Stairlifts for Curved, Half-Landing and Spiral Staircases
A stairlift can be made for a curved, half-landing or spiral staircase, but unlike a straight stairlift, it needs a bespoke rail that is measured and manufactured to match your exact stairs. If you’re researching options for a parent whose staircase isn’t a simple straight run, this is likely the question that brought you here: can a stairlift even work on stairs like theirs, and if so, how? The short answer is that almost any staircase shape can be fitted, but the process, cost and waiting time look different from a standard straight installation.
This guide walks through how curved stairlifts navigate corners, whether they can cross a landing, what happens on a spiral staircase, and what to realistically expect from the measuring and manufacturing process. We’ll also cover an alternative worth knowing about for half-landing staircases: fitting two straight stairlifts instead of one continuous curved rail.
Can you get a stairlift for curved stairs?
Yes. Curved stairlifts are made specifically for staircases that bend, turn or change direction, and they are one of the most common types installed in UK homes. Rather than using a standard length of straight rail, a curved stairlift runs on a rail that is custom bent to follow the precise shape of the staircase, including any bends, half-landings or winders (tapered steps that turn a corner). This means the chair can travel continuously from the bottom of the stairs to the top (or between floors) without the user needing to get up and move to a second lift partway through the journey.
Because every curved or turned staircase is a slightly different shape, no two curved rails are identical. This is different from a straight stairlift, where a single rail design can be cut to length and installed relatively quickly. For a parent with a staircase that has even one gentle bend, a curved stairlift is usually the starting point for any quote.
How does a stairlift go round a corner?
A stairlift goes round a corner because its rail is manufactured with a curve, or a series of curves, that exactly matches the angle and geometry of the turn in the staircase. A surveyor visits the home to measure the staircase in detail, recording the width, the pitch of each step, the radius of the bend, and the position of any obstacles such as doorways, radiators or newel posts. Those measurements are then used to fabricate a rail, usually from steel or aluminium, that is bent (or, in some systems, built from jointed sections) so it hugs the exact contour of the stairs.
Once fitted, the carriage itself doesn’t change direction independently; it simply follows the rail. Some curved stairlift chairs also rotate as they travel, including round a bend, and stairlifts typically have a swivel seat at the top of the stairs, so the user can turn to face the landing, away from the drop, when getting on and off. The images below demonstrate this:
Can a stairlift cross a landing?
Yes, a stairlift can cross a landing, and this is one of the most common reasons families need a curved rather than a straight stairlift. Many UK homes have a ‘half-landing’ staircase, where the stairs turn through 90 or 180 degrees at a small landing partway up, rather than running in one uninterrupted flight. A curved rail can be shaped to travel up the first flight, follow the turn across the landing, and continue up the second flight, so the user stays seated for the whole journey.
The rail can also be designed to extend slightly beyond the top or bottom step, so the user can get on or off at a safe distance from the edge of the stairs rather than right beside it. On a half-landing, the rail can also be shaped to run level across the landing before climbing the next flight. Both are standard features of most curved stairlift designs, not unusual extras.
Two straight stairlifts as an alternative for half-landings
For a half-landing staircase, fitting two separate straight stairlifts (one per flight) is often a genuine alternative to a single curved rail, and it’s worth asking your surveyor about. With this option, the user rides the first straight lift to the landing, stands and takes a few steps across the landing, then sits on a second straight stairlift to continue to the top. Because straight rails are a standard, stock item rather than a custom-built product, this approach is typically faster to install and can be less expensive than a single bespoke curved rail. It’s worth bearing in mind that you’ll then have two stairlifts to maintain, and the landing needs enough space for both lifts to park safely with room to walk between them.
The trade-off is that this option only suits someone who can safely stand, balance and walk a short distance unaided across the landing between the two chairs. For a parent with more limited mobility, a fall risk, or difficulty transferring between seats, a single continuous curved stairlift is usually the safer and more comfortable choice, even though it usually costs more and takes longer to arrange. A good surveyor will talk through both routes honestly rather than defaulting to the more expensive option.
What about spiral stairs?
A spiral staircase can usually be fitted with a stairlift, though they are among the most technically demanding staircase shapes to work with. Because a spiral staircase turns continuously and often has narrower treads towards the centre, only certain curved rail designs and narrower chair models are suitable, and the rail must be engineered with particularly tight, continuous curves. Some manufacturers offer slimline or swivel-seat models specifically because they cope better with the confined space and constant rotation of a spiral stair.
