Metal Stringer Fabrication

When it comes to crafting modern staircases that are both durable and visually stunning, Metal Stringer Fabrication is the backbone of structural innovation. As a critical component of any stair system, the metal stringer provides the strength, shape, and design versatility that contemporary staircases demand. Whether you’re building for residential elegance or commercial resilience, precision in metal stringer fabrication is what elevates a staircase from functional to exceptional.

At Modern Stairs Plus, we bring years of experience and expertise to every Metal Stringer Fabrication project, combining cutting-edge technology with artisan-level craftsmanship. In this guide, we’ll explore the intricacies of metal stringer fabrication, its benefits, types, materials, applications, and how it contributes to both safety and design excellence.

What Is Metal Stringer Fabrication?

Metal stringer fabrication refers to the process of designing, cutting, assembling, and finishing the metal components that support stair treads and risers. These stringers serve as the structural spine of the staircase, bearing weight and defining the stair’s profile.

Key Features:

  • Typically made from steel, stainless steel, or aluminium
  • Can be configured in mono, dual, or zigzag stringer designs
  • Engineered for strength, stability, and longevity
  • Custom-fabricated to match architectural and interior styles
indoor metalwork

Why Metal Stringer Fabrication Matters

1. Structural Integrity

Proper fabrication ensures the staircase can safely support weight over time. It’s especially critical for floating and open-riser stair designs that rely solely on the strength of the stringer.

2. Custom Design Flexibility

From minimalist floating stairs to industrial zigzag configurations, metal stringers can be shaped and finished to suit virtually any design.

3. Code Compliance

Accurate fabrication guarantees that stair dimensions, load-bearing requirements, and safety features meet Canadian building code standards.

4. Durability in Demanding Conditions

Unlike wood, metal stringers don’t warp, crack, or rot. They’re ideal for both interior and exterior applications across various climate conditions.

5. Aesthetic Appeal

Whether exposed for architectural interest or concealed for a seamless look, metal stringers enhance the visual impact of the staircase.

Types of Metal Stringers

Metal Design LogoMono Stringers

  • Single, central beam supporting the treads
  • Creates a floating effect
  • Common in modern and minimalist designs

 

Metal Design LogoDual Stringers

  • Two parallel supports on either side of the stair treads
  • Offers symmetrical strength and a traditional aesthetic
  • Often used in commercial and high-traffic settings

 

Metal Design LogoZigzag or Sawtooth Stringers

  • Characterized by angular, geometric designs
  • Adds bold visual appeal
  • Ideal for contemporary and architectural interiors

 

Metal Design LogoBox Stringers

  • Enclosed or “boxed-in” style for added strength and a clean profile
  • Common in luxury and custom stair builds

 

Metal Design LogoWall-Mounted or Cantilevered Stringers

  • Embedded into the wall with no visible support
  • Delivers the most dramatic floating staircase appearance

Materials Used in Metal Stringer Fabrication

Steel

  • Strong, cost-effective, and versatile
  • Can be powder-coated, painted, or left raw
  • Ideal for both residential and commercial applications

 

Stainless Steel

  • Sleek, corrosion-resistant, and modern
  • Often used in luxury or exterior applications
  • Offers a polished or brushed finish

 

Aluminium

  • Lightweight and rust-resistant
  • Best for outdoor applications or where reduced weight is required

 

Finishing Options:

  • Powder Coating: Durable, colourful, and UV-resistant
  • Brushed Finish: Subtle texture with a clean look
  • Galvanization: Zinc-coated for rust protection, especially outdoors
  • Raw Industrial: For exposed, rugged aesthetic designs

Steps in the Metal Stringer Fabrication Process

1. Design and Engineering

  • Stair layout planning based on site dimensions and building codes
  • 3D modelling and CAD drawings ensure precision
  • Load calculations for safety certification

 

