The 5m x 4m Cresswell Insulated Garden Room is for all-year use. Its constructed with 100mm thick double-skinned walls containing Eco-quilt multi-foil insulation. Use it as a garden office, guest space, or outdoor eating area. The key features include:. *Free Home Installation. *Customisable design. *Double glazed windows. *EcoQuilt insulated walls and roof. *Air Tec Insulated floor. *16mm Tongue and groove floor. *Solid Sheet Board Interlocking Tongue and Groove Roof. *10-year anti-rot guarantee. Compare prices from: Mercia in Outdoor Equipment