A sturdy base is important to the longevity and structure of your shed foundation. A concrete shed base made from slabs is a solid and durable solution that will support garden sheds as well as other garden buildings. They prevent problems such as settlement, moisture damage and movement due to soft ground conditions.
Benefits of using a concrete shed foundation
A concrete shed foundation has numerous advantages that will keep your shed stable and long-lasting:
- Durability - concrete is an extremely durable material that will withstand all UK weather conditions
- Environmental resistance - concrete is environmentally resistant so your shed will be secure and functional for many years to come
- Low maintenance - once laid, a concrete base requires almost zero maintenance for shed owners
- Moisture resistance - unlike wood, concrete does not absorb moisture, so it reduces the risk of rot and decay especially in areas with high rainfall or humidity
- Quick to install - the installation process for a concrete base is simple and will save you time and effort
- Weight-bearing - concrete slabs withstand a lot of weight and are perfect for larger sheds or those that will house heavy machinery and equipment
All in all, in our opinion a concrete slab is the best base for a garden shed. This is whether this is for a concrete slab base or other forms of concrete (not slab-based).
Concrete slabs for sheds – are they a good base?
A solid base is essential for any shed as it affects its lifespan and structural integrity. Concrete slabs give you a solid and level surface for your shed, and aid in spreading the weight evenly. This attribute is especially important for larger sheds (10’x8’ and above) where uneven settlement can cause misalignment and damage over time.
Installing a concrete shed base prevents ground moisture issues as it lifts the shed above areas of water pooling and dampness. Unlike wood foundations that can rot and warp, a concrete base is a long-term solution that requires minimal maintenance.
By purchasing concrete slabs for sheds base use, you are ensuring your garden building is secure and stable which is important for protecting your tools and equipment inside.
Step-by-step Guide - How to lay paving slabs
Laying paving slabs for a shed base is an easily achieved DIY job that will make a sizable difference to your shed or other garden building installation. Follow these steps to install a solid paving slab base:
- Preparation – this step is so important and detailed that we provide a detailed step-by-step guide in the section below
- Ground levelling - dig the soil down to around 100mm. If the ground is soft or uneven consider using compacted sand or gravel as a sub-base for extra support. Use a rake to spread and level the compacted sand or gravel, then lay levelling bars across the area to make sure the ground is flat before laying the slabs
- Cutting the slabs - if needed use a concrete saw or masonry saw to cut the slabs to fit your design and size
- Setting up the screed board - lay the screed board on the compacted base and pull it across to level the surface evenly
- Laying the slabs - mix your concrete using a cement mixer, following the standard concrete mix ratio for maximum strength. Pour the wet concrete into the excavated area and smooth out with a trowel
- Setting the slabs - start laying the paving slabs in a staggered pattern, ensuring they fit together tightly. Use a spirit level to check each slab is level
- Finishing touches - once all slabs are laid fill the gaps with gravel and compact the surface to prevent movement
Step-by-Step Process - preparing the ground for paving
Ground preparation is important for a stable concrete shed base; here is the process:
- STEP 1 - Clear the area of any grass, debris, or rocks. Lay down a drop cloth to protect the surrounding ground from spills or debris during preparation
- STEP 2 - use a tape measure to mark out the shed base area
- STEP 3 - dig the ground to a depth of at least 100mm, depending on the thickness of your slabs
- STEP 4 - if the ground is soft or uneven, consider using compacted sand as a sub-base
- STEP 5 - ensure the ground is level to prevent issues with settling or shifting after installation
Materials, equipment and tools for laying slabs
If you are learning how to lay paving slabs, you will need the following essential items:
Tools for laying slabs
Ensure you have these tools:
- Cement mixer (if you opt to pour cement rather than use paving slabs)
- Gloves
- Rubber mallet
- Safety goggles
- Spirit level
- Tape measure
- Trowel or concrete float
- Screed board
Materials for laying slabs
The following materials will be needed:
- Compacted sand
- Cement (which forms into concrete)
- Damp-proof membrane
- Gravel
- Paving slabs
Equipment for laying slabs
Most of the following equipment will be useful:
- Broom
- Chisel
- Levelling spacers
- Plate compactor
- Shovel
- Wheelbarrow
- Concrete saw or masonry saw
- Rake
- Drop cloth
- Levelling bars
Concrete slab alternatives - What is the best base for a garden shed?
While concrete slabs have many benefits there are alternative shed bases that may suit your needs. Each has its own pros and cons so consider your needs, local weather and how much weight your shed will need to support. Ultimately while alternatives exist a concrete shed base made from slabs is often the most stable long-term.
Wooden bases
These are a common option but are prone to rot and require more maintenance than concrete.
Plastic bases
Our final alternative is plastic shed bases; these are lightweight and easy to fit but they are not as durable as a concrete base.
Paving slab dimensions and layout
When choosing paving slabs for your concrete shed base you need to consider standard sizes. Popular paving slab dimensions in the UK are 600mm x 600mm or 450mm x 450mm are common sizes. The layout of these paving slabs is crucial for an excellent shed foundation; staggering the joints between slabs will help with strength and stability. Ensure there is a slight slope to allow water to drain away from the shed to avoid water pooling. Measuring and laying out your paving slab area will make a huge difference to your shed base.
Maintaining your concrete shed base construction
To keep your concrete shed base in good condition and stable for years to come, maintenance is key. A well-maintained concrete base will be stable for many years. Here are some shed base maintenance tips:
- Clearance of debris - keep the area around the shed clear of debris and foliage, as this will trap moisture and cause gradual deterioration
- Drainage enhancements - if you notice ground moisture issues, consider improving drainage around the shed foundations
- Regular inspections - inspect the base regularly for cracks or wear, especially after bad weather
- Sealing - seal any cracks with a filler to stop moisture from penetrating inside the shed, which will weaken the structure
Conclusion
A concrete shed base made from slabs gives you stability, durability and moisture resistance. Installation and maintenance are key to the longevity of your shed foundation. Ensure you choose the right paving slab dimensions as a part of your project. By choosing concrete slabs you are investing in the stability and protection of your garden building. This ensures it will be functional and secure for years to come.
Frequently Asked Questions
Is any groundwork necessary on my end before the installation team arrives?
Before your shed installation team arrives, you will need to prepare the ground on which your shed will sit. Ensure the shed is level to the ground and is clear of any garden debris, including rocks, plants, and even weeds. If you have purchased a plastic base with your shed, the team will install this for you. Otherwise, your solid base of poured concrete or concrete slabs must be in place and ready to use before the installation team arrives.
Do I need a shed base when using gravel boards?
Yes, you need a shed base even when using gravel boards. The point of gravel boards is to protect the base of your shed from moisture, fungal infection and pests. Contrary to popular belief, gravel boards (wooden or concrete gravel boards) do not offer any structural support for the shed itself. Manufacturers recommend lifting your shed away from the ground using gravel boards in conjunction with a suitable shed base such as a concrete or paving slab base to promote shed health, longevity and durability. This ensures a level surface and proper drainage, essential for the shed’s stability.
Contact us
If you have any questions or need more information on concrete shed foundations or installation services please get in touch. Our team is here to help with all your shed base needs. Get in touch today for more information on the best base for your garden shed, use these contact methods:
- Calls - 0333 003 0515
- E-mails – send emails by using the contact form on our contact page
- Text chat - feel free to reach out to us via our live chat app for instant messaging. You can find this app located in the bottom left corner of your screen