This revised edition of *Isolation* by M. Matana offers updated guidance on building insulation techniques and materials, part of the 'Concevoir et construire' (Design and Build) series. Aimed at professionals and informed homeowners, the book covers practical methods for improving thermal and acoustic performance in residential and light commercial structures. It reflects French construction standards and best practices as of the year 2000, making it a relevant resource for those engaged in sustainable building or renovation projects in Francophone regions.