A two-pane aluminium sliding patio door of around three metres typically costs £3,000–£4,500 supplied and fitted. Slim-sightline systems and lift-and-slide gear push it higher; a plain two-pane slider is normally cheaper than a bi-fold of the same width.
| Job | Typical cost |
|---|---|
| Sliding patio door, 2 panes, approx. 3m supplied & fitted | £3,000 – £4,500 |
| Bi-fold door, 3 panes, approx. 3m supplied & fitted | £3,800 – £6,000 |
| French doors, approx. 1.5m supplied & fitted | £1,900 – £2,900 |
Ranges include VAT and installation. Final price depends on size, spec, access and site condition — a survey gives you a fixed number.
Around £3,000–£4,500 supplied and fitted for a standard two-pane set. Slim-sightline and lift-and-slide systems cost more.
At the same width, usually yes — fewer panels and much less hardware. The gap grows as the opening gets wider.
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