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RTU Access Stair installation

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RTU Access Stair
May 13, 2025
Estimated 4 minute read

ErectaStep Non-Penetrating RTU Access Stair Installation

Consider how difficult and time-consuming it would be for workers to access this RTU without access stairs. With ErectaStep non-penetrating prefabricated stairs, modular components can be configured and bolted together, creating a safe way for workers to access the RTU without custom fabrication or costly, time consuming engineering.

ErectaStep Non-Penetrating RTU Access Stairs: Safe Rooftop Unit Access Installed by Greenwood Industries

Greenwood Industries , a leading commercial contractor and ErectaStep distributor, recently installed a modular ErectaStep stair and platform system to provide safe, code-compliant access to a rooftop unit (RTU). Greenwood Industries specializes in roofing, waterproofing, and safety solutions for commercial and industrial facilities, delivering solutions that prioritize both worker safety and building integrity.

What Is an RTU?

A Rooftop Unit (RTU) is a self-contained HVAC system that provides both heating and cooling for commercial and industrial buildings. RTUs are typically mounted on rooftops to save space and streamline ductwork. They are commonly found on offices, retail stores, and warehouses, and require regular maintenance to ensure optimal performance and energy efficiency.

The Challenge of RTU Access

Accessing rooftop equipment like HVAC units, ductwork, or piping demands safe, compliant, and non-disruptive infrastructure. Without a dedicated system, workers face time-consuming and hazardous climbs, increasing the risk of injury and non-compliance with OSHA standards.

ErectaStep’s Non-Penetrating Counterweight-Based Stair and Crossover System

Non-Penetrating, Counterweighted Design Feature

This ErectaStep installation stands out for its non-penetrating, counterweight-based rooftop stair and crossover system. Unlike traditional stair systems that require drilling or anchoring into the roof membrane, ErectaStep’s solution preserves the integrity of the roofing surface:

  • Non-Penetrating Support: The system eliminates the need for roof penetrations, protecting the roof from leaks and damage while reducing installation time and disruption.
  • Counterweighted Stability: A galvanized steel base with integrated counterweight trays holds powder-coated steel weights and neoprene load-distribution strips. This design stabilizes the structure and distributes loads evenly, ensuring a secure footprint.
  • Wind and Weather Resistance: The widened base and counterweights provide stability in wind conditions up to 115 mph, making it ideal for open or elevated rooftop environments.
  • Durability: Built from corrosion-resistant aluminum and galvanized steel, the system is engineered for long-term performance in harsh rooftop climates.
  • Slip-Resistant and OSHA-Compliant: All treads and platforms meet OSHA standards for fall protection and traction, minimizing safety risks.

Modular, Off-the-Shelf Solution

Greenwood Industries utilized ErectaStep’s modular, off-the-shelf components for this RTU access stair installation. This approach offers several advantages:

  • No Custom Fabrication Required: The modular system bolts together quickly, eliminating the need for welding, cranes, or special engineering.
  • Fast Installation: Most systems can be installed in hours, not days, with minimal tools and labor.
  • Flexible Configurations: Standard configurations are available in 3-, 4-, 5-, and 6-step crossover heights to accommodate various rooftop obstructions and elevation changes.
  • Reconfigurable: If your needs change, the system can be unbolted, relocated, or expanded as needed.

Why Choose ErectaStep for RTU Access Stairs?

ErectaStep’s non-penetrating RTU access stairs and platforms provide a secure, efficient way to navigate rooftop obstacles without compromising roof integrity. These systems are ideal for commercial and industrial rooftops where safe access is required over piping, HVAC equipment, and other obstructions.

Key Benefits:

  • Protects roof membrane-no drilling or anchoring required
  • Delivers OSHA-compliant, slip-resistant access to RTUs
  • Installs rapidly with minimal disruption to building operations
  • Engineered for wind stability and long-term durability

About Greenwood Industries

Greenwood Industries is renowned for its expertise in commercial roofing and safety solutions. As an ErectaStep distributor, Greenwood delivers pre-engineered, OSHA-compliant access systems that safeguard both workers and building assets.
See more at greenwoodindustries.com

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Looking to simplify RTU access while protecting your roof? Choose ErectaStep’s non-penetrating RTU access stairs-fast, safe, and always OSHA compliant-professionally installed by Greenwood Industries.

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Compliance Expert

Todd LaSota

Your friendly stair expert