The fifth volume in this series is all about the roof. Eight questions are posed to fifteen architectural offices from around the world, beginning with “What is the favourite roof you’ve designed and why?” From there the mini-interviews go on to tackle a range of considerations involving the basic architectural element of the roof from the perspectives of design, region, renovation, culture, and more. Featured architects include Stefano Corbo Studio, Moussafir Architectes, OPARCH, Katsuhiro Miyamoto & Associates, Miha Volgemut, NL Architects, LGSMA_, object-e architecture, and more. A case study portfolio of roofs, old and new, rounds out the volume.