Custom Staircases & Architectural Metal Stairs — Boston & Massachusetts

Floating stairs, spiral and helical systems, structural steel stairs, and integrated railings—fabricated in Everett, detailed for constructability, and installed by Irias Iron Works field teams statewide.

Exterior spiral steel staircase with integrated railings — Irias Iron Works

Staircases are structural and sculptural at once. We partner with architects, engineers, and builders to deliver custom staircases and railings that meet code, carry prescribed loads, and photograph cleanly. From straight-run steel to helical geometries, we obsess over connections, tolerances, and installation sequencing.

Often specified together

Pair stair scopes with custom railings, exterior egress / fire escape work, or lobby and access gates. Start a single conversation on our contact form.

Stair types we build

  • Floating and concealed-stringer stairs with hidden attachment strategies
  • Spiral and helical stairs — tight radius layouts with controlled deflection
  • Commercial egress stairs, monumental stairs, and feature stairs in lobbies
  • Exterior galvanized or powder-coated steel stairs for access and roof levels

Coordination with engineers and architects

We translate design intent into shop drawings that clarify weldments, bolted connections, and interfacing trades. When structural calculations are provided, our detailing follows the engineer of record. If you are early in design, we can advise on constructability and budget-friendly approaches before documentation hardens.

Materials & finishes

Carbon steel, stainless steel, and mixed-metal assemblies with tread options including steel pan, wood cap, stone support, or glass. Finishes selected for interior climate-controlled spaces vs. freeze-thaw exterior exposure.

Installation in occupied buildings

We plan rigging paths, temporary bracing, and phased closures with your GC. Safety plans align with site rules for Boston-area projects and broader Massachusetts job sites.

Discuss your staircase

FAQ: stair fabrication

Do you provide shop drawings?

Yes — shop drawings are part of our workflow for approval prior to fabrication.

Can you retrofit an older building?

Many projects require field verification of slab edges, embeds, and structure — we assess and propose connections that respect existing conditions.

Questions? We can help.