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Container Cover Roofs
Cost-effective solutions for roofing systems, storage & warehouses.
Convert your existing shipping containers into functional and secure storage or working area by adding a SteelMaster shipping container cover.
SteelMaster provides an economical solution for a variety of needs by adding a roof between two shipping containers, also known as Conex boxes, sea cans, or ISO containers, with our innovative steel container cover kits.
Versatile, durable, affordable storage
Good for commercial and industrial applications
Add extra storage to your garage.
Perfect for bulk & ag storage
Expandable and portable for job-site equipment.
Small but mighty storage.
Check out real-life SteelMaster projects & learn more about:
Typically, the cost of a steel shipping container cover building starts at $11 per sqft, depending on the endwalls and other accessories chosen, with sizes that typically range between 20’ and 50’ wide.
All steel container covers use steel gauges that range between 22 gauge and 14 gauge, depending on the structural needs of the roof.
Typically, the cost of adding a steel roof ranges between as low as $12 to $25 per sqft depending on the endwalls chosen, the steel gauge needed for structural integrity (between 22 and 14 gauge) and other accessories or options selected.
Sizes can vary greatly with most between 20′ and 50′ wide. Narrower or wider buildings are available but may require additional engineering considerations.
Any roof that spans less than 25’ is considered to be a small roofing application. You can typically get by with lighter gauges of steel because of the relatively small width of the roof.
For additional storage, you may need to use several containers to add more length and/or widen the building. This is an ideal solution for businesses that need larger and more durable storage buildings.
The largest container-cover buildings can use multiple shipping containers to provide more length and/or stack containers on top of each other to create buildings suitable for large-scale commercial storage.
A container cover is a prefab roofing system attached to one or multiple shipping containers to create storage space that shelters property and people.
Originally invented by SteelMaster as a solution for storing bulk items in a cost-efficient manner, container covers combine shipping containers with prefabricated steel roofing to create storage structures that can be used for a variety of purposes.
These have become one of the preferred storage solutions for commercial and industrial uses for several reasons:
✔ Easy, quick, and cost-effective to construct with a small crew
✔ Potential for expandable storage
✔ Good for bulk items or equipment storage
✔ Can be disassembled and reassembled in different locations
To create a shipping container cover shed, all you need are shipping containers, and a SteelMaster kit.
See container cover structures from a few of our many satisfied customers.
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Most of the container cover roofs we sell are custom designed to meet unique usage, environmental regulations, and code requirements. These are the main ways they differ.
Roofs can be attached to either the inside edges or outside edges of the two containers, referred to as “inside mounts” and “outside mounts.” For the largest industrial-scale projects builders can also mount a roof on top of stacks of two shipping containers.
The SteelMaster team has decades of experience helping customers both plan and design their container cover buildings through consultations with our experienced project managers.
Before you get started on your container cover project, it is helpful to do some planning to understand the construction so that the roof system fits your exact needs.
Most container roofs span across two and four shipping containers that range between 20 and 40 feet long. Because your containers will act as walls for the building, this decision will also impact the final size.
We recommend these buildings start at 20 feet wide and go up to 50 feet wide. Wider roof spans are available but may require custom engineering to meet load requirements.
You must also decide whether or not you want to mount the arches on the inside or outside of the container.
SteelMaster provides blueprints reviewed by an in-house professional engineer to make sure a building meets or exceeds building codes in your area. Whether it’s needed for permitting or not, getting wet-stamped blueprints that lay out your building’s design, profile, and structure is critical to the design process.
Now that you know the exact details of your building, it’s time to prepare for construction. Start by placing the shipping containers in the desired location and take final measurements.
In order to attach the roof to the shipping containers, you’ll use the provided steel base connector to mount on either the inside or outside edge of the top of the shipping container. How the plate is attached is up to the customer, but most weld the plate after consulting a local engineer.
Each arch uses one size nut and bolt and should be assembled individually on the ground before being lifted into place.
Lift each arch into place and bolt to the steel baseplate. Tighten nuts and bolts once all the arches are in place to complete the container cover roof.
From easy to complex, we provide configuration options that fit the needs of any industry.
| Customization Options | Open Ended Structure | Fully Enclosed Container Building |
|---|---|---|
| Endwalls | None needed. If it’s acting as equipment storage, keeping the ends open is an option | Can be customized to include any type of entryway that fits underneath the roof and can be aesthetically upgraded |
| Accessories | None needed. With no endwalls, you won’t require optional add-ons to complete the building | Steel endwalls, doors, and skylights are common options for enclosed structures |
| Doors | None needed | Can meet any door requirements, including man and/or garage doors |
The length of your container cover building depends on the number of containers you use, their size, and how you arrange them.
Shipping containers mostly range in size between, 20′ and 40′ long with a standard height of 8’ 6”, and will determine the length and final height of your container roof building.
The final container building size and square footage are a combination of the length of your containers with your desired width of the roof between them.
The smallest container cover building width we’d suggest is 20′ with the largest spanning 50′ wide.
SteelMaster can go as wide as 50’ in some cases but these buildings are custom designed per the request of our customers.
SteelMaster’s container cover structures can be wider than 50′; however, SteelMaster is happy to offer custom sizes for customers who have needs for structures larger than 50’ wide to ensure your area’s load requirements are met.
View our catalog to see how companies are using SteelMaster buildings to create standout spaces for work, storage, and more.
What’s inside:
Shipping container roof systems are designed to be as simple to erect as they are to use. Place your containers, attach a base plate for the roof, assemble arches on the ground, and lift and bolt them into place.
The smallest roof width we’d suggest is 20′ with the largest spanning 50′ wide. However, SteelMaster can design smaller buildings using only one container or more expansive buildings beyond 50′ wide depending on your geography, engineering load requirements, and budget.
A container cover building is versatile and can be an ideal solution for many applications. Our team will talk you through the basics, plus additional options to customize your building, including:
Yes! The durability of a steel roof makes it ideal for agricultural buildings like container barns and sheds. The heavy-duty steel combined with a metal shipping container protects against harsh weather and ensures agricultural goods and equipment remain dry and secure.
We hope some of our customers’ most impressive projects will inspire you to get started on your own Quonset hut structure. See all articles.
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