PET-MAT is a research group at FA CTU in Prague, which is investigating application of recycled PET in architecture. The group primarily develops a brick produced by an industrial method of blow moulding. PET-MAT was born on 1st of July 2014 in Experimental studio, which has a tradition in implementing garbage as a building material since 2010. Since 2014 this research is supported by two main partners: KMV a. s. in Prague and CTU Prague.