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.
Garden Sheds in Castlewellan
Compare Garden Sheds Prices in Castlewellan
Garden Sheds in Castlewellan
Garden sheds are a significant component of any functional garden space. They provide storage for cumbersome garden tools, as well as for other tools. A larger sized shed might even offer enough space for plant potting or a general workshop. Alternatively, a large shed could be utilised as an inside seating area. Garden sheds are available in a huge variety of sizes and can be specified to your exact requirements, providing you complete control over the amount and placement of windows, type, size and location of door, and design of roof. Garden sheds usually come in one of three materials. Wooden sheds are the common design and can be integrated well into any garden creating a natural look, especially if the wood used for the shed is matched to neighbouring fences. Wooden sheds are still extremely popular, although they will demand maintenance by retreating or staining the wood to preserve the life of the shed. Garden sheds are also manufactured from metal, which is very strong and therefore great for storage of tools and other equipment. Metal sheds also require very little maintenance. The final material for garden sheds is plastic, which in modern examples is a lot more resilient than might be expected. When considering a garden shed, it's crucial to make sure that you choose one which will fit in your garden space. Garden sheds should be placed on a level area, and will require a base to be built as a foundation. This base could be made 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 Castlewellan
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
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Garden shed installation cost in Castlewellan 2025
Labour cost | £420 | |
Material cost | £150 | |
Waste removal | £30 |
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FAQs
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.
- Remove any existing fascia boards Remove the fascia boards and the old felt if you’re re-felting.
- Measure the shed roof Measure the roof, taking into account that you should leave around 50mm for overlaps at the eaves and 75mm at the gable ends. You’ll probably need 3 pieces of felt, but some smaller sheds only need 2.
- Apply felt to the roof Once you’ve cut the felt to size, apply the each piece to the roof, pulling it tight. Then nail along the length of the roof at 100mm intervals. For nails at the bottom edge, they can be wider – around 300mm. If you’re adding a piece of felt in the middle of the shed along the apex, fix it using adhesive, then nail it at the lower edge at 50mm intervals.
- Tidy up the overhangs Fold down the felt at each overhang and nail it securely. Cut a slit in the overhang at the apex using a pen knife, then fold that down and nail at 100mm intervals along the gable. If you like, you can add fascia boards to keep the shed looking neat. Use wood nails to secure them and then trim away any excess felt.
- Tongue and groove timber boards
- Boards for the ledges and braces, at least 20mm thick
- Nails
- Hammer
- Saws, including a circular saw
- Chisel
- Mallet
- Cut your boards to size If you can’t buy boards at the right height and width for your door, cut the boards to length using a circular saw. Don’t forget to sand and treat any cut ends with timber preservative. Lay out the boards in the best arrangement for your shed door, with the inside of the door facing up.
- Arrange the ledges and braces On most shed doors, you’ll probably need 3 boards across the back of the door to form the ledges. The ledges keep the door straight and keep the boards of the door together. The braces are the parts of the door that slope down to form a ‘Z’ shape between the ledges. Ensure that the braces are sloped up from the bottom and middle hinge to stop the door from sagging as the timber expands and contracts in the weather. Once you’re happy with the arrangement, mark the spots on the boards where they will meet and cut out of the housings using a chisel and mallet.
- Put the door together Use clamps to pull the boards together and hold the ledges and braces in place. Nail from the front of the door through the boards and ledges to fix them. Secure the ledges and braces with screws; you may want to pre-drill and countersink holes to prevent the wood from splitting. Remember to treat them with preservative if you do.
- Fix the shed door hinges Make sure you measure carefully before attaching the hinges, ensuring you know where the pin sits in relation to where the door opens.
- Treat the door and add locks and handles Apply some wood oil, like linseed or teak oil, to help prevent water damage. Then add locks or handles to your shed to help keep it secure. If you’d rather leave it to the professionals, there are plenty of specialists that will be able to make a shed door for you, or even put up an entire shed.

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