About: Prof. Yrieix began his work on thermal insulation materials in a collaborative manner at EDF R&D in 1998 with the infrared opacification of traditional porous materials and then the evaluation of “green” insulating materials. In 2000, the theme of super insulation by VIPs, initiated in Munich and Zurich, emerged in France with a modest participation in Annex 39. Prof. Yrieix’s first attendance at IVIS dates back to 2005, the beginning of 20 years devoted to the technical, economic and environmental performance of superinsulation, VIPs followed by aerogels, where the issue of their durability is central. During this period, he led the French community on super insulation and directed a dedicated laboratory as well as numerous thesis on the subject. It is with Annex 65 and its aftermaths that he ended a rich career in multiple and fruitful collaborations.