A fully insulated guesthouse.
Double-walled by means of a prefab concrete shell that is finished with pine tongue-and-groove on the outside and 18mm meranti plywood on the inside.
The front of the guesthouse has 2 sets of garden doors and a window with HR++ insulating glass.
The roof has EPDM roofing and roof insulation.
There are also 2 skylights installed here.