Custom Designed Spiral Staircases
Request Information
Check out all our spiral stair options.
Go Spiral
You can’t go wrong! For nearly five decades, Custom Iron has been a top choice for the quality craftsmanship and easy installation of our standard, custom-designed spiral staircases. Check with us to see if we can help bring your dreams to reality! Scroll to see all our spiral stair options!
Exterior Spiral Staircases Built to Last
When it comes to combining function, safety, and beauty in outdoor access solutions, nothing compares to a well-designed spiral staircase. At Custom Iron, we specialize in crafting exterior spiral staircases that are not only durable but also architecturally striking. Whether you’re enhancing a backyard patio, providing access to a rooftop deck, or creating a secondary entrance to an upper floor, our staircases are built to handle the elements while elevating the look of your space.
Every staircase we manufacture is fabricated in our Zumbrota, Minnesota, facility with meticulous attention to detail. By pairing strong materials with protective finishes, we ensure our outdoor spiral staircases are resistant to rust, corrosion, and long-term wear. With a focus on code compliance and safety, you can trust that our designs meet rigorous standards while still giving you endless style flexibility.
Benefits of Outdoor Spiral Staircases
Choosing a spiral staircase for an exterior application offers a variety of benefits that make it a preferred choice for homeowners, builders, and architects alike:
- Space Efficiency: Outdoor spiral staircases take up less footprint compared to traditional stair designs, making them perfect for smaller yards or compact building layouts.
- Durability: Manufactured from steel or aluminum, our exterior staircases are designed to endure rain, snow, and seasonal temperature changes.
- Aesthetic Appeal: From sleek modern designs to more ornate traditional looks, our staircases serve as both a functional feature and a design statement.
- Versatility: Suitable for residential decks, multi-family buildings, rooftop terraces, or even light commercial use.
- Ease of Installation: Pre-fabricated in sections, our staircases ship ready to be assembled on-site, saving time and reducing complexity.
Exterior Applications for Spiral Staircases
Our exterior spiral staircases are suited for a variety of applications, including:
- Providing access from a deck to a backyard patio
- Connecting upper-floor apartments with shared outdoor spaces
- Creating functional, stylish access to rooftop terraces
- Serving as secondary exits for residential or multi-unit dwellings
- Enhancing commercial patios, beer gardens, or restaurant rooftops
Because they are compact yet highly functional, outdoor spiral staircases are often the ideal solution where space is limited or traditional stair runs are impractical.
Why Trust Custom Iron for Your Outdoor Spiral Staircases?
With nearly 50 years of experience, Custom Iron has established itself as a trusted manufacturer of custom-designed spiral staircases for both interior and exterior use. Unlike mass-produced imports, every stair we create is fabricated and quality-checked in the USA. This allows us to offer a product that not only looks great but is also structurally sound and built to last.
Our team will guide you through every step of the process, from initial design to material selection and final delivery, ensuring your outdoor spiral staircase is a perfect fit for your project. Whether you need a standard model with weather-ready finishes or a completely custom solution, we deliver both precision and beauty.
Interior Spiral Staircases for Every Style
When you want to make a dramatic statement inside your home or building, few features are as eye-catching as a spiral staircase. At Custom Iron, we design and build interior spiral staircases that combine functionality, strength, and artistry. Whether you need a modern centerpiece for your living room, a classic addition to a traditional home, or a stylish solution for a commercial interior, our staircases bring elegance and efficiency together.
Because spiral staircases naturally conserve space, they are ideal for areas where a full stair run isn’t practical, but style cannot be sacrificed. Our indoor spiral staircases are fabricated to meet code requirements while delivering a smooth, safe climb, making them a perfect choice for lofts, attics, basements, apartments, and multi-level interiors.
Benefits of Indoor Spiral Staircases
Choosing a spiral staircase for interior use provides a host of advantages, including:
- Space Optimization: Indoor spiral staircases are compact, making them perfect for tight spaces where traditional stairs won’t fit.
- Architectural Appeal: A spiral staircase doubles as a functional art piece, enhancing the look and feel of your interior design.
- Versatility: Available in a variety of styles, from industrial modern with cable railings to ornate wrought-iron designs.
- Customization: We tailor each staircase to your exact dimensions and preferences, ensuring it integrates seamlessly into your layout.
- Code Compliance: Designed to meet building standards for residential and light commercial use, ensuring both safety and performance.
Interior Applications for Spiral Staircases
Our interior spiral staircases are commonly used in a wide variety of settings, such as:
- Loft access in urban apartments
- Compact basement-to-main-level connections
- Stylish upper-level access in lake homes or cabins
- Mezzanines and office interiors in commercial buildings
- Second-story additions in multi-family residences
Because they combine beauty with practicality, indoor spiral staircases are often chosen as both a design feature and a space-saving solution.
Why Choose Custom Iron for Indoor Spiral Staircases?
With that same 50 years of experience, Custom Iron has become a trusted name in the indoor stair industry across the country. All of our interior spiral staircases are fabricated at our facility in Minnesota and shipped nationwide, ensuring you receive American-made quality with every order.
Our design and fabrication teams bring together manufacturing precision and artistic vision to deliver staircases that are safe, durable, and one-of-a-kind. We don’t rely on off-the-shelf parts—instead, every component is crafted specifically for your project. From concept to installation, our team provides expert guidance to help you achieve the perfect fit.
Choose your model:
D100 - Old Faithful
Our D100, Old Faithful, is a true classic. From its traditional handrail to its square vertical balusters, it has a look that stands strong and relevant over time. Shown here with optional checkerplate treads and platform.