Not every spiral staircase can accommodate a stairlift; very tight, narrow, or steep spirals may fall outside of what any manufacturer can safely engineer a rail for. This is something a surveyor needs to assess in person, looking at the width, pitch and radius of the stairs, rather than something that can be judged from photographs or general descriptions alone. Kudos Stairlifts specialises in stairlifts for complex staircases, including spirals. You can watch our spiral stairlift case study video to see one of our installations.
Bespoke rail measurement and how long it takes
A bespoke curved or spiral stairlift rail always starts with a technical survey, and this step cannot be skipped or shortened. A trained surveyor measures the staircase in detail, often using digital measuring tools, to capture the exact width, angle, radius and rise of every section, along with the position of any landings, doorways or fixtures nearby. These measurements are sent to the manufacturer, who fabricates the rail specifically for that staircase; no two curved rails are the same, so nothing can be built or supplied from stock in advance.
This process takes noticeably longer than a straight stairlift. Where a straight rail can sometimes be installed within about a week, curved and spiral rails typically take somewhere in the region of 3-4 weeks from technical survey to installation, depending on the complexity of the staircase and the manufacturer’s production schedule. Installation itself, once the rail arrives, is usually completed in a single day. If timing matters, for example because a parent is due home from hospital, it’s worth raising this early so realistic expectations are set from the outset.
Choosing the right option
There’s no single ‘best’ stairlift for a curved, half-landing or spiral staircase; the right choice depends on the exact shape of the stairs and on your parent’s mobility, balance and confidence transferring between seats. An in-home assessment is the only reliable way to know which stairlift designs are possible and how the different options compare on cost and waiting time. Asking a few straightforward questions during that survey, such as whether a two-lift alternative is available and how long the bespoke rail will realistically take, will help you make a well-informed decision for your parent’s home.
Kudos Stairlifts has been trading for over 15 years, has been endorsed as a Which? Trusted Trader for over 11 years, and is an accredited Stannah and Access BDD dealer – giving you full reassurance that any stairlift solution we recommend is backed by years of accredited experience and expertise. You can discuss your needs with our Client Focus Team, who will be happy to answer any questions or address any concerns you may have.
FAQs
Is a curved stairlift more expensive than a straight one?
Yes, curved stairlifts generally cost more than straight models because each rail is custom-measured and manufactured to fit one specific staircase, rather than being a standard stock item. The exact price depends on the complexity of the bends and landings involved. A home survey and quote will give an accurate, staircase-specific figure rather than a generic estimate.
Can the process be sped up if a stairlift is needed urgently?
Sometimes. If a parent’s homecoming date is fixed, for example after a hospital stay, mention this at the outset so the survey can be prioritised and the manufacturer asked whether the turnaround can be shortened. It isn’t guaranteed, as rail manufacturing depends on production schedules, but raising it early gives you the best chance of a faster fit.
Can a stairlift be fitted on a very narrow staircase?
Often yes, though narrow staircases, particularly narrow spirals, may limit the choice of suitable models. Some manufacturers make slimline or swivel-seat stairlifts designed for tighter spaces. A surveyor needs to measure the staircase in person to confirm which designs will fit.
Will the stairlift block the staircase for other people in the house?
Most modern stairlifts fold away neatly, with the seat, footrest and armrests tucking flat against the rail when not in use. This leaves most of the staircase width clear for others to use the stairs normally. Your surveyor will check how much clear width remains once the stairlift is folded, so you know in advance how easy the stairs will be for everyone else in the household.
Do I need planning permission or building regulations approval for a stairlift?
Domestic stairlifts don’t require planning permission or a building regulations application. You may need approval from a landlord, freeholder or property manager, and if your home is a listed building it’s worth checking with your local council’s conservation officer, as fixings to historic stairs can sometimes need listed building consent. Stairlifts are designed and installed to the safety standard BS EN 81-40, and it’s worth checking that your chosen installer follows it as standard practice.
Can two straight stairlifts be replaced with a single curved one later?
Yes, but it means fitting a completely new bespoke rail rather than adapting the existing straight rails, so it’s rarely cost-effective as a planned upgrade. If a parent’s mobility is likely to decline, it’s worth discussing this with your surveyor, and if helpful an occupational therapist, at the outset so you choose the option that will suit them for longer.
Contact our Client Focus Team today to discuss how a stairlift can improve and protect the quality of life for you and your family.
Choose from a range of industry-leading curved or straight stairlifts, suitable for almost any staircase and expertly installed by our own engineers.
Call us now on 0800 1522400 to arrange your free, no obligation home assessment and quote, or to ask any questions you may have.
