12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse
12 x 8 Helios Summerhouse

12 x 8 Helios Summerhouse

This Helios Summerhouse is a great garden building and is perfect for the summer months. Modern and easy to build!

Shiplap Cladding
Interlocking Tongue And Groove Roof And Floor
Dip Treated Timber
Shatterproof Styrene Windows
Supplied With A Lock And Key For Security
10 Year Anti Rot Guarantee

The Mercia 12 x 8 Helios Summerhouse offers a vast and spacious interior, great for larger pieces of furniture and dining sets. This summerhouse is perfect for those looking for somewhere to sit, relax and enjoy the garden views or those looking for somewhere to entertain guests during the summer months. Boasting six large styrene glazed windows and half glazed double doors, the interior is a bright and welcoming.

The walls of this summerhouse are constructed using premium horizontal interlocking tongue and groove boards with a shiplap profile. The shiplap profile includes a protective and aesthetically pleasing lip to create a strong, weatherproof panel. Complete with thick wooden framing to support the cladding internally, this building offers a rigid and long-lasting structure. Heavy-duty tongue and groove boards are used to construct the roof and floor of this summerhouse. Using an interlocking method, the boards lock together to create a premium, strong and hard-wearing finish which is ideal for frequently used buildings and heavier items. Robust roofing felt, fixtures and fittings are all supplied as standard, alongside our detailed instructions and our manufacturer’s recommendations, to ensure a simple and stress free assembly process.

This building is made in the UK, using ethically sourced, FSC certified timber. All of our buildings come with an Anti-rot guarantee, to ensure your garden building looks great and lasts the test of time, this building in particular comes with a conditional 10 year Anti-rot guarantee as well as a 12 month manufacturer’s warranty. Annual re-treatment is required to maintain your building and the Anti-rot guarantee.


At Mercia we like to make the shed buying process as stress-free as possible, that's why we offer a professional and efficient Installation service across a wide range of our garden products, including sheds, summerhouses, greenhouses, playhouses, log cabins and insulated garden rooms. So you can sit back, relax and let our expert fitters take care of everything.

Once you have purchased our Installation service, our helpful customer service team will send you all the necessary information on how to prepare your garden for the installation. Before we arrange the installation we must ensure you have a firm, level base with a minimum of 60 cm space surrounding, for our installers to assemble your garden building upon and ensure they leave you with a building fit for many years of service. Once confirmed we will arrange a date that best suits you.

Installation will take place on the same day as the delivery of your building. Our friendly team will keep in contact and you'll be given a 2-hour delivery slot, meaning there is no need for you to wait in all day. Our expert fitters are fully trained and will work professionally, carefully and quickly to ensure that your new garden building is constructed safely and to the highest standard in your chosen location.

Once completed, our team will make sure to clean up afterwards, leaving you to unwind and enjoy your brand new garden building.

Please Note: Sizes are approximate only. For specific details, please consult our technical department.

Imperial Size (ft)12 x 8
People Req'd To Build2
Anti-Rot GuaranteeYes
Cladding12mm Shiplap Tongue and Groove
Roof Material12mm Tongue and Groove
Floor Material12mm Tongue and Groove
Roof TypeCurved
Number of Doors2
Lock TypeMortice Lock


Width11' 11" / 3.63m
Depth9' 8" / 2.95m
Eaves Height6' 0" / 1.84m
Ridge Height7' 0" / 2.16m
Internal Width11' 3" / 3.43m
Internal Depth7' 5" / 2.27m
Floor Width11' 6" / 3.51m
Floor Depth7' 8" / 2.35m


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