House in Buenos Aires

We take this job as a difficult task to add to an existing house that was unfolding all at ground floor, an area not very important in floor care and proportions while making a transformation of the image.
As a first step, after adding the program agreed with the client, we decided to create an entire band white envelope that will unify the existing and the new, the band leaves in one corner, a gap that allows us to develop vertical enlargement while part of this gap we use as patio access.
It was decided that the implementation of vertical expansion, a material should be completely opposite to the white perimeter band. 
150 m² were used lapacho tables 3 "x 1" thick placed vertically on curupay rafters of 3 "x1"  The rest of the construction was carried out of ceramic tile bearing walls and foundations of shoes runs.