Mecanotubo is one of the façade industries that invested heavily in the late 1990s in Catalonia to provide a unitary response to the rainscreen façade.
They opted to adapt stick curtain wall technology to this two-layer façade. As in the Carburos Metalicos façade, the resulting inner sheet provides enough water tightness to consider a drainage cavity, and consequently an outer layer, unnecessary. Here the outer layer acts only as a covering.