12 x 8 (3.68m x 2.54m) Mercia Corner Summerhouse with Side Shed

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12x8  Mercia Corner Summerhouse with Side Shed - in situ - angle view - doors open
  • 12x8  Mercia Corner Summerhouse with Side Shed - in situ - angle view - doors open
  • 12x8  Mercia Corner Summerhouse with Side Shed - in situ - angle view - doors open
  • 12x8  Mercia Corner Summerhouse with Side Shed - in situ - angle view - doors closed
  • 12x8  Mercia Corner Summerhouse with Side Shed - white background - angle view - doors open
  • 12x8  Mercia Corner Summerhouse with Side Shed - white background - side view
  • 12x8  Mercia Corner Summerhouse with Side Shed - white background - angle view
  • 12x8  Mercia Corner Summerhouse with Side Shed - white background - shed
  • 12x8  Mercia Corner Summerhouse with Side Shed - internal view
  • 12x8  Mercia Corner Summerhouse with Side Shed - in situ - top view
  • 12x8  Mercia Corner Summerhouse with Side Shed - dimensions
  • 12x8  Mercia Corner Summerhouse with Side Shed - footprint

12 x 8 (3.68m x 2.54m) Mercia Corner Summerhouse with Side Shed

NEW - Guarantee - 10 year - gold

Product Code - 20040185

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

excludes installation option

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  • 12 x 8 (3.68m x 2.54m) Mercia Corner Summerhouse with Side Shed£1,199.99


            The Premium Corner 12 x 8 Summerhouse with Side Storage (also available in 11 x 7 and 13 x 9) is a relaxing space in your garden and includes handy garden storage. The fully glazed double doors and two fixed, full-length windows make the wooden summerhouse light and airy. All windows are made with shatterproof styrene glazing so the whole family can enjoy this summerhouse with a shed. You can use the flexible interior space in several ways. It can be a space for crafts and hobbies, or you can add seating for entertaining guests. Make it the perfect spot to relax with a cuppa. The side storage is really useful and the great news is that this side storage can be located on either the left-hand side or the right-hand side, you can make the decision at the time of assembly.  Store furniture and other items in there and switch things around in the summerhouse depending on the season. It is also the perfect secure place for your garden equipment and tools.

            The pent-roof summerhouse with double doors allows you to open up the space on those warm summer evenings. The roof design helps the rainwater runoff, and the efficient design will fit neatly in the corner of your garden. The side shed has double doors, so you can easily move large items in and out. The doors on the summerhouse and shed can be locked to keep everything safe and secure. Brushed chrome handles and hinges add a stylish look to this modern summerhouse. This summerhouse's beautiful design and additional storage space will give you everything you need in one cleverly designed garden building.


            Guarantee - 10-year anti-rot

            Walls - 12mm tongue and groove interlocking cladding for maximum strength

            Floor - high-quality 12mm planed tongue and groove

            Roof - pent roof constructed with 12mm tongue and groove and roofing felt provided

            Frame - 54mm x 27mm

            Floor Bearers - 27mm x 27mm

            Windows - two styrene glazed windows

            Summerhouse doors - double doors

            Side shed doors - double doors (this can be located on either the left-hand side or the right-hand side)

            Treatment - water-based base coat (application of preservative and waterproof coat required)

            Make the Most of Your Summerhouse with Storage

            With so much space, french doors, and two large windows, the 12 x 8 Premium summerhouse's possibilities are endless. It’s a great place to spend time with family and friends or use it as a personal escape for some peace and quiet. Furnish with a desk or add a worktop for hobbies and crafts. You can swap around the furniture from the shed to the summerhouse and back again to use it differently. However you choose to use this high-quality summerhouse, you will have your own haven just steps from your home.

            About Your Order

            The Mercia Premium Summerhouse with Side Shed is made in the UK with FSC® certified timber. You get a top-quality summerhouse with a low carbon footprint made from ethically sourced materials. The clean and straightforward design makes it easy to assemble, and all the fixtures and fittings required are included as part of your order. The summerhouse has a 10-year anti-rot guarantee and a 12-month manufacturer's warranty to enjoy it for many seasons.

