premium range

Detailed Specification

Please note: all measurements are approximate and Mercia Garden Sheds are made from metric measurements.  We would recommend that the base be at least 50mm bigger in each direction

Product Name: 12 x 6 (3.57m x 1.89m) Mercia Premium Shiplap Pent Shed
Front Width: 3.51m (11'6")
Depth: 1.75m (5'9")
Height to Ridge: 2.04m (6'8")
Height to Eaves: 1.84m (6'0")
Walls: 12mm Shiplap tongue and groove
Framing: 27mm x 44mm
Door: Double door
Door Opening Height: 1.69m (5'7")
Door Opening Width: 1.08m (3'6")
Door Lock: Padbolt (padbolt lock not supplied)
Roof Type: 12mm tongue and groove
Roof: Pent
Roofing Felt: Green mineral felt
Floor: 12mm tongue and groove
Floor Joists: 28mm x 28mm (1" x 1")
Floor Joists Direction: Front to back
Window(s): 1 opening window
Window/Door Panel(s) Interchangeable: The double door and window can be reversed on the front width
(the location of the double door and window can be decided at the time of assembly)
Window Glazing Material:  Styrene
Alternative Product(s): N/A
Treatment: Dip-treated
Wooden Shed Base: N/A
Manufacturer's Guarantee: 10 year anti-rot guarantee
Self Assembly: Yes
FSC Certified:   Yes
Free Delivery:   Yes*
Assembly Available: Optional
EAN Number: 5029442006208
Recommended Treatment: View our Protek Range
Country of Origin: Great Britain
Manufacturer: Mercia Garden Products Limited


A place to store not just garden tools but all those garden accessories bought for outdoor living, the 12 x 6  Mercia Premium Shiplap Pent Shed provides ample space for just such essentials, as it has a greater peak roof height than many similar pent roof sheds. Its flexible, modular design means that you can design where you want to locate the windows and doors during construction. This will allow you to build the shed that best suits your garden space, whether it’s to take advantage of direct sunlight or simply to ensure your door is where you need it for easy access.

The one large opening styrene glazed window provides this shed with a light and welcoming interior.  While double doors make accessing your stored items super easy. Premium tongue and groove Shiplap cladding provide this building with a robust structure. That, thanks to the interlocking design of the boards is also weatherproof. Quality mineral roofing felt also offers further protection from the elements. So you can be confident that your possessions are being stored safely. Thick internal sturdy framing completes this building. Creating a storage space you can rely on for years to come. Heavy-duty tongue and groove boards form the floor and roof of this garden shed. Resulting in a building that can easily withstand the pressures associated with daily use.

This pent shed is manufactured here in the UK, using ethically sourced FSC® certified timber.  Hard-wearing tongue and groove boards form the floor and roof of this modern shed. Meaning this building can easily withstand the pressures of everyday general use. Thick internal framing completes this garden shed, providing you a long-lasting structure to enjoy for years to come.

Robust fixtures and fittings are all supplied as standard with this garden shed. Alongside our detailed instructions and manufacturer's recommendations, to ensure a stress-free assembly.

Please note: some images may show the shed decorated with accessories/furnishings that are for display purposes only and they are not included with your purchase. They may also show more windows than are supplied with the size of shed you select. Please refer to the specification table for the number of windows supplied with this 12 x 6 Mercia Pent Shed.

Though this product is dip-treated and comes with a 10-year anti-rot guarantee, this treatment only covers the item for transport purposes. We want you to enjoy your new garden shed for many years to come, and in order to do so, we recommend that you treat your shed as soon as possible after installation with a preservative and waterproofing top coat to ensure it is protected from the elements. With consistent annual treatment, this shed will maintain its high-quality finish and also retain the 10-year anti-rot guarantee. Then your guarantee will be good to go! The Shiplap Pent Shed also includes a 1-year manufacturer’s guarantee as standard.

We’re proud to stock a wide range of Protek Royal Exterior paint in over 60 colours to perfectly customise your Mercia Pent Shed to suit your style. Though we've included some of our most popular colours with this product, you can browse the full range of Protek Royal Exterior Wood Finish Paint here to find the colour that's perfect for you.

About Mercia
Mercia Garden Products pride themselves as a British business with over 140 years’ experience. They offer a variety of products ranging from traditional summerhouses and log cabins to greenhouses and fencing and garden storage solutions. All their products are manufactured in the UK using FSC® certified and ethically sourced materials in their products. Mercia focuses on innovating and improving their products whilst maintaining customer satisfaction, including ensuring safety for both customers and staff.


Key Features

  • FREE UK Mainland Delivery. *
  • Pick your delivery date at the time of order
  • Planed timber to give a smooth finish.
  • 10 Year Anti-Rot Guarantee
  • FSC Certified Timber.
  • Includes all necessary fixtures and fittings, as well as easy-to-follow instructions.


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 12 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.

12 x 6 (3.57m x 1.89m) Mercia Premium Shiplap Pent Shed

Was £1149.99 Now £1,099.99
NEW - Guarantee - 10 year - gold

Product code - 20010220


Description Information

With an adaptable modular design that allows you the flexibility to decide where best to position the double doors and wide opening window to suit your garden, as well as generous eaves and ridge height that offer ample space, the Mercia Premium Shiplap Pent Shed 12 x 6 Shed is a superior garden storage solution. Features include:

  • Flexible modular design that allows you to place the window and double doors in a position most suitable for your garden layout.
  • Easy access wide-opening double doors supplied with a galvanised steel pad bolt for increased security from the onset of assembly.
  • Styrene glazed wide opening window provides ample light and ventilation to the space to create a comfortable working area.

View full specification Delivery

Usually delivered: Use Pick A Day delivery below for your earliest delivery date to your Post Code.

Note: Currently not available for delivery to Offshore Post Codes.

excludes installation option
Choose additional options
Protek Wood Stain and Protector for Mercia Products
Protek Wood Stain and Protector 5 litres - Gun Metal Grey£29.99
Protek Wood Stain and Protector 5 litres - Chestnut£29.99
Protek Wood Stain and Protector 5 litres - Silver Fir£29.99
Protek Wood Stain and Protector 5 litres - Teak£29.99
Protek Wood Stain and Protector 5 litres - Sky Grey Blue£29.99
Protek Royal Exterior Superior Wood Finish for Mercia Products
Protek Royal Exterior Superior Wood Finish 5 litres - Golden Oak£59.99
Protek Royal Exterior Superior Wood Finish 5 litres - Sage Leaf£59.99
Protek Royal Exterior Superior Wood Finish 5 litres - Silver Grey£59.99
Protek Royal Exterior Superior Wood Finish 5 litres - Clear£59.99
Protek Royal Exterior Superior Wood Finish 5 litres - Slate Grey£59.99
Protek Royal Exterior Superior Wood Finish 5 litres - Mendip Mist£59.99

Your choices:

  • 12 x 6 (3.57m x 1.89m) Mercia Premium Shiplap Pent Shed£1,099.99