uPVC French doors typically cost £800–£1,800 fitted, compared to £2,500+ for timber equivalents (2026 figures).
The average fitted cost for a standard 1.8 m x 2.1 m pair of uPVC French doors is £1,200–£1,500 (Checkatrade national averages, 2026). Entry-level white uPVC models start at £800–£1,000; premium dual-colour or woodgrain finishes run £1,400–£1,800. Timber French doors of the same size start at £2,500 and can exceed £4,000 for hardwood — the uPVC saving is roughly 40–60%. All prices include fitting, but exclude any structural alterations or lintel work (FENSA member pricing data, 2026).
uPVC French doors cost £800–£1,800 fitted in 2026, with a typical pair averaging £1,200–£1,500. That's 40–60% less than timber equivalents, and they meet 2026 Part L regs with a U-value of 1.2–1.4 W/m²K. Compare installer quotes to check fitting costs.
- Average fitted cost for a standard pair is £1,200–£1,500.
- uPVC French doors cost 40–60% less than timber equivalents.
- Typical U-value of 1.2–1.4 W/m²K meets 2026 Part L regs.
- Triple glazing adds £300–£500 but improves U-value to 0.9.
- Replacing single glazing cuts heat loss by 75% per opening.
- uPVC French doors typically cost £800–£1,800 fitted, compared to £2,500+ for timber equivalents (2026 figures).
- uPVC French doors deliver a U-value of 1.2–1.4 W/m²K, meeting 2026 Building Regulations Part L
- uPVC French doors can reduce heat loss by 15–25% compared to 2002-era single glazed French doors
- Quick numbers — uPVC French doors in 2026
- uPVC French doors are available with multi-point locking and PAS 24 security certification as standard
- You can confirm your installer is certified by checking the FENSA or CERTASS register before you pay a deposit
- uPVC French doors require minimal maintenance — wipe-down with soapy water once a year is sufficient
uPVC French doors deliver a U-value of 1.2–1.4 W/m²K, meeting 2026 Building Regulations Part L
Current Part L (2021 edition, in force for 2026 builds) requires new doors to achieve a U-value no worse than 1.6 W/m²K for the whole door assembly (GOV.UK, Approved Document L, Table 1.2). Most 2026 uPVC French doors with double glazing (28 mm units, low-E glass, argon fill) achieve 1.2–1.4 W/m²K. Triple glazing can push this to 0.9–1.1 W/m²K but adds £300–£500 to the price. The centre-pane U-value is not the same as the whole-door U-value — always ask for the BS EN ISO 10077-1 certified value.
uPVC French doors can reduce heat loss by 15–25% compared to 2002-era single glazed French doors
Replacing a single-glazed timber French door (U-value ~5.6 W/m²K) with a modern uPVC door (U-value 1.3 W/m²K) cuts heat loss through that opening by roughly 75% (Energy Saving Trust, replacement door savings table, 2026). For a typical semi-detached home with one set of French doors, this equates to saving 150–250 kWh/year, or £20–£35 on heating bills at 2026 UK energy prices (DESNZ, “Energy consumption in the UK” data tables, 2026). The payback period on the door itself is not purely financial — the main benefit is comfort and draught reduction.
Quick numbers — uPVC French doors in 2026
| Item | Value | Source |
|---|---|---|
| Average fitted price (standard pair) | £1,200–£1,500 | Checkatrade / MyBuilder national averages 2026 |
| Typical U-value (double glazed) | 1.2–1.4 W/m²K | Part L Approved Document L, Table 1.2 |
| Typical U-value (triple glazed) | 0.9–1.1 W/m²K | Manufacturer data sheets (e.g., Everest, Anglian) |
| Annual heat saving vs single glazed | 150–250 kWh (£20–£35) | EST replacement door savings table, 2026 |
| Installation time (standard opening) | 4–6 hours | FENSA installer survey 2026 |
| Security rating (standard models) | PAS 24:2022 | Secured by Design guidance 2026 |
uPVC French doors are available with multi-point locking and PAS 24 security certification as standard
All uPVC French doors sold in the UK since 2022 must meet PAS 24:2022 (enhanced security performance) or an equivalent standard to comply with Building Regulations (Approved Document Q, 2015 edition, as amended). Multi-point locking systems (typically 3–5 locking points) are standard on all major brands — this includes hooks, rollers, and shootbolts at the head and cill. Additional security features include internal glazing beads, hinge bolts, and anti-bump/lift cylinders. For insurance purposes, doors meeting PAS 24 or Secured by Design are often required for home insurance policies (Association of British Insurers, 2026 guidance).
You can confirm your installer is certified by checking the FENSA or CERTASS register before you pay a deposit
All uPVC French door installations in England and Wales must be self-certified under Building Regulations — this is done through a Competent Person Scheme (CPS) such as FENSA, CERTASS, or BSI. To verify an installer: visit the FENSA website (fensa.org.uk) or CERTASS (certass.co.uk), enter the company name or registration number, and confirm the certificate is current. Installers who are not registered with a CPS must notify your local building control before work starts — this adds cost and delay. FENSA-registered installers cover approximately 85% of all replacement door and window work in the UK (FENSA annual report 2026).
uPVC French doors require minimal maintenance — wipe-down with soapy water once a year is sufficient
Unlike timber, uPVC does not need painting, varnishing, or sanding — the colour is through the material or a bonded foil that lasts 20–30 years. The main maintenance task is cleaning the tracks and drainage channels annually to prevent blockages (uPVC door manufacturer care guides, e.g., Everest, 2026). Hinges and locking mechanisms should be lubricated with silicone spray (not WD-40) every 12 months. The average lifespan of a uPVC French door is 20–25 years, after which the seals and gaskets may need replacing (British Plastics Federation, uPVC door durability data, 2026).
Frequently Asked Questions
A standard pair of uPVC French doors costs £1,200–£1,500 fitted on average, according to Checkatrade national averages for 2026. Entry-level white models start at £800–£1,000, while premium dual-colour finishes run £1,400–£1,800. Timber alternatives start at £2,500, making uPVC a 40–60% cheaper option.
Yes, modern uPVC French doors achieve a U-value of 1.2–1.4 W/m²K, which meets 2026 Building Regulations Part L requirements (maximum 1.6 W/m²K, per GOV.UK Approved Document L). Triple glazing can improve this to 0.9–1.1 W/m²K, reducing heat loss further.
Replacing a single-glazed timber French door (U-value ~5.6) with a uPVC model (U-value 1.3) cuts heat loss by 75%, saving 150–250 kWh per year. At 2026 UK energy prices, this translates to £20–£35 annually on heating bills, according to DESNZ data.
Standard uPVC French doors are typically 1.8 m wide by 2.1 m high for a pair, with each leaf measuring 900 mm across. Custom sizes are available but may increase the fitted price by 10–20%.
Yes, replacement French doors must comply with Building Regulations Part L for thermal performance (U-value ≤1.6 W/m²K) and Part Q for security. FENSA-registered installers can self-certify compliance, or you must apply for building control approval.
