After learning the craft from prestigious stonemasons, Gaëtan moved to Spain in the year 2000. He worked in different places in Barcelona (with the company Natursystem in the works for the Palau de la Generalitat, with F-X.Solé in the works for the Chapel of Santa… Águeda; in the Workshop of the Sagrada Familia), and then he established himself as a freelance mason in his own workshop in a small village called Corça (Girona). 

He carries out stone works both in rehabilitation projects for heritage and in new constructions, keeping the traditional rules and shapes of the craft. He is also very interested in the dissemination of information regarding the craft in all its fields: geology, geometry, history of architecture, etc. 

Fairs and pedagogical workshops for students and companies give him the opportunity to disseminate this craft: stereotomy through didactic models, with references to old treatises, and elaborating the set of necessary templates. Among these models, a spiral staircase and a hemispherical vault stand out.

During the summer of 2007 he took part in the construction of the Castle of Guedelon in France which started being built in the year 1997 exclusively with medieval techniques. 

He has taken part, along with a group of volunteers, in the rehabilitation of the former lime furnace of Fonteta, including the construction of a barrel vault made of dry stone. It is planned to go back to manufacturing lime in the old style shortly.