and outdoor living spaces with bi-fold doors is a chic, practical, and contemporary solution. However, it's crucial to know the entire cost before making a purchase, including the cost of the doors, installation, and any extra features you might desire.
This blog will examine the precise cost of bi-fold doors in the UK in 2025 and offer helpful guidance for homeowners wishing to make prudent investments.
2. What Are Bi-Fold Doors?
Multi-panel doors that glide along a track and fold in on themselves are called bi-fold doors. They open completely, in contrast to conventional sliding patio doors, providing easy access to your patio, balcony, or garden.
They’re typically used for:
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Rear extensions
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Conservatories or orangeries
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Open-plan kitchen diners
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Balconies or Juliet balconies
3. Why Are Bi-Fold Doors So Popular?
Bi-fold doors have grown in popularity thanks to:
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Modern aesthetic appeal
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Maximising natural light
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Flexible opening configurations
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Indoor/outdoor lifestyle trend
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Energy-efficient glazing options
They’ve become a sought-after feature in many UK property renovations and extensions.
4. Average Cost of Bi-Fold Doors in the UK (2025)
Here’s a quick summary of average bi-fold door costs in the UK for 2025:
| Type | Average Cost (Supply Only) | Average Installed Cost |
|---|---|---|
| Aluminium (3m) | £2,500 – £4,000 | £3,500 – £5,500 |
| uPVC (3m) | £1,500 – £2,500 | £2,500 – £4,000 |
| Timber (3m) | £3,000 – £5,000 | £4,500 – £6,500 |
| Custom/Bespoke | From £5,000+ | From £6,500+ |
These prices are indicative and will vary depending on the supplier, customisation, and location.
5. Price Breakdown by Material
5.1 Aluminium Bi-Fold Doors
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Pros: Sleek profile, strong, durable, low maintenance
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Cons: More expensive
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Average Cost (3m): £2,500 – £4,000
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Popular Brands: Origin, Smart, Schüco
5.2 uPVC Bi-Fold Doors
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Pros: Affordable, low maintenance
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Cons: Bulkier frames, less durable than aluminium
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Average Cost (3m): £1,500 – £2,500
5.3 Timber Bi-Fold Doors
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Pros: Natural look, ideal for traditional homes
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Cons: High maintenance, expensive
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Average Cost (3m): £3,000 – £5,000
6. Bi-Fold Door Costs by Size
Bi-fold doors are typically priced by width and the number of panels.
| Width (Meters) | Panels | Average Supply Cost (Aluminium) |
|---|---|---|
| 1.8m | 2 | £1,600 – £2,400 |
| 2.4m | 3 | £2,200 – £3,500 |
| 3.0m | 4 | £2,500 – £4,000 |
| 4.0m | 5 | £3,500 – £5,500 |
| 6.0m | 6 | £4,500 – £7,500 |
7. Additional Cost Factors to Consider
When budgeting, don't forget these extras:
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Coloured or textured frame finishes
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Integral blinds between the glass
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Low threshold sills
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Triple glazing upgrades
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Security features (multi-point locks)
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Trickle vents (required by Building Regs)
All of these features can add £500–£2,000+ to your total bill.
8. Installation Costs Explained
Professional installation is usually necessary and can vary by location and complexity.
Average Labour Cost (Supply & Fit):
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Basic installation: £1,000 – £1,500
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Complex installations (e.g. steel lintel required): £2,000 – £3,500+
What’s Included:
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Removing old doors/windows
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Structural adjustments
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Fitting the new frame
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Finishing internal plasterwork
9. Double vs Triple Glazing: Price & Efficiency
Double Glazing
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Standard option
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Good thermal performance (U-values of ~1.2 W/m²K)
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Lower cost
Triple Glazing
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Better insulation (U-values of ~0.8 W/m²K)
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Improved noise reduction
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Adds £500–£1,000 extra
If you're aiming for a Passivhaus-standard home, triple glazing may be worth the investment.
10. Aluminium vs uPVC vs Timber: What’s Worth It?
| Feature | Aluminium | uPVC | Timber |
|---|---|---|---|
| Durability | ★★★★★ | ★★★ | ★★★★ |
| Style | ★★★★★ | ★★★ | ★★★★★ |
| Maintenance | ★★★★★ | ★★★★★ | ★★ |
| Insulation | ★★★★ | ★★★★ | ★★★★ |
| Price | ★★★ | ★★★★★ | ★★ |
Verdict: Aluminium offers the best value for performance and looks.
11. DIY or Professional Installation?
Bi-fold door installation is not a common do-it-yourself task. Long-term issues may arise from problems with weatherproofing, levelling, or locking the entrance.
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DIY only recommended if you're highly experienced
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Professional installation recommended for warranty and compliance
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Check for FENSA/CERTASS registration
12. Planning Permission and Building Regulations
You don’t usually need planning permission for bi-fold doors in the UK unless:
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Your property is listed
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You live in a conservation area
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You’re making structural changes beyond Permitted Development
You must comply with Building Regulations, particularly in:
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Thermal performance (Part L)
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Safety glazing (Part K)
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Ventilation (Part F)
13. Cost of Maintenance Over Time
Aluminium:
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Low maintenance
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Occasional clean and lubrication
uPVC:
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Can discolour over time
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Needs occasional re-sealing
Timber:
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Needs sanding and repainting every 3–5 years
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Susceptible to warping if neglected
14. Tips to Reduce the Cost of Bi-Fold Doors
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Compare at least 3 quotes
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Buy during off-peak seasons (autumn/winter)
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Choose standard sizes to avoid custom fees
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Opt for double glazing instead of triple
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Look for trade discounts or showroom ex-display units
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Use government incentives (if available)
15. FAQs About Bi-Fold Door Pricing
Q: Are bi-fold doors more expensive than sliding doors?
A: Yes, slightly. Sliding doors are usually 10–20% cheaper but don’t open as wide.
Q: Do bi-fold doors add value to a home?
A: Yes, they enhance both appeal and functionality, especially in open-plan extensions.
Q: How long do bi-fold doors last?
A: Aluminium: 30–40 years. uPVC: 15–25 years. Timber: 20–30 years with care.
Q: Can I get finance for bi-fold doors?
A: Many companies now offer financing or buy-now-pay-later options.
16. Final Thoughts
For homeowners who want to create flexible, light-filled areas, bi-fold doors are a great investment. Even though they can be pricey, knowing the prices up front enables you to make an informed decision that fits your house and budget.
There is a bi-fold door option to suit your demands, whether you want to improve access to your yard or create a striking architectural element.
For more information about our interior or exterior doors or door accessories, give us a call at 01603 622261 and speak to a member of our expert team today, or Email us at sales@doorsuppliesonline.co.uk. We look forward to hearing from you.