Make the most of an unused corner of your garden with the Mercia 12 x 8 Premium Corner Summerhouse with Side Shed. Combining a spacious summerhouse with a practical integrated storage area, this versatile garden building offers the perfect balance of relaxation space and secure outdoor storage.

Designed to fit neatly into a corner position, the summerhouse maximises available garden space while creating a bright and inviting retreat. Full-length glazed windows and fully glazed double doors flood the interior with natural light and provide attractive panoramic views of your garden. Whether you're creating a hobby room, garden office, reading space or entertaining area, the generous interior offers a comfortable and welcoming environment.

The integrated side shed provides valuable additional storage space for garden tools, outdoor furniture, bicycles and seasonal equipment, helping to keep your garden organised while keeping essentials close at hand.

Manufactured in the UK using sustainably sourced timber, the building features premium 12mm shiplap tongue and groove cladding that offers a smooth finish, excellent weather resistance and long-lasting durability. The roof and floor are constructed from interlocking tongue and groove boards for a robust and hard-wearing structure capable of supporting everyday use.

Styrene glazing is fitted throughout, providing a safer, shatter-resistant alternative to traditional glass. High-quality mineral felt is supplied to protect the roof from the elements, while a lock and key system helps keep both the summerhouse and storage area secure.

Key Features

• Clever Corner Design Maximises Garden Space
• Spacious Summerhouse And Separate Side Storage Shed
• Premium 12mm Shiplap Tongue & Groove Cladding
• Fully Glazed Double Doors
• Large Full-Length Styrene Glazed Windows
• Bright Interior With Panoramic Garden Views
• Tongue & Groove Roof And Floor Construction
• Secure Lock And Key Included
• High Quality Mineral Felt Roofing Included
• Sustainably Sourced Timber
• Manufactured In The UK
• 10 Year Anti-Rot Guarantee*

Technical Specification

• Cladding Type: Shiplap Tongue & Groove
• Cladding Thickness: 12mm
• Framing Thickness: 28mm x 28mm
• Floor Material: Tongue & Groove Matchboard
• Roof Material: Tongue & Groove Matchboard
• Glazing Material: Styrene
• Treatment Type: Dip Treated
• Anti-Rot Guarantee: 10 Years
• People Required For Assembly: 2

Dimensions

Summerhouse

• Overall Width: 3685mm (12ft 1in)
• Overall Depth: 2540mm (8ft 4in)
• Base Width: 3575mm (11ft 9in)
• Base Depth: 2430mm (8ft)
• Internal Width: 2374mm (7ft 9in)
• Internal Depth: 2374mm (7ft 9in)

Side Shed

• Internal Width: 1110mm (3ft 8in)
• Internal Depth: 2370mm (7ft 9in)

Height

• Eaves Height: 1998mm (6ft 7in)
• Internal Eaves Height: 1855mm (6ft 1in)
• Ridge Height: 2118mm (6ft 11in)
• Internal Ridge Height: 1994mm (6ft 6in)

Door Openings

Summerhouse Double Doors

• Door Aperture Width: 1181mm (3ft 10in)
• Door Aperture Height: 1712mm (5ft 7in)

Side Shed Door

• Door Aperture Width: 963mm (3ft 2in)
• Door Aperture Height: 1625mm (5ft 4in)

Base Requirements

This building must be assembled on a firm, level base such as concrete, paving slabs or a suitably constructed timber base. A solid foundation is essential for correct assembly, long-term structural stability and maintaining the manufacturer's guarantee.

Assembly Information

• Supplied flat-packed for self-assembly
• Full instructions and fittings included
• Two people recommended for assembly
• Lock and key supplied as standard
• Mineral roofing felt included
• Annual treatment with a suitable timber preservative and waterproof top coat is required to maintain the anti-rot guarantee
  
  Corner Summerhouse Assembly Instructions PDF
  Corner Summerhouse Side Shed Instructions PDF

Delivery Information

Delivery is typically 1–3 weeks to mainland UK addresses.

Once your order has been processed, Mercia will contact you to arrange a suitable delivery date. Tracking information and delivery updates will be provided where available.

Deliveries are made on weekdays and are kerbside only. The building is delivered flat-packed, and someone must be available to accept and inspect the delivery. Please ensure suitable access is available for the delivery vehicle.

The 10-year anti-rot guarantee is subject to the building being treated after installation and maintained annually with a suitable timber preservative and waterproof top coat.

Mercia Delivery Process pdf

What to Expect From A Mercia Delivery

Mercia Installation Service