Doors
Stable doors
A stable door splits horizontally so the top half opens independently of the bottom. Fitted, expect roughly £1,000 to £2,400. They suit kitchens and rural properties where you want ventilation and light while keeping children or dogs inside.
Stable doors are a practical answer to a specific problem rather than a style choice: letting air and light in through a door you cannot leave standing open.
Indicative guide, not a quote
per door, supplied and fitted
£900 – £2,350
These figures come from published industry price guides, not official statistics, and several of those sources are installers or comparison sites with a commercial interest. They are a starting point for a conversation, not a quote. Your installer sets the actual price after measuring.
Expertsure composite door cost guide · checked 2026-10-09
How the two halves work together
The leaves are joined by a latch so the door operates as a single unit when you want it to, and separate when you release it. The top can stand open for ventilation while the bottom stays locked.
The quality of that joining mechanism is what separates a good stable door from a frustrating one. A worn latch means the two halves stop aligning, and then the whole door stops locking cleanly.
Where they earn their place
Kitchens that get hot and have no other outside door. Houses with small children or dogs where you want air without an open doorway. Rural and semi-rural properties where the back door opens onto a yard.
They are less useful on an exposed elevation, where an open top half admits weather, and on a very narrow opening, where splitting the door leaves two awkwardly small leaves.
Security of a split door
A split door has more edges and more hardware than a single leaf, so the specification needs to account for it: locking on both halves, a solid centre latch, and a frame fixed well enough to take the extra hardware.
Composite stable doors are common because the solid core gives both halves enough rigidity to stay true, which a lighter panel may not.
Stable doors: common questions
- Are stable doors less secure than a normal door?
- Not inherently, but they have more hardware to specify correctly. Look for locking on both leaves and a robust centre latch, and confirm the doorset is PAS 24 tested.
- Can you get uPVC stable doors?
- Yes, though composite is more common because the solid core keeps both halves rigid. A lighter panel split in two is more likely to distort over time.
- Do stable doors leak when the top is closed?
- A correctly specified one does not. The centre joint needs a proper weatherseal and drainage, and that detail is worth asking about specifically.
Other doors
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Front doors
£900 – £2,350 fitted
A new front door costs £700 to £2,800 fitted. Composite, uPVC, aluminium and timber compared, and why the lock matters more than the door.
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Composite doors
£900 – £2,350 fitted
Composite doors cost £900 to £2,350 fitted. Solid timber core versus foam, what thickness to ask for, and the security specification worth insisting on.
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uPVC doors
£700 – £1,400 fitted
uPVC doors cost £700 to £1,400 fitted. Where they make sense, why cheap ones drop on their hinges, and the cylinder upgrade worth paying for.
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Aluminium doors
£1,400 – £2,800 fitted
Aluminium doors cost £1,400 to £2,800 fitted. Why the material handles tall, heavily glazed doors, and how to match it across the house.
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Bi-fold doors
£3,000 – £7,500 fitted
Aluminium bi-fold doors cost £3,000 to £7,500 fitted. Panel counts, why you need a traffic door, and how they compare with sliding doors.
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Sliding patio doors
£1,500 – £4,000 fitted
Sliding patio doors cost £1,500 to £4,000 fitted. Bigger panes than bi-folds, no lost space, and why lift-and-slide changes how they feel.
TrustedGlazing does not make, supply or fit windows and doors, and the prices above are published industry guides rather than our own. We match your enquiry to one vetted local installer, who quotes and contracts with you directly.