Outdoor Steel Staircases

Outdoor steel staircase with open tread diamond plate and solid railings fabricated by Steel Masters NYC
Exterior Metal Staircase — Open Tread Diamond Plate

Steel Masters NYC custom fabricates and installs outdoor steel staircases for commercial and residential properties throughout all five boroughs, Long Island, and Westchester. Whether you need a new exterior staircase or a full replacement of an existing unit, every staircase we build is custom-measured, fabricated in our Brooklyn shop, and installed by our own crew. Licensed and insured since 1972.

Types of outdoor steel staircases we fabricate

Every outdoor staircase application is different. We fabricate all major configurations to meet your specific site conditions, load requirements, and building code specifications:

Galvanized open-tread staircases — weather-resistant, ideal for exterior commercial use
Diamond plate tread staircases — anti-slip surface, heavy foot traffic applications
Grating tread staircases — open bar grating allows drainage, ideal for wet environments
Rooftop access staircases — fixed roof stairs with safety cage and handrails
Loading dock staircases — industrial-grade stairs for warehouse and facility access
Straight & L-shaped configurations — custom layout for any site
Handrails & guardrails included — pipe rail, flat bar, or custom profiles

double landing outdoor steel staircase
Double landing outdoor metal staircase - Queens, NY
Outside diamond plate steps landing picket railings middle village queens nyc
Outside diamond plate steps with
landing and picket railings, top view.
- middle village queens NY
Store entrance metal outdoor closed tread staircases railings
Store entrance metal outdoor closed
tread staircases with railings
SOHO, manhattan
tube support gate landing williamsburg brooklyn stairs outdoor open tread diamond plate stairs
Outdoor open tread diamond plate stairs with two landings, tube supports and custom railings with security gate at top, Williamsburg Brooklyn
Top view diamond plate-outside metal steps with 2 landings
Top view diamond plate-outside metal steps with 2 landings
Outdoor diamond plate steel deck structural supports open tread metal bent steps marble hill Brooklyn, NYC
Outdoor diamond plate steel deck with structural supports and open tread metal bent steps.

- marble hill Brooklyn, NYC
Outdoor galvanized grating winding staircase landings pipe-railing condo NYC
Outdoor galvanized grating winding staircase with landings and pipe-railing, upper east side condo NYC
Outside closed tread diamond plate steps scroll design railings matching steel security double doors lower east side nyc
Outside closed tread diamond plate steps with scroll design railings and matching steel security double doors, lower east side nyc
galvanized staircases railings
Fully galvanized staircases and railings, brooklyn, NY
Double structural steel cement pan institutional staircase steel framed landing
Double structural steel cement pan institutional staircase w steel framed landing, rockaway queens
Structural commercial steel pan stair tower structural framing, guardrail stairs landing protective debris mesh
Structural commercial steel pan stair
tower with structural framing, guardrail,
stairs + landing, and protective debris mesh. (Manhattan, NY)
Diamond plate open tread metal welded pipe rails
Diamond plate open tread metal with
4 line welded pipe rails, rosedale queens
Steel fire stairs with structual landing pipe railing glavanized edison new jersey
Steel fire stairs with structual landing and 2 line pipe railing, glavanized finish-edison new jersey
closed diamond stairs
Closed diamond steel plate stairs,
dumbo brooklyn
Steel staircases steps
Steel staircases steps, cypress hills
brooklyn, NY
Outside diamond plate steps landing picket railings
Outside diamond plate steps with landing and picket railings - astoria queens
diamond plate meta steps tube rails
4 foot wide steel diamond plate 1/4
thick steps with square tube pipe railings
- forest hills queens ny
exterior metal stairs open tread diamond plate fully welded steel steps solid railings.
Exterior metal stairs with open tread diamond plate fully welded steel steps
and solid railings - morris park bronx
Open tread diamond plate steel staircase
Open tread diamond plate steel stairs
with support columns and half inch
picket railings, all fully welded - mott haven bronx
exterior staircase Supports
Exterior staircase with square tube
column supports - bushwick brooklyn
diamond plate metal treads bolted stringers
Diamond plate closed metal treads storefront entrance bolted to stringers - long island city queens
Open tread simple steel staircase and guard
Open tread simple steel staircase and guard, astoria queens NY
Curved structural stair tower framing
Curved structural stair tower framing.
(NY, NY)
floating steel open staircase rooftop custom iron works
Floating steel open staircase on rooftop custom iron works -greenpoint, brooklyn
closed tread diamond plate-metal steps
Closed tread diamond plate metal steps, east flatbush NY
Galvanized open tread staircase deck porch
Galvanized open tread staircase
and deck porch, bensonhurst brooklyn
Diamond plate galvanized staircase
Diamond plate galvanized staircase, brownsville brooklyn

What’s included with every outdoor staircase installation

Custom site measurement & design
Galvanized or primed & painted finish
Structural steel stringers & welded connections
Anti-slip tread surface
In-house fabrication & on-site installation

Why outdoor steel staircases need to be built right in NYC

Outdoor staircases in New York City face constant punishment — freeze-thaw cycles, salt air, rain, snow, and heavy daily use. A poorly fabricated staircase deteriorates fast and becomes a safety and liability hazard. Steel Masters builds every outdoor staircase from heavy-gauge structural steel with galvanized or quality painted finishes specifically engineered to withstand the New York climate for decades. Every unit is built to proper building standards so you’re protected from day one.

Who we build outdoor staircases for

We work with apartment building owners, property managers, general contractors, hospitals, schools, factories, industrial facilities, retail properties, and government buildings throughout New York City. Whether you need a simple backyard staircase or a complex multi-flight exterior egress system, our team has the experience and capacity to handle it. See also our full staircases hub page and our indoor fireproof metal staircases.

Serving all of NYC and surrounding areas

We fabricate and install outdoor steel staircases throughout Brooklyn, Queens, Manhattan, the Bronx, Staten Island, Long Island, and Westchester. Every staircase is custom-built to your exact site — call us at (888) 577-8335 or submit an estimate request and we’ll arrange a site visit to measure and quote your project.

(888) 577-8335