In this video we'll showcase a timelapse of an industrial modification to a 40' shipping container. Checkout the full video for tips or tricks on framing and boarding shipping containers.

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Converting a 40-Foot High Cube Container into a Fire-Rated Electrical Shack

This project documents the full industrial modification of a 40-foot High Cube shipping container into a specialized electrical shack. The build focuses heavily on fire-rating compliance, structural framing, insulation, and durable finishing techniques suitable for demanding industrial environments such as mine sites.

For anyone interested in container homes or industrial conversions, this build offers practical insight into framing and boarding a container to meet strict safety requirements.

Two-Hour Fire-Rated Wall and Floor System

One of the most critical aspects of this project was achieving a two-hour fire rating.

To meet that requirement:

• Walls and floors were fully insulated

• Five-eighths inch drywall was installed

• Three-quarter inch fire-rated plywood was added

This layered system was designed specifically for high-risk industrial environments where strict fire codes apply. The container was essentially lined twice to meet safety standards, which significantly increased labor and material demands.

Custom Framing for Industrial Components

Because this container was being converted into an electrical shack, custom framing was required throughout.

Frames were fabricated to accommodate:

• Large junction boxes located on opposite ends

• Electrical cabinetry

• A 24-inch by 24-inch exhaust fan

• HVAC barred units mounted on the end wall and sidewalls

The HVAC frames were particularly important. These barred units are commonly seen on mobile office trailers and industrial installations where controlled air exchange and cooling are required.

The project also opens the possibility of turning these HVAC frames into a standardized kit for future use.

Heavy-Duty Flooring System

The flooring system was built for durability and industrial performance.

Under the finish layer, drywall was installed as part of the fire-rated assembly. On top of that, 316 stainless steel checker plate flooring was installed.

Key details include:

• Checker plates seam welded every four feet

• Entire surface finished with a black gloss epoxy coating

• Epoxy allowed to cure for 3 to 5 days before foot traffic

Despite its glossy finish, the epoxy floor demonstrated impressive grip and durability. After construction work was completed inside the container, the surface showed no significant wear, eliminating the need for a final epoxy coat.

There is interest in testing this epoxy system directly on new container floors without checker plate, though smooth steel may present slipperiness concerns.

Doors and Fire Safety Hardware

Two doors were installed in this build, both equipped with panic hardware.

Panic hardware is typically required in fire-rated systems to ensure safe egress in emergency situations.

Self-closing devices and check chains were planned but had not yet been installed at the time of filming.

The Challenges of Fire-Rated Container Builds

This project highlighted the difficulty of combining metal fabrication with carpentry and drywall installation.

The team specializes in welding and steel fabrication, so installing drywall and plywood inside a corrugated steel structure proved time-consuming and labor-intensive.

Lining the container twice to meet fire-rating requirements added complexity and cost. The build required extensive attention to detail to ensure compliance while maintaining structural integrity.

The presenter openly reflected that the job was so intensive it may not have been financially efficient. However, for industrial clients operating in environments like mine sites, this level of fire protection is non-negotiable.

Lessons Learned

This electrical shack demonstrates several important takeaways:

• Fire-rated container builds require careful layering of materials

• Industrial applications demand strict compliance with safety codes

• Custom framing solutions are often necessary for specialized equipment

• Epoxy-coated checker plate flooring provides exceptional durability

• Metal fabrication skills do not automatically translate to drywall efficiency

Final Thoughts

This 40-foot High Cube container transformation represents a high-value, industrial-grade interior conversion. It balances fire safety, durability, and practical layout design for electrical and HVAC systems.

While labor-intensive and costly, the final product meets demanding industrial standards and demonstrates what is possible when container modification is executed with precision and safety in mind.

For contractors or clients considering fire-rated container interiors, this project serves as a strong reference point for the level of detail and commitment required.