Choosing the Right Foundation Type for Your Metal Building: Cases, Uses, and Tips
Your metal building is only as strong as its foundation. Whether you go with soil, asphalt, or concrete slabs, your foundation bears the weight of your building, keeps everything level, and prevents erosion and decay.
In this guide, we’ll explore the pros and cons of each foundation type and how to choose the best option for your building project, no matter the size, location, or expected use.
Foundation Types for Metal Buildings
A metal building foundation typically comes in one of several types. These include:
| Foundation Type | Anchor Type | Pros | Cons |
| Soil Foundations | Auger Anchors/ Mobile Home Anchors | Well-suited for smaller agricultural and residential projects such as storage sheds or barns. | Subject to erosion and flooding. Limited strength |
| Asphalt Foundations | Spiked Rod Anchors | Often used for carports and home garages where the structure is placed on driveways. | Offers less strength and shorter lifespan than concrete |
| Concrete Foundations | Concrete Anchor Bolts | Considered the strongest option with the longest lifespan, this foundation type is a solid choice for larger projects. | More expensive than other options and will require professional crews. |
- Soil Foundations
Soil or gravel foundations are common for smaller outbuildings and agricultural structures where solid ground isn’t necessary. It’s an economical option but comes with the risk of washout and erosion after big storms.
- Asphalt Foundations
This foundation type is often used for carports and home garages where the building is anchored directly to the blacktop. Asphalt is a solid choice if you're hoping to cover your vehicles and RVs without a huge foundation cost.
- Concrete Foundations
Concrete slabs are some of the strongest and most popular foundation options. They’re designed to hold immense weight and provide decades of service with proper maintenance.
Things to Keep in Mind When Choosing Your Foundation Type
The type of foundation you choose will dictate more about how your building functions than you might expect, so it pays to choose wisely the first time. But how do I choose which foundation type is right for me? You’ll want to consider
How Much Will Your Building Weigh?
How do you plan to use your metal building? Will you store heavy equipment? If you're handling heavy-duty equipment or tackling large-scale projects, you may need a stronger foundation than dirt, soil, or asphalt.
Where Will Your Building Be Located?
Are you tackling agricultural projects? Is your building on rural property? Your foundation type may hinge on where you plan to locate your structure. Farm buildings in the countryside may only need a dirt foundation, while a finished metal garage may need something more substantial.
What Type of Weather Do You Encounter?
If you live in a region with heavy rainfall and high winds, you may need a foundation that’s resistant to flooding and washout.
Concrete Foundations Require a Professional Touch
While it’s possible to lay your own concrete foundation, this aspect of the job is generally better left to professionals. Concrete foundation experts have a keen understanding of the process, including measurements, soil types, thickness guidelines, frost lines, curing timeframes, and structural capabilities.
Letting the experts handle the foundation may cost more than tackling it on your own, but the risks far outweigh the benefits. Unreliable foundations can cause cracking, structural issues, building inspection violations, and even failure of the building itself.
Why Builders Trust Direct Metal Structures for Metal Building Needs
From small backyard sheds to large-scale commercial steel buildings, Direct Metal Structures is proud to be a premier choice for steel infrastructure. Our metal buildings are built tough with premium steel components, engineered for your climate, and created to protect your most important things.
They're backed by industry-leading warranties on framing, paneling, and craftsmanship and are made affordable on any budget, thanks to our wide range of financing plans and RTO packages.
Let Direct Metal Structures find the right building for your next project. Call our experts at 888-277-7950 and let us give you a full tour of our design process. We’ll provide you with a FREE price quote and create a structure ready to work for you, no matter the application.
FAQs About Metal Building Foundations
Do you have additional questions about metal building foundations? Below, we’ve answered some of the most common questions we receive:
How much does it cost to pour a metal building foundation?
Answer: For concrete slabs, you can expect to pay between $5 and $10 per square foot.
What’s the best foundation type for my metal building?
Answer: In most cases, a concrete slab will be the strongest foundation type for any job.
Can I install a metal building on gravel?
Answer: Yes. Gravel foundations are great for smaller applications, such as agricultural storage, rural garages, and backyard garages.
Do I need a building permit to build a metal building?
Answer: Yes. In most locations, you’ll be required to secure a building permit before breaking ground on any construction project. Failure to obtain the necessary permits can result in major fines and penalties.
Can I pour my own concrete foundation for metal buildings?
Answer: While possible, we don't recommend pouring your foundation on your own. For the best results, you'll want to leave it to an expert.
