Curved Stairs
CURVED STAIRCASE · ROLLED STRINGER · FOYER SWEEP
a modern curved staircase as the sweep you see from the front door
Walk through the front door. The stair is the first arc you see. A custom curved staircase follows one radius across the foyer. There is no center column.
We roll a steel stringer to that radius and return shop drawings. After you sign off, we trial-assemble the flight and ship a labelled flat-pack. Your local contractor installs it.
Custom curved stairs are not a catalog pick. Some plans call the same flight a helical staircase. That still means a wide foyer sweep, not a spiral around a pole. Your contractor can send the floor plan with the brief.
Shop drawings · factory quote
Send floor opening and rise. We reply with shop drawings.
VILLA & COUNTRY HOME
A villa foyer wants the stair to read as the arrival. Twin flights to a center landing make a double sweep. A single arc reads quieter.
Villa owners planning a foyer sweep often pair hardwood treads with glass. Wrought iron or a hardwood-clad stringer suits a traditional hall. Cable infill is a common pairing.
NEW HOME BUILD
The foyer width is often locked before the slab is poured. That width sets the radius. The floor opening sets the rise.
Send the floor plan. We draw the sweep to that geometry. Treads follow the arc in hardwood, stone-cap, or steel plate.
APARTMENT & CONDO
A townhouse or condo entry often has a tight corner rather than a grand hall. We draw a small-radius sweep to that opening.
Rolled-stringer sections often pass through a standard interior door. Hardwood treads warm the entry. Glass or stainless reads lighter on a compact landing.
BATCH RENOVATION & MULTI-UNIT DEVELOPMENT
When several entries share one radius, we draw one template and repeat it.
That package is a factory flat-pack to one drawing, not a retail DIY kit. The same tread profile and stringer radius land in each hall.
The Sweep Is Not a Spiral
A spiral climbs around a center column inside a circle. See spiral stairs. Curved stairs have no pole. The stringer is the curve.
Some drawings call this a helical staircase. The staircase curve is still that rolled radius, not a helix on a pole.
If the floor plan wants a single run with no arc, see straight stairs. Weather-finished outdoor runs live on the outdoor stairs page. As curved staircase manufacturers, we roll the stringer in Guangdong, then trial-assemble before packing.
Single Sweep, Double Sweep, or a Hidden Stringer
| Product | Material | Style | Typical use |
|---|---|---|---|
| Single-sweep staircase | Rolled-steel stringer + hardwood treads | One radius across the foyer | Villa foyers, new-home entries |
| Double-sweep staircase | Twin rolled stringers + radius treads | Mirrored pair to a landing | Villa center halls |
| Hidden-stringer curved stair | Concealed rolled stringer + cantilever treads | Open-riser, support in the wall | Modern foyers |
| Small curved staircase | Rolled-steel stringer + hardwood or stone treads | Tight-radius sweep | Townhouse and condo entries |
| Modern curved staircase | Rolled steel + glass infill | Minimal rail | Contemporary interiors |
Rolled Steel, Then the Treads You Live With
A curved staircase is an interior flight on a rolled-steel stringer bent to one radius. We roll mild steel on a section roller and weld the stringer. Then we powder-coat it, or clad it in hardwood.
Curved stair treads follow that arc in oak, walnut, or ash — or in stone-cap or steel plate when the brief asks. The rail can run in stainless cable, frameless glass, wrought iron, or hardwood spindles, drawn to the same radius.
Work happens in our 4,500 m² Guangdong workshop. We trial-assemble, then crate for ocean freight. We do not stamp drawings or install on site. Your local engineer reviews. Your contractor installs.
Keep reading: Browse the full Staircase Collection → · Compare Outdoor Stairs → · Compare Spiral Stairs → · Compare Straight Stairs →
Treads, Railing, and How the Stringer Reads
What owners often choose before we draw. Final sizes sit on the shop drawings.
What to Send So We Can Draw the Radius
Measure these. Then send the form.
- Floor opening. Width and depth of the upper opening the stair lands in. A plan view helps.
- Rise. Finished floor to finished floor, from the foyer up to the landing.
- Fixed points. Columns, wall pockets, a fireplace breast — anything the arc must clear. A marked photo is enough.
- Sweep and finish. One arc, twin flights, or a hidden stringer. Hardwood with cable, wrought iron, or glass are common pairings. We can draw more than one option.
- Send the brief through the form. Shop drawings list the radius, tread arc, and code families. Your local engineer reviews. Your contractor installs.
Frequently Asked Questions
Radius, packing, and drawing questions before we roll a stringer. If yours is not here, send floor opening and rise through Request shop drawings.
Can you roll a radius around an existing column?
Send the column centerline, wall offset, and rise on a plan view. We draw the stringer to clear the column, with tread arc and headroom shown before fabrication.
How do we measure if the floor is not built yet?
Use the house plans. Send the upper opening, finished-floor rise, and any wall or column the stair must clear. A section view speeds the headroom check.
Can a licensed engineer in my country stamp your drawings?
A licensed engineer in your country stamps the drawings. We do not stamp them. Shop drawings list IRC, IBC, AS 1657, AS 1288, NCC, and CSA for the United States, Australia, and Canada.
How does a rolled stringer ship?
We crate the radius stringer for ocean freight. Treads and the rail bundle in install order. A PDF assembly manual ships with the labelled flat-pack.
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