peripheral materials (in lowercase and italics) is a collective dedicated to creating architecture understood as a device for socio-community participation and architectural activism that operates in the city of Rosario (Argentina) "Rosario (Argentina)").[1]​.

It was founded by Marcelo Barrale, Ana Valderrama and a group of teachers from the Faculty of Architecture, Planning and Design of Rosario with the objective that the students of the faculty work on architectural works with specific demands.[2]​.

peripheral materials has a long history of work monitoring the evolution of the territory of the Rosario Metropolitan Area. Its objective is to promote emerging Latin American architectures, actively contribute to the practice of architecture at the service of the popular sectors most affected by socioeconomic inequalities and territories threatened by ecologically unsustainable practices. [3]​.

In 2014, the same group promoted a program called ARQUIBARRIO,[4]​ declared of Municipal Interest by the Municipal Council of Rosario,[5]​ aimed at expanding the socio-territorial linkage capacity of the university, articulating a bank of volunteers together with the state calls for projects for this purpose, currently having 200 student volunteers from the Faculty of Architecture, Planning and Design (FAPyD) working on different projects.

Since 2004 peripheral materials has built around 20 community facilities, community gardens and public spaces; technical advice has been provided; and developed a large number of interdisciplinary university volunteering, university extension, socio-community linkage and technological linkage projects. In these different co-production experiences between the educational community, professionals and social actors of the territory, it is evident that architecture is not only a quality technical tool, but a situated action, an instrument that promotes coexistence and social cohesion, a platform for empowering communities and reconfiguring neighborhood institutions. Likewise, the self-management capacity of these architectures has proven to overcome the times and effects of urban planning bureaucracy and official methodologies that frequently fail to reverse the processes of exclusion of the popular sectors.