At first glance, Rundzwei Architekten's corkscrew looks like a great piece of cork origami. This impression is created by the extraordinary roof, which forms a gable on all sides of the building.
In reality, only one floor was allowed on the property. Due to the skilful division of the floors into levels and the lowering of the half-floor of the ground floor, the architects of Rundzwei have a floor area of 320 m2 created. The outer shell consists of concrete stamped below ground level and continues above with a wooden construction.
Architects attach particular importance to the regional use of materials in their designs. Therefore, the choice fell on a stamped concrete base. These are laminated and then compacted by hand, creating a unique surface texture.
The living and sleeping areas are located on the lowest floor. The bedroom has direct access to the outdoor pool. This is also lined with stamped concrete, which also protects against unwanted looks.
The rooms above the base are smaller and can be reached via the central staircase. The house can accommodate three people but can be divided into flexible living models in the future in smaller studios. Another entrance is already planned by the architects.
The client wanted a soundproofing facade, to which the architects responded by using cork panels. These are made from cork granules – a byproduct of wine production. The granules are formed into plates under the action of heat and high pressure, with resins emerging from the cork that connect the granules together. The panels are water repellent, absorbent and naturally resistant to mold. Cork also has good thermal insulation properties, so that it can be removed with additional insulation and that the plates are used as monolithic facade material.
Thanks to solar panels on the roof and a laminated storage system, the heat supplied to the house is almost self-sufficient. In addition, it was almost completely possible to dispense with chemical building blocks and adhesives.