Spiral Stairs
SPIRAL STAIRCASE · METAL · WOOD · FACTORY FLAT-PACK
a custom spiral staircase around a center column
Villa owners and small contractors use this page when a straight or curved flight will not fit. A helix lives in a circle. Send floor-to-floor height and that circle. We return shop drawings.
DBM is a spiral staircase manufacturer in Guangdong. We trial-assemble the helix, then ship a labelled flat-pack. Your local contractor installs.
An outdoor spiral staircase (also an exterior spiral staircase) fits a deck corner. Spiral deck stairs use the same center column with a weather finish. A modern spiral staircase reads as a clean helix in the room.
Shop drawings · factory quote
Send rise and diameter. We reply with shop drawings.
VILLA & COUNTRY HOME
Florida villa owners often want a library mezzanine or a loft stair that does not eat the room. A wooden spiral staircase pairs a steel column with hardwood treads and a hardwood handrail.
Cable, glass, or wrought-iron infill can match the house. Column diameter follows the opening you send, not a stock chart.
NEW HOME BUILD
House plans often keep a tight circle for a study loft, attic access, or a small second floor. We draw the helix to that circle.
Hardwood treads warm a residential interior. Steel-plate treads read cleaner in a loft. Sections often pass through a standard interior door.
APARTMENT & CONDO
A loft apartment can reach the upper level without giving up a hallway. We draw the tread arc against the upper opening so headroom clears.
A metal spiral staircase on a steel center column is a common loft read. Hardwood treads sit on the same column when the interior wants warmth.
BATCH RENOVATION & MULTI-UNIT DEVELOPMENT
When the same helix repeats, diameter, tread count, and column height stay the same from unit to unit.
Modular stairs here means factory modules built to one drawing, not a DIY kit from a retail shelf. Treads ship in steel plate or hardwood to the spec sheet.
Spiral Staircase — Range Overview
| Product | Material | Style | Typical use |
|---|---|---|---|
| Wooden Spiral Staircase | Steel column + solid hardwood treads and handrail | Warm residential helix | Villa libraries, country homes |
| Metal Spiral Staircase | Powder-coated steel column + steel-plate or chequer treads | Loft helix | Loft apartments, split-level units |
| Interior Spiral Staircase | Powder-coated steel column + hardwood or steel treads | Indoor tight circle | Study lofts, attic access |
| Outdoor / Exterior Spiral Staircase | Galvanized or stainless column + steel or composite treads | Weather-finished helix | Deck corners, balconies, roof terraces |
| Factory Modular Spiral | Steel column + composite or hardwood treads | Repeat modules to one drawing | Batch units, same rise and diameter |
About This Spiral Range
Owners pick a helix when the floor plan has no room for a straight run. The upper level still needs a stair. We draw the tread layout to the opening you send.
A steel column with steel-plate treads reads as a loft stair. The same column takes solid hardwood treads and a hardwood-clad handrail for a wooden spiral staircase. Cable, glass, wrought iron, or hardwood spindles run from tread to handrail.
Repeat units use factory modules to one drawing. That is modular stairs in our shop, not a retail DIY kit. Aluminum or galvanized outdoor columns are available when the helix sits outside.
Crafted in our 4,500 m² Guangdong workshop. We trial-assemble, then crate. We do not handle on-site permitting or local installation. Shop drawings go to your local engineer and installer.
Keep reading: Browse the full Staircase Collection → · Compare Outdoor Stairs → · Compare Straight Stairs → · Compare Curved Stairs →
Spec Snapshot
What owners often choose before we draw. Final sizes sit on the shop drawings.
How to Spec Your Spiral
What to measure and send before we draw.
- Measure the rise. Finished floor to finished floor. Column length and tread count both follow this.
- Measure the diameter. The clear circle the helix must fit, set by walls or the nearest furniture line.
- Send the upper opening. The top landing needs room for the flange and headroom.
- Choose wood or metal. Hardwood treads for villas and libraries. Steel-plate treads for loft apartments. Weather finish for deck corners.
- Send it through the form. We return column length, tread arc, and the code-family list. Your local engineer reviews. Your installer stacks the treads.
Frequently Asked Questions
Diameter, material, and freight questions owners and contractors ask before a drawing. If yours is not here, send rise and diameter through Request shop drawings.
What floor-to-floor height can a helix fit?
Tread count and column length both adjust to the rise. Send the finished-floor height. We draw the riser on the shop drawings. Your local engineer checks the final numbers.
How tight a circle can it use?
The tread arc sets the smallest diameter. Send whether the stair is for a home or a commercial floor. We draw a diameter your local engineer can review. We do not stamp the drawings.
What is the difference between wooden, metal, and factory modules?
Wooden = steel column with hardwood treads and a hardwood-clad handrail. Metal = steel column with steel-plate or chequer treads. Factory modules repeat one drawing across units. None of these is a retail DIY kit.
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 is a helix packed for ocean freight?
We pack in flat-pack, photo-documented. The column boxes apart from the treads. Treads stack in stair-up order. A PDF assembly manual ships with the pack for your installer.
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