How to build a shed base on uneven ground?

Building a shed base on uneven ground can be as easy as digging out a sub-base and checking that it’s level. You can dig down until the soil is light brown and rather compact, then work out where the ground is uneven and move soil around to compensate. Add a weed-blocking membrane down then put plastic grids in to act as your shed base or continue to make a sub-base for paving slabs or concrete. However, you could also build a timber shed base on uneven ground using concrete blocks to level it out. Mark out the area and dig the top layer of soil, trying to get the ground as flat as possible. Build a timber frame to size. Measure out 4 rows of 3 blocks to create good weight distribution and lay in place. Underneath each block, dig around 50mm wider than the blocks and about 150mm deep. Fill the hole with pea gravel until it’s flat. Place timber planks along the rows of blocks and see how level it is. Add or remove blocks where necessary. If it’s only a small difference, use shingle underneath the timber until it’s level. Nail your timber shed base to the timber planks to create a sturdy base for your shed. If you’ve got any questions about building a shed base on uneven ground, it’s best leaving it to the pros. Get in touch with a range of builders who will be able to offer you a quote.

Garden Sheds in Mountain Ash

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Garden Sheds in Mountain Ash

Garden sheds are a critical component of any practical garden space. They can provide storage for heavy garden tools, as well as for other tools. A sizeable shed might even offer enough room for plant potting or a general workshop. Alternatively, a substantial shed could be utilised as an indoor sitting area. Garden sheds come in an enormous selection of sizes and can be specified to your exact requirements, providing you with complete control over the number and position of windows, type, size and location of door, and style of roof. Garden sheds commonly are available in one of three materials. Wooden sheds are the common style and can be integrated well into any garden creating a natural look, particularly if the wood used for the shed is matched to bordering fences. Wooden sheds remain very popular, although they will need maintenance by retreating or staining the wood to maintain the life of the shed. Garden sheds are also constructed from metal, which is very resilient and therefore great for storage of tools and other equipment. Metal sheds also require hardly any maintenance. The final material for garden sheds is plastic, which in modern examples is a lot more durable than might be expected. When contemplating a garden shed, it's important to ensure that you choose one which will fit in your garden space. Garden sheds will need to be sited on a level area, and will need a base to be built as a foundation. This base could be produced from either concrete, paving, gravel or a floating wooden base, but will have to be the right size for your shed and able to support the weight of your shed when loaded.

Average Garden shed cost in Mountain Ash

The typical cost of Garden shed is £600. Costs vary based on the materials and the organisation selected. The upper price range can be as high as £690. The material costs are typically around £150

Average price per Garden shed job in 2025

Avg. price low	Avg. price low £475
Avg. price	Avg. price £1,050
Avg. price high	Avg. price high £1,595

£1700

£1275

£850

£425

£0

Prices based on actual Garden shed costs for Mountain Ash, as reported by local LeadsDoWork members.

Garden shed installation cost in Mountain Ash 2025

	Labour cost	£420
	Material cost	£150
	Waste removal	£30

Time frame: 1-2 days

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Garden shed Projects in Mountain Ash in March 2025

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Mountain Ash

Mountain Ash is a town (and also previous neighborhood) in the Cynon Valley, within the Region District of Rhondda Cynon Taf, Wales. At the 2001 census, Mountain Ash had a population of 7,039 boosting to 7,374 at the 2011 Census. The Mountain Ash geographical location includes as well as includes the areas and villages of Cefnpennar, Cwmpennar, Caegarw, Darranlas, Fernhill, Glenboi and Newtown. Mountain Ash lies within the historical area boundaries of Glamorgan. The town lies concerning 4.5 miles southern of the town of Aberdare and roughly 19 miles northwest of Cardiff. The town and area of Penrhiwceiber exists around a mile south of Mountain Ash. From a management viewpoint, Mountain Ash is divided right into two selecting wards: Mountain Ash West takes into account the town centre, along with the areas of Miskin, Darranlas, Fernhill and Glenboi; Mountain Ash East comprises the staying areas of Cefnpennar, Cwmpennar, Caegarw and Newtown.

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FAQs

Yes, your shed does need a base. This is to give it a solid, level foundation. Open soil will not help with the longevity of the shed itself or the contents within. The best materials to use to make your shed base are concrete, natural stone or wood.

Try to put your shed in open space, away from trees, bushes and other buildings. This will help to protect it from falling branches and sap. It will also mean that you can access all sides of the shed for repair and maintenance purposes. Make sure you take a look at garden shed planning rules before you pick a final spot for your shed.

If you spend time in your shed, whether you use it as a summer house or an office, you’ll probably want a bit of insulation in there for when it starts to get chilly. There are different ways to insulate a shed, and some aren’t expensive at all. You just need to decide what the best way for you is. Bubble wrap If you don’t spend too much time in your shed, bubble wrap is an easy and cheap way to insulate your shed. Simply attach bubble wrap strips to the framing of the shed to create an air gap, then screw or nail a sheet of MDF over the top. Fibreglass wool Fibreglass wool is a good option if you want to insulate your shed further. Make sure you use safety equipment to protect your eyes, nose, mouth and hands when you’re handling it. Tack a breathable membrane to the inner walls of the shed, then place the fibreglass wool on top. Add a sheet of MDF or wood board, ensuring all the fibreglass is covered. Insulating shed windows and doors You'll often feel draughts through shed windows and doors, and these are easy to block up. You can use foam filler or liquid wool along the edges of the windows and gaps in the door frame. Let it dry out after you’ve applied it then cut off any excess. Insulate the floor If you’re building a new shed, you could fit some underfloor insulation to the grid of the shed base – it could help reduce up to 40% of heat lost through the shed floor. But if your shed’s already built, you can line the floor with a breathable membrane then lay a rug or piece of carpet down. The membrane underneath stops any damp or rot forming, so it’s best not to lay a rug straight down on the shed floor.

Building a shed base on uneven ground can be as easy as digging out a sub-base and checking that it’s level. You can dig down until the soil is light brown and rather compact, then work out where the ground is uneven and move soil around to compensate. Add a weed-blocking membrane down then put plastic grids in to act as your shed base or continue to make a sub-base for paving slabs or concrete. However, you could also build a timber shed base on uneven ground using concrete blocks to level it out.

Mark out the area and dig the top layer of soil, trying to get the ground as flat as possible.
Build a timber frame to size.
Measure out 4 rows of 3 blocks to create good weight distribution and lay in place.
Underneath each block, dig around 50mm wider than the blocks and about 150mm deep. Fill the hole with pea gravel until it’s flat.
Place timber planks along the rows of blocks and see how level it is. Add or remove blocks where necessary. If it’s only a small difference, use shingle underneath the timber until it’s level.
Nail your timber shed base to the timber planks to create a sturdy base for your shed.

If you’ve got any questions about building a shed base on uneven ground, it’s best leaving it to the pros. Get in touch with a range of builders who will be able to offer you a quote.

Other Top Projects in Mountain Ash

Customer Reviews

Overall rating:

Mountain Ash Garden shed installers are rated 4.8 out of 5 based on 4 reviews of 73 pros.

The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Garden shed projects that have been connected with Garden shed pros to help them. All Garden shed contractors All Mountain Ash Garden shed contractors

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