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Keter Signature Shed ashwood brown on shed base in backyard

A Shed Foundation Dilemma: Do All Sheds Need a Base?

So, you're thinking about whether your shed needs a base? The humble shed is a fantastic addition to any property, whether for storage, a workspace, or a cozy retreat. But before you start building, you have a critical decision: Should you put it on a shed foundation or just set it up directly on the ground? After all, an outdoor shed with a floor already has a base, right? Wrong. Let’s talk more about why a shed base is so important to the success of your shed.

The Importance of Shed Bases for Outdoor Storage

So, what is a base? A shed base, also known as a foundation, is a structural support system that serves as a sturdy platform on which the shed rests. While some might consider it an unnecessary extra step, having a proper shed base brings numerous advantages.


  • Stability and Durability: A well-constructed shed base provides stability, ensuring it can withstand varying weather conditions, including heavy rain, snow, and strong winds. Elevating the shed off the ground prevents it from settling unevenly, which could lead to structural damage over time.
  • Improved Air Circulation: Outdoor storage sheds with proper bases allow air to circulate beneath them. Backyardoverhaul.com says, “...I would recommend making the base at least 4 inches high from the ground. This will allow the proper air to circulate under most sheds.” So, building the base correctly plays a crucial role. This can also help reduce the chances of dampness and mold growth. 



Types of Shed Bases

keters shed foundation

Several shed base types are available for storage sheds with floors, and they cater to different needs and budgets. Here are some standard options:


  1. Gravel Base: Involves leveling the ground and laying down a thick layer of compacted gravel. Provides stability and drainage. Suitable Conditions: Cost-effective; ideal for areas with heavy rainfall
  2. Concrete Slab: A solid and level shed foundation is created by pouring concrete into a prepared frame. Offers exceptional durability and protection. Suitable Conditions: Suitable for long-term use; provides excellent moisture protection
  3. Wooden Piers: Involve setting treated wood posts into the ground to support the shed. Suitable for uneven terrain and relatively easy to construct. 
  4. Suitable Conditions: Works well on uneven ground and provides a sturdy support system
  5. Plastic Outdoor Shed Base Kits: Consists of interlocking plastic grids filled with gravel or soil. Offer stability, permeability, and easy installation. Suitable Conditions: Provide a stable base; ideal for various shed sizes
  6. Pavers: Requires arranging and leveling pavers over a compacted base. Offers a stable, durable surface. Suitable Conditions: Ideal for smaller sheds and areas where a decorative base is desired.


If you’d like to learn more about the shed base types and how to create a shed base, be sure to take a look at our blog How to Build a Shed Base.


What Bases Are the Best for Outdoor Storage Sheds?

The best base for a shed depends on several factors, including the shed's size, the local climate and the intended use of the shed. Generally, a well-constructed and level foundation is crucial to ensure the shed's stability and longevity.

Concrete slabs are a good choice as they provide a durable and long-lasting base suitable for heavy or larger sheds. However, another very popular option is a gravel base. They provide better drainage than other options. Another eco-friendly option is using pressure-treated timber frames set on top of leveled and compacted gravel, providing adequate support while being easier to install. 

Ultimately, the best base for an outdoor storage shed is one that meets your budget, specific needs, and local building regulations. Before making a decision, it's really important to consult with a professional or local building authority to make sure you’re being compliant with the standards and regulations in your area.


Tips for Shed Construction

Keter small Signature vertical shed - color brown

Regardless of whether you choose to build a base or not, here are some essential tips for shed construction:

  • Check Local Regulations - We mentioned this above, but before starting your shed project, check local building codes and regulations.
  • Proper Site Preparation - Prepare the outdoor storage site by clearing away debris, leveling the ground, and ensuring adequate drainage for your outdoor shed with a floor. A level and well-drained site promotes the longevity of your shed.
  • Quality Materials and Construction - Whether you opt for a base or not, use high-quality materials and construction techniques to ensure the shed's stability and durability.
Open door signature shed with backyard items inside

So, do I need a Shed Base for my Outdoor Shed with a Floor?

The decision to build a shed on a foundation or directly on the ground really shouldn’t be done. Abase provides stability, moisture protection, and improved air circulation that sheds really need.

Consider your specific needs and budget, and consulting a professional can help you make the right choice for your shed project. Whether with a sturdy concrete slab or a simple gravel base, your well-crafted shed will undoubtedly become a valuable asset on your property for years.

Some companies also have storage sheds with floors included. For example, all Keter sheds are incredibly sturdy and have a heavy-duty shed floor panel included. However, we highly recommend building the shed on solid and level ground with a shed base underneath.

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