20ft (6.10m) Wide

An 20ft wide summerhouse has the door on the 20ft (6.10m) side. Large gardens benefit from a larger wooden summerhouse and elbec offer designs to suit every type of garden, from the modern to the traditional.

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Looking for a practical and cost effective way to expand on the usable living space in your home without moving house or building a traditional extension? Then the 20 x 10 Mercia Insulated Garden Room could be the perfect solution. A recreation room, a home office, a home gym or even a guest or spare bedroom, you can take advantage of this spacious garden building all year round. The key features include:

  • 72mm thick, double-clad walls fitted with innovative and effective “EcoQuilt” insulation
  • Long-lasting EPDM rubber roof and 14mm double glazed windows provide excellent protection from the elements
  • Installation is included free of charge as part of the price of your Garden Room
ONLY£11,999.99  

Free Delivery*
35 Working Days.

The largest size available, the 20 x 14 Mercia Insulated Garden Room will add so much extra usable space to your home that you’ll have a hard time deciding what to do with it! A recreation room, a home office, a home gym or even a guest or spare bedroom, you can take advantage of this spacious garden building all year round. The key features include:

  • 72mm thick, double-clad walls fitted with innovative and effective “EcoQuilt” insulation
  • Long-lasting EPDM rubber roof and 14mm double glazed windows provide excellent protection from the elements
  • Installation is included free of charge as part of the price of your Garden Room
ONLY£12,999.99  

Free Delivery*
35 Working Days.


The 6m x 3m Mercia Cresswell Insulated Garden Room features 100mm thick double-skinned walls containing Eco-quilt multi-foil insulation. It is perfect for all-year use as a garden office, guest space, or garden gym. The key features include:

  • Free Home Installation

  • 14mm Double glazed with 2 top opening windows and 2 fixed windows

  • EcoQuilt insulated walls and roof

  • Air Tec Insulated floor

  • Customisable design

  • Solid Sheet Board & Interlocking Tongue and Groove Roof

  • 16mm Tongue and groove floor

  • 10-year anti-rot guarantee

ONLY£14,599.99  

Free Delivery*
35 Working Days.

The 6m x 4m Cresswell Insulated Garden Room is perfect for all-year use. It is made with 100mm thick double-skinned walls containing Eco-quilt multi-foil insulation. You can use it as a garden office, guest space, or covered eating area. The key features include:

  • Free Home Installation
  • Customisable design
  • Air Tec Insulated floor
  • EcoQuilt insulated walls and roof
  • 14mm Double glazed with 2 top opening windows and 2 fixed windows
  • 16mm Tongue and groove floor
  • Solid Sheet Board & Interlocking Tongue and Groove Roof
  • 10-year anti-rot guarantee
ONLY£16,399.99  

Free Delivery*
35 Working Days.