Outdoor Curved Staircase | Custom by DBM Factory

Outdoor Curved Staircase

An outdoor curved staircase has to do two jobs. It has to read as a beautiful arc. And it has to keep doing that after a few winters, summers, and seasons of rain.

We build to your drawing in finishes chosen for the climate. Share a sketch, photo, or plan, and we'll work out the curve, the materials, and the weather brief together.

Choose the Finish for Your Climate

Where It Fits — Four Common Project Types

From Sketch to Site — Three Stages

After delivery, your contractor or installer handles fitting. We provide an assembly guide and a step-by-step video. Where local installation is available in your region, we can help you find a vetted installer.

Outdoor Curved Staircase

When the Weather Never Stops — Matching the Finish to the Climate.

An outdoor curve has to look beautiful on day one and still look right after years of weather. The arc faces sun, rain, and whatever the local air carries, every hour it stands outside. So the brief here is rarely about the shape alone. It is about which finish keeps that shape looking right through the seasons.

Owners reach us once the stair has a settled home in the open air. A coast-side terrace, a dry inland garden, or a cold mountain approach each give the same curve a very different exposure. A finish chosen for the look alone can weather badly in the wrong climate. The real brief is an arc built to last the weather of its own site.

Why the Climate Decides the Finish System.

The rust pressure on a curve depends almost entirely on the air around it. Salty coastal air is the most testing exposure, so marine-grade stainless or well-protected aluminium holds the finish steady there. A dry inland garden is kinder, so hot-dip galvanised steel under a powder-coat layer often carries the same arc at a more measured cost. The shape stays the same, while the finish beneath the surface answers to the climate.

Strong sun and a freezing winter add two quieter concerns. Year-round sun fades and stresses a coating over time, so the colour and finish are picked to hold up under it. A climate that freezes and thaws again and again asks the finish to take constant movement. We factor both into the choice, rather than treating every outdoor stair the same way.

The owner's appetite for upkeep is the honest counterweight. A tougher finish costs more upfront and asks less attention later. A lighter finish costs less at the start and tends to want more regular care to stay sound. We set that trade-off out plainly before a single line gets drawn, so the choice fits both the climate and the owner's patience for upkeep.

How the Same Curve Is Finished for Three Climates.

Coastal and Pool-Edge Exposure.

Salt air and chlorine are relentless, so the material has to resist corrosion from the start. A marine-grade stainless stringer, or aluminium with a durable protective finish, holds its appearance where plain steel would struggle. The fixings move to a matching corrosion-resistant grade for the same reason. We specify the whole assembly for the coast, not just the visible stringer.

Inland Garden and Estate Exposure.

A drier inland site is a more forgiving environment for the curve. Hot-dip galvanised steel beneath a powder-coat colour is the dependable choice for back-garden levels and estate approaches. The galvanising protects the steel, and the coating carries the colour the design wants. The configuration stays straightforward where the air is kind.

Alpine and Cold-Climate Exposure.

A mountain or cold-climate site brings snow, ice, and constant freeze-thaw movement. The finish has to tolerate that repeated expansion without lifting, and the tread surface matters more where ice forms. A textured or slip-resistant tread becomes a sensible specification in that setting. We tune the finish and the tread to the cold the staircase will actually face.

What Coordination Looks Like for a Weather-Exposed Curve.

Drawing-First Coordination begins with the climate brief alongside the floor opening and the rise. We settle the finish system, the material grade, and the tread surface before anyone cuts metal, because the exposure decides those choices as much as the geometry does. The working drawing records the configuration and the finish specification together.

Trial Assembly Before Packing then stands the whole curve upright on our Guangdong workshop floor. We apply the chosen finish, fit every fan-shaped tread to its place on the arc, and photograph the result. Then we take the staircase down and label each part, so the build on your site becomes an ordered bolt-together job.

Export-Ready Crating protects the outdoor finish for the long ocean leg, where salt spray and humidity travel with the freight. We wrap the coated surfaces against knocks and seat the heaviest pieces low. The crate lands ready to open and assemble straight against the drawing.

What to Send Us About Your Site.

A photo of the location gives us a great deal to work with. Add the floor-to-floor height, which is the climb from the lower level up to the upper one. Then describe the climate plainly, from coastal salt air to dry inland sun or alpine cold.

One more note helps us set the finish. Tell us how much ongoing upkeep you are content to take on, and whether ice or strong sun is a regular feature of the site. From there we turn your notes into a working drawing and a stair ready to ship.

After delivery, fitting is on your side. On site, your contractor or installer handled fitting directly from our drawings, with our assembly guide and step-by-step video to follow — or use your own local installer where needed.

Compare the Wood Curved Stairs → · see the Modern Curved Staircase → · browse the full Curved Staircase range → · or explore all our staircases →