Visit our Showsite15 x 10 (4.53m x 3.09m) Mercia Modular Overlap Shed
Product Code - 20010027
2ND MARCH
Usually delivered: Use Pick A Day delivery below for your earliest delivery date to your Post Code.
Description
Designed for the serious gardener or DIY enthusiast, this 15 x 10 shed is constructed from rustic overlap cladding, offering a traditional aesthetic that blends naturally with the outdoors while helping rainwater run off the exterior. The timber boards are supported by a solid 28mm x 28mm internal frame, ensuring the stability required for such a large structure. The defining feature of this modular model is the inclusion of three double windows along the extensive 15ft side; this significant glazing ensures that light reaches every corner of the room, making it an inviting environment for prolonged use. Access is provided by wide double doors at the gable end, secured with a hasp-and-staple latch, ready for a robust padlock (not included).
The floor and roof are manufactured from solid sheet board, a durable material selected to bear the weight of heavy workshop equipment, large garden furniture, and machinery. To help resist the elements, the apex roof is finished with mineral felt, creating a functional barrier against moisture ingress. The modular nature of the panels allows for a straightforward assembly of this large building, which offers enough space to function as a home gym, a large workshop, or a comprehensive storage facility. Please note that the shed is supplied as a blank canvas; any shelving or workbenches shown in images are for illustration purposes only.
Proudly manufactured in the UK using ethically sourced timber, this Mercia shed is a sustainable solution for substantial garden needs. It is delivered as a comprehensive DIY kit, complete with all necessary fixtures and detailed instructions. To ensure the structure remains sound and to validate the conditional 10-year anti-rot guarantee and 1-year manufacturer’s warranty, it is essential to treat the timber with a high-quality preservative and a waterproof top coat immediately upon construction and annually thereafter.
What Makes Overlap Sheds a Good Option?
If you require a classic garden shed without the premium price tag, overlap construction is an excellent choice. The layered timber boards create a familiar rustic appearance while offering dependable storage space. Due to the straightforward manufacturing process, overlap sheds remain one of the most cost-effective building types available on the market.
Walls, Floor, and Roof
The walls are constructed from traditional 7mm overlap boards, a design that accommodates natural timber movement and aids water run-off. These boards are secured to a sturdy frame to ensure a lasting structure. The shed features an OSB (Oriented Strand Board) roof and floor; this strong sheet material is formed by compressing layers of wood strands, providing a durable and economical surface for your storage needs. The solid sheet roof is finished with a weatherproof felt cover for comprehensive protection.
Fixtures and Fittings Included
Your shed is supplied with high-grade roofing felt for reliable weather protection, along with all necessary screws, fittings, and fixings for assembly. We also include detailed instructions to help you assemble your shed efficiently and with confidence.
Choosing Between Overlap & Shiplap
In overlap sheds, the cladding boards sit one on top of the other to form the walls. This creates a timeless, rustic appearance and allows for a degree of natural ventilation, which can help to limit condensation. Because they are easy to manufacture, overlap sheds are an attractive choice for cost-conscious buyers.
Shiplap sheds are constructed using tongue-and-groove cladding that interlocks for a tighter fit. This results in improved weather protection, increased rigidity, and a smoother exterior profile. While they sit at a higher price point, shiplap sheds are a superior option for those requiring stronger construction and enhanced long-term performance.
Deciding Which to Choose:
Go for Overlap when you need:
- A budget-friendly solution.
- Standard storage space for typical garden equipment.
- Infrequent entry or light use.
- A timeless, rustic shed look.
Choose Shiplap when you need:
- Enhanced defence against wind and rain.
- A smarter, smoother visual finish.
- Regular access and ongoing use.
- Reinforced panels for longer service life.
Guarantee
Every shed is supplied with a standard 10-year anti-rot guarantee and a 12-month manufacturer's warranty, giving you long-term confidence in your purchase.
Wooden Shed Maintenance Requirements
The shed has timbers with a dip-treated base coat to protect them during transit. You must apply a preservative and waterproofing topcoat immediately after installation. Using the treatment after installation, followed by consistent annual treatment of the wooden shed, will maintain the high-quality finish and is required for the 10-year anti-rot guarantee. A 1-year manufacturer's warranty is included as standard.
Optional Upgrades
Professional Installation
This wooden shed is supplied flat-packed for self-assembly. For ultimate convenience, you can select our professional installation service. Once your order is placed, the manufacturer’s team will send a pre-installation questionnaire to confirm that your site is suitably flat and level, and that access is clear. Please note that the installation team cannot dismantle or remove old buildings. Whether you build the shed yourself or use our service, please ensure a 24-inch (60cm) clearance is left around the entire structure for assembly and maintenance.
Wooden Shed Base Kit
A solid, level base is vital for the longevity of your shed. While this shed includes a floor, the optional base kit attaches to it to provide essential support and help create a level surface. It offers a fast and simple DIY alternative to laying concrete or paving slabs. The kit consists of a robust framework made from UC4 incised timber, pressure-treated to the highest standard for permanent ground contact.
TimberArmour Pressure Treatment
Select TimberArmour pressure-treated timber for enhanced long-term durability. In this process, preservative is forced deep into the wood to help resist rot, fungal decay, and moisture, significantly reducing upkeep and extending the life of your shed. This option removes the need for immediate treatment upon assembly. While pressure treatment protects the timber against rot and decay, we recommend applying a breathable, waterproof timber treatment after installation. This helps limit moisture penetration and surface weathering, maintains the building’s appearance and durability, and ensures the guarantee remains valid.
