Scanning is essential for knowing what materials are in buildings in order to renovate, reuse, or deconstruct them sustainably.  New and ever improving technologies help engineers understand what materials are in a building so that they can better plan what to do with them.

Romain Géry is the director of Scanways, a company based in Geneva that offers specialized digital surveying for architecture, engineering, and construction. Scanways produces high quality and high precision 3D scans, building information models, and virtual reality tours of buildings.

Episode credits: Interview by Catherine De Wolf and Jennifer Bartmess. Produced and edited by Jennifer Bartmess. Music by Coma Media. © Chair of Circular Engineering for Architecture, ETH Zurich