A strong concrete base is one of the most reliable foundations for a garden shed or outdoor building. A properly installed shed base keeps the structure level, prevents movement, and protects the shed from damp or ground moisture.
At Sussex Ready Mix Concrete, we supply high quality concrete mixes suitable for shed bases and garden buildings across Sussex. Our volumetric mixers deliver fresh concrete mixed on site, ensuring the exact quantity required with consistent mix quality for reliable results.
Whether you are installing a small storage shed, a workshop, or a garden room, our team can help supply the right concrete mix for a durable and stable base.
A concrete base provides a solid and level foundation for outdoor buildings. Without a proper base, sheds can shift over time, causing structural issues and doors or windows to become misaligned.
Concrete shed bases help to:
Provide a stable and level surface for the building
Prevent sinking or movement on soft ground
Protect the shed from ground moisture
Improve the lifespan of the structure
A well constructed concrete base ensures your shed remains secure and usable for many years.
For most domestic shed bases, a C20 concrete mix is commonly used. This provides the strength needed for light structures while remaining easy to work with during installation.
For larger garden buildings, workshops, or sheds storing heavier equipment, a slightly stronger mix such as C25 concrete may be recommended to increase durability and load capacity.
Our team can help recommend the most suitable mix depending on the size of your shed and the intended use of the building.
The thickness of a concrete shed base depends on the size and weight of the structure. For most standard garden sheds, a concrete slab thickness of around 100 mm is typically sufficient.
Larger garden rooms or heavier workshop buildings may require a thicker base of 125 mm to 150 mm for additional strength and stability.
A compacted sub base beneath the concrete also helps improve durability and prevent movement over time.
Proper preparation is essential for a long lasting concrete base. Typical preparation steps include:
Marking out the shed base area
Excavating the ground to the correct depth
Installing a compacted hardcore or MOT Type 1 sub base
Adding a damp proof membrane if required
Setting up timber formwork to hold the concrete
Once the ground preparation is complete, the concrete can be poured, levelled, and finished to create a stable base for the shed.
A concrete base provides a solid and level foundation for outdoor buildings. Without a proper base, sheds can shift over time, causing structural issues and doors or windows to become misaligned.
Concrete shed bases help to:
Provide a stable and level surface for the building
Prevent sinking or movement on soft ground
Protect the shed from ground moisture
Improve the lifespan of the structure
A well constructed concrete base ensures your shed remains secure and usable for many years.
For most domestic shed bases, a C20 concrete mix is commonly used. This provides the strength needed for light structures while remaining easy to work with during installation.
For larger garden buildings, workshops, or sheds storing heavier equipment, a slightly stronger mix such as C25 concrete may be recommended to increase durability and load capacity.
Our team can help recommend the most suitable mix depending on the size of your shed and the intended use of the building.
The thickness of a concrete shed base depends on the size and weight of the structure. For most standard garden sheds, a concrete slab thickness of around 100 mm is typically sufficient.
Larger garden rooms or heavier workshop buildings may require a thicker base of 125 mm to 150 mm for additional strength and stability.
A compacted sub base beneath the concrete also helps improve durability and prevent movement over time.
Proper preparation is essential for a long lasting concrete base. Typical preparation steps include:
Marking out the shed base area
Excavating the ground to the correct depth
Installing a compacted hardcore or MOT Type 1 sub base
Adding a damp proof membrane if required
Setting up timber formwork to hold the concrete
Once the ground preparation is complete, the concrete can be poured, levelled, and finished to create a stable base for the shed.
Sussex Ready Mix Concrete is your local trusted provider of high-quality concrete and screed. Enjoy fast delivery, with same or next-day options available across the region. Unsure if we cover your area? Quickly check our areas we cover page or give our friendly team a call.
Take a look where we deliver our ready mix concrete throughout East and West Sussex.