Roof Felt Upgrade
Upgrading to superior roof felt provides your shed with stronger weather protection. This material is approximately 50% thicker than standard felt, combining a glass-fibre surface with a heavyweight bitumen base to create a tough, waterproof barrier. It is available in Dark Grey or Light Grey for a clean, durable finish.
Floor Support Pack
Extra Strength Floor Support Packs add cost-effective reinforcement to your shed floor. Fitted between standard joists (fixings not supplied), they increase stability and are recommended if you intend to store heavier items, such as lawnmowers or workshop equipment.
Features:
Guarantee - 10-year anti-rot dipped treated
Timber Source - UK made from sustainably sourced timber
Walls Construction - 7mm overlap
Floor - 9mm OSB solid timber boards for handling heavy loads
Roof Style - Apex
Roof - 8mm OSB with weatherproof mineral felt
Frame - 28mm x 28mm for strength and stability
Floor Bearers - 28mm x 28mm pressure treated
Windows - 3x Double windows
Doors - Double
Lock Type - Hasp & staple
Treatment - Dip treated (application of preservative and waterproof coat required)
Make the Most of Your Shed
This compact shed is particularly valuable for smaller gardens where floor space is at a premium. It serves as an excellent dedicated home for long-handled tools, spades, forks, and potting equipment that often clutter patios or larger garages. By designating this area for your gardening essentials, you can keep your primary outdoor living areas tidy and hazard-free.
Beyond simple tool storage, the shed can be utilised to help protect seasonal items during the colder months. It offers a convenient place to store plant pots, cushions, or small garden ornaments that might otherwise suffer from winter exposure. With the addition of simple shelving (sold separately) or hooks, the vertical space within the apex roof can be optimised to store even more, ensuring every inch of the footprint is used effectively.
About Mercia
Mercia Garden Products is proud to be a British business with over 140 years of experience. They offer a variety of products ranging from traditional garden sheds, summerhouses, playhouses, and garden bars to greenhouses, fencing and garden storage solutions. All their products are manufactured in the UK using timber sourced from sustainable forests and the most advanced manufacturing techniques. Mercia focuses on innovating and improving its products while maintaining customer satisfaction, including ensuring safety for both customers and staff.
The wooden shed’s quality and durability are guaranteed by a 10-year anti-rot warranty, providing peace of mind. Regular treatment with a wood preservative is required to maintain this protection, securing the beauty and structural integrity of the timber shed for the years to come.
Delivery
ALL DELIVERIES ARE DELIVERED TO KERBSIDE OR DRIVEWAY. All of our Mercia products are delivered flat packed other than fence panels (which are delivered fully constructed), direct to your home, and are supplied with a set of instructions to support assembly.
Booking Delivery
You will be required to book your delivery date at the time of placing your order (except for Metal Shed). Our 'Request a Delivery Date' service is available to the majority of areas and you'll find that the majority of the UK postcodes are FREE but some areas may incur a delivery surcharge and some postcodes are not covered at all. Select a 'requested delivery date' by entering your postcode in the 'Request a delivery date' section above. You will also be notified at this time if your area incurs a surcharge or delivery is not covered in your area.
Prior to Delivery
On the morning of your delivery date, you'll be sent an update by text with an estimated 2-hour delivery slot (this update can only be provided where a mobile number has been supplied on the billing address section at the time of checkout) together with a link to the manufacturer delivery portal where you'll be able to track your order.
Please note: Mercia Metal Sheds ONLY - your order is delivered by a courier you will not be notified prior to the delivery. If you are not in on the day of the delivery you will be carded and asked to contact the courier to arrange a new mutual delivery date. The estimated delivery lead time for Mercia's Metal sheds is identified on the product for the metal shed. Lead times are on working days (Monday - Friday) excludes Bank Holidays. These estimated lead times are provided by the manufacturer. Some remote areas will take a little longer.
Upon Delivery
Your order is delivered either kerbside or driveway and will be delivered on either a 3.5T, 7.5T or 18T Lorry. Unfortunately due to health and safety and insurance liabilities the driver will not be able to take your goods around to the back of your property but may upon request place the product at the side of the house if there are no access or restriction issues. We would not risk damaging your property whilst delivering a product to an unsafe location. Unfortunately, we will not be able to go through your property.
We would recommend against arranging for a third party to install the building before it's been delivered and checked that all parts are present, as we cannot be held liable for any third-party costs.
Orders with Assembly
The lead time for our installation option is around 7 weeks from the date of order. With the installation option, the majority of orders will have their delivery and installation on separate days; there will be a small number of orders which will have delivery and installation on the same day. You will be advised by the manufacturer's installation team which category your order falls into.
Depending on the installation option for your order, you will be contacted within the delivery timescale and given a date for either delivery/assembly on the same date or a separate date for delivery and assembly.
Specification
Quickview
The 15 x 10 Mercia Modular Overlap Apex Shed represents the ultimate garden building for those requiring extensive utility, effectively bridging the gap between a large workshop and a timber garage. Spanning an impressive 15ft length with a triple array of windows, this structure offers a bright, cavernous interior adaptable to any requirement, from heavy-duty storage to a professional-grade hobby room. Key features include:
- Colossal Capacity: The 15ft x 10ft footprint provides a massive internal volume, allowing for distinct zoning of storage and active workspaces.
- Abundant Natural Light: Three double windows run along the 15ft length, ensuring the deep interior remains well-lit and practical.
- Broad Access: Double doors in the gable end facilitate the easy movement of large machinery, ride-on mowers, or long timber materials.
- Lasting Construction: Rustic overlap cladding aids water run-off, supported by a conditional 10-year anti-rot guarantee for long-term peace of mind.
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