Aluminium bifold door pricing is one of the least transparent areas of the glazing market. Most suppliers quote "from £X" without making clear what drives the final number, or they bundle supply and fit so tightly that you can't tell what the door itself costs.
This post covers real 2026 supply prices for Cortizo aluminium bifold doors — the exact formula we use, worked examples, and the honest list of what costs extra.
| Panel count | Opening width range | Starting price (supply) |
|---|---|---|
| 3-panel | 2100 – 3000mm | £1,995 |
| 4-panel | 2800 – 4000mm | £2,660 |
| 5-panel | 3500 – 5000mm | £3,325 |
Starting prices apply when each individual leaf is no wider than 900mm and no taller than 2100mm. These are the most common residential sizes.
The price depends on two things only: the number of panels and the size of each leaf. Colour, folding direction (all-left, all-right, split), and handle colour do not affect the price.
The formula:
| Opening | Panels | Leaf width | Price per leaf | Total |
|---|---|---|---|---|
| 2700 × 2100mm | 3 | 900mm | £665 | £1,995 |
| 3200 × 2100mm | 4 | 800mm | £665 | £2,660 |
| 4000 × 2100mm | 4 | 1000mm | £725 | £2,900 |
| 4500 × 2100mm | 5 | 900mm | £665 | £3,325 |
| 4500 × 2400mm | 5 | 900mm wide, 2400mm tall | £725 | £3,625 |
Check your exact price instantly. Enter your opening width and height in the bifold configurator — it calculates and shows the price in under 10 seconds, no quote needed.
A 4-panel Cortizo bifold from a local installer in the UK typically costs £4,500–£7,500 supply and fit, depending on your location and the installer's margin. The same door supplied direct is £2,660–£2,900 depending on size.
That gap — typically £1,800–£4,500 — is what fitting, site visits, project management, and the installer's markup represent. If you're having a builder on site anyway for an extension or renovation, supply-direct makes straightforward financial sense: your builder installs it, and you've saved more than half the cost of the door.
What you need before ordering supply-only: a confirmed brick-to-brick opening size (width and height), a structural lintel in place (your builder or structural engineer specifies the size), and an installer who can hang bifold doors. Most experienced joiners and glaziers can fit a set in a day.
Not included: fitting, lintel, any structural work, handles for passive leaves (passive leaves use finger pulls only — standard in aluminium bifolds).
Cortizo is a Spanish aluminium systems manufacturer with a UK distribution network. Their bifold profile sits in the mid-to-premium tier of the UK market — above generic Chinese-origin aluminium but priced below Schuco or Reynaers. The thermal performance (U-value with double glazing) is competitive with any domestic-specification bifold on the market at this price point.
For a kitchen-to-garden opening where you want a modern, slim-framed door in Black or Anthracite Grey, it is one of the strongest value options currently available on a supply-only basis in the UK.
Enter your opening size and see a live price instantly. No quote form, no waiting.
3-Panel from £1,995 4-Panel from £2,660 5-Panel from £3,325A 3-panel Cortizo bifold starts from £1,995 supplied. This covers openings from 2100mm to 3000mm wide and up to 2100mm tall. If either leaf dimension exceeds those thresholds, the price moves to £725 per leaf — the maximum for a 3-panel at 3000 × 2400mm is £2,175.
A 4-panel Cortizo bifold starts from £2,660 supplied. This covers openings from 2800mm to 4000mm wide. At 4000mm wide, each leaf is 1000mm — over the 900mm threshold — so the price moves to £725 × 4 = £2,900.
A 5-panel Cortizo bifold starts from £3,325 supplied. Openings range from 3500mm to 5000mm wide. At 4500mm the leaves are 900mm — right at the standard threshold — still £665 per leaf. At 5000mm they are 1000mm, moving to £725 × 5 = £3,625.
No. Black, White, and Anthracite Grey are all the same price. Custom RAL colours are available on request and typically add 2–3 weeks to lead time — contact us for a quote.
The full Cortizo frame, 28mm toughened Low-E double-glazed unit, multi-point locking, handles, standard threshold with sill, and delivery to mainland England and Wales (free over £1,450).
No — Glazing Quoter is supply only. Your builder or glazier installs the door. A structural lintel (specified by your installer or structural engineer) must be in place before delivery.
14 working days from order confirmation. Delivery is free to mainland England and Wales on orders over £1,450.