For the members of the Organizing Committee it is a great honor and an indeed a privilege, not to mention an exciting challenge, to have received the responsibility for organizing the 15th edition of the internationl conferece Durability of Building Materials and Components (DBMC 2020). Over more than 40 years, the DBMC triennial conferences have been a recognized worlwide event and a meeting point for high quality research and expert professionals in the area of building technologies, civil engineering and architecture focused on durability. UPC-BarcelonaTECH feels proud to host the 2020 edition and encourages all international members of the academic and professional community to take part in such that this event provide a highly fruitful forum for the exchange and dissemination of your work and research. Please, browse the online venue, participate in the plenary and contributed sessions, attend the poster session and the cooperation projects contest, vote for the students awards and network with your colleagues. In three words: ENJOY THE CONFERENCE!! Be welcome to DBMC 2020 ONLINE VENUE!! Carles Serrat (Chair), Joan Ramon Casas and Vicente Gibert Organizing Committee of the DBMC 2020 International Conference