Square, smooth balusters are standard on the D100. Please inquire for upgrades such as round balusters, hammered balusters, or mid balusters with knuckles or twists
- Elegant ornamental handrail with vertical volute
- Metal ornamental handrail formed specifically to fit your stairs
D105 - Wildwood
The D105 adds the natural beauty and majestic look of a solid wood handrail. Shown here with a 6010 profile oak handrail along with optional checkerplate treads and platform. All spirals also have the option for wood tread and platform covers in a variety of species to complete the look. Options for other shapes and species are available, please inquire.
Square, smooth balusters are standard on the D105. Please inquire for upgrades such as round balusters, or mid balusters with knuckles or baskets.
- The strength of steel plus the comforting feel of a wooden handrail
- Choose from these common handrail profiles or others available on request
- Wood comes sanded for you to apply your own finish
Handrail Options
D124 - New Faithful
The D124 has square vertical balusters much like the Old Faithful, however, it incorporates a more modern touch with its 1-1/2” round handrail. Shown here with optional checkerplate treads and platform.
Square, smooth balusters are standard on the D124. Please inquire about upgrades such as mid balusters with knuckles or baskets.
Round handrail, complete with welded dome endcap
The metal round tube handrail is formed specifically to fit your stairs—no adjustments or modifications necessary!
D154 - Greenwich Jazz
D154 brings to life sweeping horizontal lines with 8 round tubes as they flow from top to bottom, including the 1-1/2” round handrail, and then finish directly into a vertical end post. Shown here with optional checkerplate treads and platform.
The infill is made of 1″ round tubes that blend beautifully with the D154’s 1-1/2″ round posts. Please inquire about upgrades such as square balusters and infill.
- 1-1/2” round handrail flows smoothly downward into the end post
- The metal round tube handrail is formed specifically to fit your stairs—no adjustments or modifications necessary!
D156 - Cablerail Spiral
The D156 looks minimal yet modern, with an open feel for unobstructed views. It has square posts, a 1-1/2” round handrail, and 1/8” stainless steel cables. It is shown here with optional checkerplate treads and a platform.
The D156 includes square balusters and 1/8” stainless steel cables. This modern look is ideal for both interior and exterior stairs.
- 1-1/2” round handrail and larger 1-1/2” square end posts for added strength
- The metal round tube handrail is formed specifically to fit your stairs—no adjustments or modifications necessary!
D224 - Monterey Bay
The D224 has a clean, contemporary feel with its smooth 1-1/2” round handrail and round vertical balusters. Shown here with optional checkerplate treads and platform.
Round balusters complement and disappear right into the handrail on the D224. Please inquire about upgrades such as mid balusters with knuckles.
- Round handrail, complete with welded dome endcap
- The metal round tube handrail is formed specifically to fit your stairs—no adjustments or modifications necessary!
D500 - The Expression
Our D500 is like no other spiral stair you’ll find. Choose from a variety of looks to fit your style, but also know that you can easily change the look later by just changing the panels! The D500 has a smooth 2″ wide flat handrail, square main balusters, is very easy to install, and even easier to fall in love with the look. Show off a bit—show some expression! Shown here with optional checkerplate treads and platform.
Customize your D500 to fit your style—and change the look at any time by simply changing the laser panels.
- Simple and smooth 1/4 x 2 flat bar handrail welded on top of a 1/2 x 1-1/2 channel
- Offers a very unique, customized look compared to the majority of other spirals out there. Shown here with bamboo panels
Bamboo
Botanical
Champagne
Flourish
Fracture
Greenwich
Patriot
Waterford
Custom Options
These options can be added to any of the models above.
PLATFORM
B-Style Platform
This platform is for spirals going down through a hole in your floor system or deck, or where there is a wall along one side of the platform. Let us know if the opening is round and we can plan for that. B-Platforms have railing on one side.
C-Style Platform
This platform is for spirals attaching along the open side of a floor system or deck. Walk straight onto this platform which has railing on both sides.
D-Style Platform
This platform is for spirals attaching along the open side of a floor system or deck. Walk onto this platform and then turn before going down the stair. D-Platforms have rail on two sides in an “L” Shape.
PLATFORM SURFACE
Checkerplate
Smooth
Frame Only
Deck Ready
Bar Grate
Pan (Max 3/4" Deep)
Red Oak
Other Wood Species
TREAD SURFACE
Checkerplate
Provides a slip-resistant surface
Smooth
Add your own slip-resistant
surface on top of these
Frame Only
To accept solid wood covers BY OTHERS
Deck Ready
Decking BY OTHERS is inset into frames to hide cut edges
Radial Grate
Good drainage, great look!
Pan (Max 3/4" Deep)
Set your own concrete, stone, tile, etc. into these frames
Red Oak
Wood comes sanded for you to apply your own finish
Other Wood Species
Wood comes sanded for you to apply your own finish
RISERS
Economy Risers
Available in Round or Square to match your stair.
Solid Metal Risers
Wood Risers
Red Oak is standard, many other species available.
Laser Scroll Risers
COLUMN CAP
Painted Column Cap
Wood Column Cap
Red Oak is standard, many other species available.
Start Your Spiral Staircase Project Today
Whether you’re looking to enhance your outdoor living space with a weather-ready spiral staircase or transform your interior with a striking architectural centerpiece, Custom Iron has the experience and craftsmanship to bring your vision to life. Our exterior spiral staircases are designed to withstand the elements while providing safe, stylish access between levels, and our interior spiral staircases deliver compact functionality with design versatility that elevates any room.
From residential homes and lake cabins to multi-family residences and commercial buildings, we ship our staircases nationwide and guide you through every step of the process. No matter the size or scope of your project, our team is here to help you create something functional, durable, and unforgettable.
Ready to take the next step? Contact Custom Iron today and let’s get started on designing your custom spiral staircase, built with precision, crafted with pride, and made just for you.