Source google image: https://architecteo.com/architecteo-wpcontent/uploads/2017/03/isolation-comble-perdu-sur-plafond-charpente-industrielle-fermette-w.png
Isolation toiture fermette
Source google image: https://architecteo.com/architecteo-wpcontent/uploads/2017/03/isolation-comble-perdu-sur-plafond-charpente-industrielle-fermette-w.png