Rooftop Dunnage Steel

Beams and Columns  |  Flitch Plates  |  Dunnage Steel  |  Custom Fabrication

Mechanical equipment on rooftops requires proper structural support. DeJong Iron fabricates dunnage steel, the framework that supports air handlers, chillers, condensers, and other HVAC equipment per your engineered drawings. We serve mechanical contractors throughout Northern New Jersey and the New York metropolitan area with fabrication, delivery, and installation services.

What Is Dunnage Steel?

Dunnage steel consists of structural frames, supports, and platforms that distribute equipment loads across roof structures. Properly designed dunnage prevents point loading that can damage roofing systems and ensures equipment operates on a stable, level platform.

Our Dunnage Services

Fabrication – We build dunnage frames to your exact engineered specifications. Provide drawings and we fabricate the complete assembly in our shop.
Field Measurement – When existing conditions require verification, we can provide field measurement services to confirm dimensions before fabrication.
Installation – Our crews install dunnage steel, coordinating with your equipment setting schedule.

Finish Options

Prime Painted – Standard primer coating for protected applications.
Galvanized – Hot-dip galvanizing for maximum corrosion resistance in exposed locations.
Powder Coated – Custom colors for visible installations where appearance matters.

Equipment Support Applications

Air Handlers – Frames supporting large rooftop air handling units.
Chillers – Heavy-duty platforms for chiller equipment.
Condensers – Support systems for condensing units and split systems.
Cooling Towers – Structural frameworks for cooling tower installations.
Generators – Platforms for emergency and standby generator equipment.