            Please note: Images may show accessories and furnishings; these are for display purposes only and are not included with your purchase.

            Summerhouse Aftercare

            The summerhouse with a side shed has a base coat on both sides; this is a water-based golden brown product for protection during transit. To ensure you enjoy your summerhouse for many seasons, you must apply a preservative and waterproofing topcoat immediately after installation. These treatments, followed by yearly treatment of the summerhouse, will maintain the high-quality finish and retain the 10-year anti-rot guarantee. A 1-year manufacturer's warranty is included as standard.

            To protect the summerhouse, many manufacturers recommend Protek wood treatment. Browse our Protek Royal Exterior Wood Finish Paint range to find the best wooden summer house colour to suit your style.

            About Mercia

            Mercia is one of the best UK garden building manufacturers. They have over 140 years of experience, so you get a summerhouse of the highest quality when choosing Mercia. Mercia combines the latest manufacturing techniques with the best hardwearing materials to produce British-made sheds and summerhouses built to the highest standards.

            Every product Mercia produces is made with safety and exceeding your expectations in mind. You will immediately see why this is one of the best summerhouses and shed manufacturers when you receive your order. All products are made with ethically sourced materials, FSC® certified timber, and a 10-year anti-rot guarantee.


            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.


            Please note: all imperial measurements are approximate, and the Mercia Summerhouses are made from metric measurements. We would recommend that the base is at least 50mm bigger in each direction.

            Product Name:
            12 x 8 (3.68m x 2.54m) Mercia Corner Summerhouse with Side Shed
            Footprint Depth:
            2.43m (7'12)
            Footprint Width:
            3.57m (11'9")
            Ridge Height:
            2.12m (6'11")
            Eaves Height:
            1.99m (6'6")
            Tongue and Groove
            Cladding Thickness:
            Treatment Type:
            Golden Brown Base Coat Dip Treatment
            Recommended Treatment:
            Protek Range (please click here)
            Manufacturer's Guarantee:
            10 Year Anti-Rot Guarantee
            Framing Size:
            2" x 1" (54mm x 27mm)?
            Roof Type:
            Roof Material:
            Tongue and Groove
            Roof Thickness:
            Roofing Felt:
            Green mineral
            Floor Material:
            Tongue and Groove
            Floor Thickness:
            Floor Joists:
            28mm x 28mm (1" x 1")
            Floor Joist Direction:
            Front to Back
            Door Type:
            Double doors
            Door Height:
            1.63m (5'4")
            Door Width:
            1.21m (4')
            Door Lock System:
            Press lock and key (summerhouse) Sliding padbolt for shed (padlock not supplied)
            Number of Window(s):
            2 x Fixed Windows
            Window Material:
            Window/Door Panel(s) Interchangeable:
            The side storage can be located on either the RHS or LHS
            Optional Assembly:
            FSC Certified:
            Free Delivery*:
            Optional Wooden Base:
            Manufacturer's Product Code:
            EAN Number:
            Mercia Garden Products Ltd
            Country of Origin:
            United Kingdom


            This 12 x 8 Premium Corner Summerhouse with Side Storage, (note that the side shed can be located on either the left-hand side or the right-hand side) gives you the best of both worlds. Relax in the bright and airy space inside the corner summerhouse and hide away garden essentials in the side shed. Top features include:

            • Fully glazed double doors
            • Two full-length fixed styrene glazed window
            • Convenient side shed for storage
            • Corner design
            • Shiplap 12mm tongue and groove cladding
            • Brushed chrome handles and hinges
            • Manufactured in the UK from FSC-certified timber

            Key Features

            • Free UK mainland delivery with 'pick a date' option
            • Dip-treated timber used throughout
            • 10-year anti-rot guarantee, assuming you follow the basic care instructions 
            • 54mm x 28mm internal timber framing
            • Fit into a neglected corner of your garden due to clever corner design
            • Galvanised steel padbolt attached to storage shed doors
            • Main summerhouse space is lockable by key 
            • 12mm shiplap cladding using tongue and groove construction
            • Mineral roofing felt included
            • Shatterproof styrene glazing used for summerhouse double doors and two full-length windows
            • Integrated side storage can be fitted onto either side, to suit your unique space