Keter Sheds: Choosing The Right Foundation For Longevity

When it comes to Keter sheds, the company recommends building on solid and level ground. While Keter sheds are sturdy and come with a heavy-duty floor panel, the right foundation is crucial for stability, moisture protection, and improved air circulation. The best foundation for a Keter shed depends on factors such as the shed's size, local climate, and intended use. Common options include gravel bases, concrete slabs, wooden piers, and plastic shed base kits, each with advantages in stability, durability, and cost-effectiveness.

Gravel base

A gravel base is one of the most cost-effective foundations for a Keter shed, making it ideal for those on a budget. It also provides excellent drainage, which is why it is suitable for areas with heavy rainfall.

To create a gravel base, you will need to level the ground and lay down a thick layer of compacted gravel. This process ensures that your Keter shed has a stable foundation that can withstand uneven settling and provides proper drainage to prevent dampness and mould growth.

When preparing the site, it is crucial to clear away any debris and ensure proper drainage. You can do this by laying a membrane underneath the gravel base to prevent weeds from growing and affecting the stability of your shed.

While a gravel base is a more straightforward option compared to concrete, it is still essential to ensure that the ground is level. This attention to detail will ensure that your Keter shed doors open and close properly, and the weight of the roof is evenly distributed, preventing any leaning or sagging.

Additionally, anchoring your Keter shed to the gravel base is vital to enhance its stability and protect it from strong winds. You can achieve this by using anchor screws suitable for the gravel material.

Overall, a gravel base is a great option for those seeking a cost-effective, stable, and well-drained foundation for their Keter shed.

Concrete slab

A concrete slab is a good choice for a Keter shed foundation, providing a durable and long-lasting base suitable for heavy or larger sheds. It is important to note that a concrete base is a permanent addition to your garden and requires more labour to install compared to other options. However, it offers exceptional stability, durability, and protection.

To install a concrete slab, you will need to prepare the ground by levelling it and ensuring proper drainage. This involves removing debris, levelling the surface, and ensuring adequate drainage to promote the longevity of your shed. You will also need to build a frame to contain the wet concrete. This can be a strenuous task, and you may need to hire a concrete mixer.

Another important consideration is the environmental impact of concrete. It is incredibly environmentally unfriendly, much more so than other foundation options. Therefore, it is recommended only when absolutely necessary, such as for very large sheds or garden buildings that require solid foundations.

Overall, while a concrete slab provides a strong and durable foundation, it may not be the best choice for everyone due to the labour and environmental considerations. It is crucial to weigh the benefits against these factors when deciding on the foundation for your Keter shed.

Wooden piers

Planning and Site Preparation:

• Check local regulations and building codes: Before starting construction, it's important to consult your local building department to understand the specific requirements and restrictions for shed foundations in your area.
• Choose a flat and stable location: Select the flattest and most stable part of your yard for the shed foundation. This will ensure a solid base for your structure.
• Prepare the site: Clear away any debris, vegetation, or obstacles from the chosen site. Ensure the ground is level and well-drained to promote the longevity of your shed.

Materials and Tools:

• Treated wood posts: Use pressure-treated wood posts that are resistant to moisture and insect damage. The size and number of posts will depend on the dimensions of your shed.
• Concrete: You will need concrete to set the wood posts into the ground and ensure a sturdy foundation.
• Tools: Assemble the necessary tools, such as a post hole digger, shovel, laser level or string level, marking paint, tape measure, and any other specialized equipment you may require.

Construction Process:

• Mark the locations for the wooden piers: Using your laser level or string level, mark straight lines at each corner of the shed. Ensure there are no tree roots or utility lines in the area. If your shed will be adjacent to a fence or driveway, use that as a reference point to ensure the first side of your foundation is parallel.
• Determine the grade and site slope: Measure the slope of your site using a laser level or other leveling tools. This step is crucial to ensure the foundation is level and to compensate for any variations in elevation.
• Excavate the pier holes: Dig holes for the wooden piers using a post hole digger or power auger. The depth of the holes should be below the local frost line, typically at least 12 inches. Check local building codes for specific requirements.
• Set the wood posts: Place the treated wood posts into the excavated holes. Ensure they are level and properly aligned. You may need to use temporary supports or braces to hold them in place until the concrete sets.
• Pour concrete into the holes: Fill the holes with concrete, ensuring it surrounds the wood posts completely. Use a laser level to check that the tops of the piers are level. Allow the concrete to cure for several days before proceeding.
• Install shed anchors (optional): If desired, you can embed concrete anchor straps or L-brackets into the concrete piers to secure the shed's floor frame. Make sure to position the hardware before the concrete hardens.
• Backfill and compact the soil: Once the concrete has cured, backfill the remaining space in the holes with dirt and compact it down. This will help stabilize the piers and provide additional support.

Additional Tips:

• Consult a professional: If you're unsure about any aspect of the project, consider consulting a professional contractor or a local building authority. They can provide guidance and ensure your foundation complies with local regulations.
• Use pressure-treated lumber: When selecting wood posts, opt for pressure-treated lumber that is rated for ground contact use. This will help prevent premature rot and extend the lifespan of your foundation.
• Ensure proper drainage: Incorporate gravel or other drainage measures around the foundation to promote water runoff and protect against moisture-related issues.
• Consider the size and weight of your shed: The number and spacing of wooden piers may vary depending on the size and weight of your Keter shed. Consult a structural engineer or refer to local building guidelines to determine the appropriate number and spacing of piers for your specific shed.

Plastic shed base kits

Plastic shed bases are a good choice for those who want a quick and easy installation process. The grids are lightweight and can be easily carried and placed into position. They are also a good option for those who want a stable base that is suitable for various shed sizes.

However, it is important to note that plastic shed bases require a level surface before installation. This can involve quite a lot of preparation work, such as marking out the area, lifting any turf, digging, and adding a layer of sand or gravel to create a level surface.

Overall, plastic shed base kits offer a stable, permeable, and environmentally friendly foundation for a shed. They are easy to install and suitable for all types of sheds, but the ground must be levelled properly before installation.

Building without a base

Building a Keter shed without a base is possible but it is not recommended by the manufacturer. All Keter sheds come with a heavy-duty floor panel, but the manufacturer recommends building the shed on solid and level ground.

Building directly on the ground may be suitable if you plan to use the shed for a short period of time or as a temporary solution. However, this could result in reduced durability and protection. For small, lightweight garden sheds that don't require extensive structural support, placing them on compacted soil might be acceptable. It is crucial to ensure proper drainage and consider using a moisture-resistant coating on the shed.

Before constructing your Keter shed, it is important to check local building codes and regulations, as well as prepare the site by clearing away debris, levelling the ground, and ensuring adequate drainage.

Frequently asked questions