Straight vs curved stairlifts: compare the route, not just the chair

Identify the whole staircase journey

A straight flight runs in one direction without a turn or intermediate landing. Curved installations address changes of direction, which might involve winding steps, a quarter landing or a half landing. Stannah's staircase guide uses these distinctions when explaining its range. A staircase does not have to look dramatically curved to raise questions about a curved rail.

Describe where the journey needs to start and finish, rather than counting only the longest flight. If there is another short flight above a landing, mention it. A rail that serves one flight is not automatically a proposal for the entire route. Leave classification to the surveyor when the layout is unclear.

Compare what happens at each end

The rail's endpoint and the chair's parking position are separate details worth seeing on a drawing. Ask where the chair sits when parked, where it stops for getting on or off, and how the seat turns if a swivel is specified. A photograph from another property does not show the clearances in yours.

Doors, radiators and the route through a hallway can matter even on a completely straight flight. Acorn describes a hinged rail option in its product information; this is an example of a feature to discuss, not a universal answer to an obstruction. Ask how any proposed hinge operates and what space it occupies in each position.

• Show which nearby doors need to open fully.
• Ask the surveyor to mark the parked chair and rail endpoints.
• Request an explanation of access past the folded and unfolded equipment.

Ask why this particular route is proposed

The inside and outside of a staircase can produce different rail routes and parking arrangements. Instead of assuming one side is preferable, ask the surveyor to explain the proposal and any alternatives they considered. Record limitations alongside advantages so that another quotation can be assessed against the same brief.

If someone suggests separate lifts for separate flights, do not treat that as merely a cheaper version of a continuous journey. Ask exactly what happens on the intermediate landing and what each proposal does and does not provide. This page does not assess transfers or individual use; raise those questions privately with an appropriately qualified professional.

Understand the specification behind the price

A curved quote may involve a rail designed for the measured staircase. Stannah describes individually manufactured curved rails for its installations. Other systems can differ, so ask how the quoted rail is specified, which parts are new and what changes would require a revised design. Do not assume a second-hand rail from a similar-looking home can be reused.

Compare the chair features separately from the route. Powered folding, powered swivelling, upholstery and controls should be identified by name, not hidden within a model photograph. Request a written explanation if two suppliers propose different features. A lower total is not an equivalent offer when the journeys or included functions differ.

Leave the survey with a usable record

Keep the layout drawing, model details and quotation together. Note any preparation work, permissions still to obtain and assumptions about power supply or access. Ask for installation timing for the actual specification rather than relying on a general fast-installation advertisement.

Your useful outcome is a clearly described route with unanswered questions identified. There is no need to climb, lean over a stairwell or take risky measurements to prepare it. A simple description from a safe position is enough for an initial discussion; accurate measurements and installation assessment belong to the professional survey.