Outdoor Spiral Staircases
Built for the Elements.
Built to Last a Lifetime.
Our outdoor spiral staircase kits are engineered to handle what nature brings – from UV exposure and coastal moisture to freeze-thaw cycles and hard use.
100%
Satisfied Customers
95%
Years in Business
50
States Served
GET A FREE QUOTE.
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Your information is never sold or shared.
Pay over time with AffirmAs low as 0% APR — Subject to credit check
%
Satisfied Customers
%
Years in Business
States Served
Our Outdoor Collections
BUILT FOR THE ELEMENTS
Built for year-round exposure and hard use, our outdoor staircase kits are available in various configurations – each with different finishes, and tread and accessory options. Every kit is customizable and ships direct from our facility with everything you need for installation.
Ease of Install

Welded with Coverings
- ✓One-piece fabricated welded construction
- ✓Available with covers; non-slip treads also available
- ✓Available in Code and Non-Code configurations
- ✓Powder coat finish options in a range of colors
Lightweight

ALUMINUM
- ✓Available with non-slip treads for safe outdoor use
- ✓Rust-free construction with no paint required
- ✓Mill finish standard; powder coat available
- ✓Code-compliant designs available
Premium

Aluminum with Composite
- ✓High-performance composite tread and covers
- ✓Resists fading, staining, scratching, and mold
- ✓No painting, staining, or sealing required
- ✓Includes our Multiline series – modern, multi-rail designs
★★★★
4.4
Customer Rating
Since 1931
95+ Years Engineering Outdoor Staircases
The Iron Shop has been designing, fabricating, and finishing spiral staircases from a single facility in Broomall, Pennsylvania since 1931. Four generations of the Cohen family have run this operation – and every step of the process, from design and engineering to machining, welding, finishing, and shipping, still happens under one roof.
95+ Years in Business
100,000+ Staircases Installed
125 Expert Craftspeople
1 Facility. Every Step.
How It Works
FROM QUOTE TO INSTALLATION
01
Free Consultation
Speak with a staircase expert who can walk you through measurements, materials, and code requirements – no pressure, just answers.
02
Custom Design
We configure your stair to your exact specs: diameter, height, direction of rotation, tread material, and finish.
03
Precision Manufacturing
Your staircase is fabricated in our Broomall, PA facility by our team of 125 craftspeople and shipped directly to you.
04
Simple Installation
Every kit includes all components and hardware. Most two-person crews can complete installation in a single day with basic hand tools.
Perfect For
OUTDOOR APPLICATIONS
Deck & Patios
Access upper decks without sacrificing yard space
Pool Surrounds
Rust-resistant materials designed for wet environments
Garden & Landscape
Beautify existing outdoor spaces
Commercial Properties
Code-compliant designs for public and commercial use
Hillside & Slope Access
Navigate grade changes with structure that holds
Rooftop Access
Durable, weather-rated access to rooftop decks and terraces
Get Inspired
INSTALLATION GALLERY
Exterior Aluminum Welded Stair
Welded aluminum, 6-0 code diameter exterior spiral, stainless finish with composite tread covers
Bruce Mears-39907-assawoman-18
Welded aluminum, 5-0 code diameter exterior 3 story spiral, gloss white finish with composite tread covers
5’0 Oil Rubbed Bronze Multiline
Aluminum, 5-0 code diameter exterior spiral, oil rubbed bronze finish with multiline rails
Exterior Spiral-Deck
Aluminum, 6-0 code diameter exterior spiral, oil rubbed bronze finish with composite tread covers
Hear first hand
WHAT OUR CUSTOMERS SAY
Common Questions
OUTDOOR STAIRCASE FAQ
Have more questions?
Call a spiral stair expert at 1-800-523-7427.
Mon–Fri 8am–8pm | Sat 8am–12pm EST.
Do outdoor staircases need to be painted?
Steel outdoor staircases should be painted to inhibit rust and protect your investment. We recommend an oil-based enamel with rust-inhibiting additive, applied after assembly. Aluminum stairs require no paint – mill finish is standard, though powder coat is available in a range of colors if you prefer a finished look.
Can I install the staircase myself?
Yes! Most outdoor spiral staircase kits from The Iron Shop can be assembled by two people with basic hand tools – no contractor required for the installation itself. We do recommend consulting a qualified contractor for cutting and framing the floor opening. Metal kits typically take one full day to assemble.
What's the best material for a coastal or waterfront environment?
For ocean, lake, or any waterfront setting, we recommend an all-aluminum staircase. Aluminum is naturally rust-free and requires no painting, making it the most durable long-term option in high-moisture and salt-air environments.
Do you offer code-compliant outdoor designs?
Yes. The Iron Shop offers Code and Non-Code stair configurations. Code stairs meet IBC/IRC requirements with in-between spindles (less than 4″ spacing between verticals) and compliant tread dimensions. Our design consultants can help you determine which configuration is required for your project and municipality.
GET A FREE QUOTE.
Tell us about your project and a staircase expert will be in touch – usually within one business day. We’ll help you work through measurements, materials, code questions, and anything else standing between you and the right stair.
- ✓Free consultation with a staircase expert.
- ✓No pressure. No obligation.
- ✓Ships directly from our Broomall, PA facility.
- ✓95+ years of engineering behind every kit.
We respect your privacy. Your information is never sold or shared.
Pay over time with AffirmAs low as 0% APR — Subject to credit check