Text description provided by the architects: The house is insulated by straw insulation and the structure grid is based on the dimension of a bale of straw. The exterior cladding and the shutters are made of Douglas of Vosges. The interior walls are made of wooden framework and they are covered by oak boards of Vosges. All of these elements were made by Il Était Un Arbre. The exterior triple-gazed and pine joineries were made by Faymont sawmill and installed by Lecomte.