Your partner for ambitious staircase design No other detail leaves its mark on the interior of a building like the staircase. This is why we offer you the perfect combination of aesthetics and quality. High-grade materials, precise work and high quality design are three pillars of our staircase production. In 1979 Interbau started as a small commercial company for staircases. Soon it was obvious that the company had to expand due to the wishes of our customers. Our highly qualified staff and modern completion technology make us one of the top companies on the global staircase market.