Bifold prices · 2026
Aluminium Bifold Doors Cost UK
Most mainstream bifold systems use aluminium because it provides the stiffness needed for slim multi-panel frames. The main price drivers are opening width, panel count and whether structural work is needed around the opening.
Quick price answer: Our fitted model gives £2,723–£4,841 for a medium three-panel aluminium bifold, £3,444–£5,387 for a roughly 3.3 m four-panel example and £4,209–£6,583 for a roughly 4.2 m five-panel example.
Aluminium bifold price examples
Panel count and width rise together in these examples.
Figures are modelled UK-average fitted-market estimates from the Window Price Calculator engine, using its 24 September 2026 research refresh. They include ordinary removal, standard fitting, basic making good and VAT; scaffolding, hidden structural repairs and highly bespoke work can sit outside the range.
What makes a bifold quote jump?
The door itself is only one part of a large-opening project.
Panel count and width
More panels mean more aluminium profiles, hinges, rollers, glass and adjustment. Width also increases the size and weight of each unit.
Opening work
A replacement into an existing bifold opening is very different from removing a wall and installing structural steel. Keep building work separate when comparing door prices.
Useful bifold quote checks
Ask installers to make the scope explicit so quotations are genuinely comparable.
- Number of panels and approximate structural opening width.
- Threshold type and drainage requirements.
- Colour finish and whether it is a standard aluminium colour.
- Glass specification and any integrated blinds.
- Whether structural alteration, plastering or flooring work is included.
Use your own project
Start a replacement estimate.
Use the calculator to price a complete replacement window or door. Choose the closest product and project size and we’ll carry those choices into the full calculator.
Rough sizes are fine. The full personalised result is unlocked after the £2.99 checkout.Related price guides
Use the closest related guide to compare another specification or project type.
Questions people ask
How much do aluminium bifold doors cost?
Our current model starts around £2,723–£4,841 for a medium three-panel fitted system and rises with width and panel count.
How much are 4-panel bifold doors?
The modelled 4-panel example at roughly 3.3 m wide is £3,444–£5,387.
How much are 5-panel bifold doors?
The modelled 5-panel example at roughly 4.2 m wide is £4,209–£6,583 before unusual structural work.
Set the panel count and opening size yourself.
The full calculator lets you choose the approximate bifold size, panel count and opening-work scenario.
Start my estimate · £2.99