Custom Stairs
Custom Rooftop Stair Systems for Safe, OSHA-Compliant Access
With over 25 years of experience in the design, fabrication, and installation of rooftop stair systems, Factory Supply delivers reliable, code-compliant solutions for safe rooftop access. We serve a wide range of industries including roofing, general construction, manufacturing, military, aviation, and aerospace.
We specialize in designing and fabricating both steel and aluminum stairs that exceed OSHA, CAL/WA OSHA, and ANSI safety standards. Whether you need a standard off-the-shelf solution or a fully custom rooftop access system, our team is here to help.
Why choose our Rooftop Stairs?
Industry Expertise: Over two decades of experience in access system design and engineering.
Custom Configurations: Tailored to your rooftop’s dimensions, layout, and safety requirements.
Fast Lead Times: Standard modular products available for quick shipment.
Non-Penetrating or Mounted Options: Choose between fixed or counter-weighted (ballasted) systems.
In-House Engineering: We manage the entire process from design to fabrication, ensuring quality, compliance, and fast turnaround.
Pre-Engineered Components: Reduce installation time and overall costs with modular, bolt-together configurations.
Durable Materials: Corrosion-resistant aluminum or steel options designed for long-term exposure to rain, snow, wind, and sun.
COMMON APPLICATIONS & SPECIFICATIONS
Common Applications
Safe access to rooftop HVAC systems, solar panels, and walkways
Emergency egress solutions
Work platforms and equipment access (ducts, pipes, conduits, antennae, and more)
Designed for use in commercial, industrial, and residential environments
Regulatory Compliance
Fully compliant with OSHA, CAL/WA OSHA, and ANSI standards, ensuring workplace safety and regulatory adherence.
Wide Body Design
Standard 24″ body with custom widths available.
Custom Finishes
Color-matching, specialty handrails, risers, treads, and more.
Flexible Installation
Non-penetrating counterweighted or fixed mounting solutions.
Integration Ready
Easily pairs with rooftop guardrails and walkways for complete safety systems.
KEY FEATURES
Easy Installation
Quick and easy to assemble and install on most rooftops
Customizable Design
Can be reconfigured to suit almost any situation
OSHA Compliant
Meets or exceeds OSHA safety regulations
DESIGNED by Engineers
Custom rooftop solutions designed by our in-house team of engineers
CORROSION RESISTANT
Made from galvanized steel or aluminum for resistance to rust and corrosion
NON-SLIP
Non-slip stairs and platforms for workers safety
Talk to a specialist today
Your Perfect Solution Awaits!
DESIGNED AND TESTED TO EXCEED OSHA AND INDUSTRY STANDARDS
| Jurisdiction | Regulation |
|---|---|
| OSHA (Construction Activities) |
|
| OSHA (Industrial Activities) |
|
PROJECTS

Custom Rooftop Access Solution for Complex Manufacturing Roof Layout
A custom-engineered ballasted stair and crossover stair system was supplied to deliver safe rooftop access and fall protection in accordance with OSHA and ANSI standards.

Custom Rooftop Crossover Stairs and Guardrails for Industrial Food Manufacturing Plant Safety
Custom ballasted stairs and guardrails were engineered and supplied for safe access and fall protection, meeting OSHA and ANSI standards. The modular, lightweight system protects the roof membrane and installs quickly without welding, saving time and costs.

Modular Fixed Access Ladder with Guardrail for Cold Storage Facility
Factory Supply engineered and supplied a modular fixed access ladder with guardrails to replace the client’s rusty, non-compliant ladder. Our system offers fast installation without on-site welding, meets OSHA and ANSI standards, and provides safe, customizable rooftop access for commercial and industrial facilities.

OSHA-Compliant Roof Hatch Guardrails for Condominium Complex
Factory Supply engineered and supplied lightweight, corrosion-resistant aluminum guardrails with counterweighted baseplates around the condominium’s rooftop hatches. This modular system eliminated rust issues, ensured OSHA compliance, and protected the roof membrane by avoiding penetrations.
RELATED PRODUCTS
Fixed Ladders | RoofClimb Series
Fall protection systems designed to provide safe and efficient access to rooftops and elevated surfaces.
ROOFTOP GUARDRAIL | GARGOYLE SERIES
Fall protection systems designed to protect workers performing tasks near rooftop edges.
ROOFTOP PROTECTION PROGRAM
Our rooftop protection program uses 6 stages to systematically assess fall hazards on rooftops, prioritize risks, and implement compliant safety solutions.