2. Material Selection

  • Choosing appropriate metal based on use (indoor/outdoor, residential/commercial)
  • Selecting the correct gauge and thickness for strength

 

3. Cutting and Shaping

  • CNC machines and plasma cutters used for accurate cuts
  • Custom angle cuts for risers, treads, and transitions

 

4. Welding and Assembly

  • MIG or TIG welding joins parts with precision
  • Reinforcements added as needed
  • Tolerances checked to ensure consistency

 

5. Surface Finishing

  • Polishing, powder coating, or galvanizing applied
  • Final inspection ensures a flawless result

 

6. Installation Preparation

  • Pre-drilled holes and mounting brackets for efficient on-site fitting
  • Matching tread supports and railing connectors pre-attached where possible

Applications of Metal Stringer Fabrication

Residential:

  • Floating stairs in modern homes
  • Basement-to-main level stairs
  • Staircases with wood or glass treads

 

Commercial:

  • Office lobbies and mezzanine access
  • Showroom centrepieces
  • Industrial-style cafes and retail stores

 

Exterior:

  • Deck staircases
  • Rooftop access stairs
  • Garden or landscape stairs
IMG 3006

Building Code Considerations

All Metal Stringer Fabrication must comply with national and provincial building codes such as:

  • National Building Code of Canada (NBCC)
  • Ontario Building Code (OBC)

Key Code Elements:

  • Riser heights ≤ 180 mm
  • Tread depths ≥ 280 mm
  • Guardrails and handrails required if above 600 mm elevation
  • Stringer design must pass structural engineer review

Maintenance Tips for Metal Stringers

  • Inspect for rust or corrosion annually (especially outdoor stairs)
  • Clean with mild soap and water—avoid harsh chemicals
  • Re-coat or touch up powder coating as needed
  • Check for loose bolts or fasteners after seasonal changes
Contemporary metalwork

Current Trends in Metal Stringer Fabrication

1. Hybrid Material Integration

Combining steel stringers with wood treads or glass railings adds contrast and warmth.

2. Seamless Welding

Invisible joints and clean lines enhance modern aesthetics.

3. Matte and Textured Finishes

Matte black, dark bronze, and charcoal tones dominate high-end designs.

4. LED Integration

Under-tread lighting or side-strip LED systems provide both function and ambience.

5. Biophilic Enhancements

Pairing fabricated stairs with natural elements like indoor planters or green walls.

Who Benefits from Custom Metal Stringer Fabrication?

Homeowners:

  • Upgrade to a modern, safe, and code-compliant stair system
  • Create a showpiece in open-concept living spaces

 

Architects & Designers:

  • Leverage structural steel flexibility for bold concepts
  • Seamlessly integrate stairs into modern floor plans

 

Builders & Contractors:

  • Prefabricated components reduce on-site labour and install time
  • Reliable, consistent quality enhances client satisfaction

Why Choose Modern Stairs Plus for Metal Stringer Fabrication?

At Modern Stairs Plus, we’re more than fabricators—we’re design collaborators. From concept to completion, we ensure your Metal Stringer Fabrication is built to perform and made to impress.

What Sets Us Apart:

  • Custom Designs tailored to your architectural vision
  • Premium Materials sourced locally and responsibly
  • Advanced Technology including CAD, CNC, and plasma cutting
  • Engineering Precision that meets all safety codes
  • Efficient Installation with pre-fitted hardware and components

We work closely with architects, interior designers, builders, and homeowners to deliver fabricated stair systems that are not only structurally sound but also visually stunning.

Elevate Your Staircase with Metal Stringer Fabrication

Metal Stringer Fabrication is more than a construction process—it’s a craft that blends strength, style, and precision engineering. Whether you’re aiming to create a sleek floating staircase or a bold architectural centrepiece, custom-fabricated metal stringers are the foundation of modern staircase excellence.

At Modern Stairs Plus, our expertise ensures every detail—from the first weld to the final finish—reflects the highest standards of quality and design.

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