The Billy Oh Billy Oh Artists Cabin Summerhouse is a unique design which gives extra space to relax... Roof. The door on this building has been offset to give a more enhanced working space & extra headroom. This design is unique to the market & offers a complete Cabin Summerhouse. Construction. The walls on the building are made from tongue & groove cladding so that the overall construction of the building blends naturally into your garden environment. Features. This summerhouse comes complete with long opening windows that allow a generous amount of light to enter the building & to aid in the construction of the building. Full fixing kit including felt & instructions are included. Treatment. To help during construction & transport to you the building has been pre-treated with a dipped, base coat, timber preservative treatment. To comply with the warranty & finish the building in style, we recommend that a further treatment is carried out following construction, and