Architectural jam sessions. Harmonized improvisations from recycled components in Casamatta, Mulini di Gurone, Malnate, Italy

This paper presents the experiences cumulated in three stages of design- build experimentations through the work of graduate theses on a building that is being redesigned and retrofitted since more than a decade by volunteer work, utilizing recycled materials and re-used components with criteria of environmental sustainability and ultra-low economic cost. The lessons learned have been valuable under several viewpoints. The paper described, in particular, the works that have been built in the first two editions of the workshops, seeking the traces of an evolution within the experience, and attempting some considerations about the challenges and opportunities stemming from component reuse in participated building rehabilitation.