Source google image: https://www.ecosources.info/images/chantier/isolation-comble-fibre-bois/3_premiere_couche_isolant_bois_chevron.jpg
Isolation toiture laine de chanvre
Source google image: https://www.ecosources.info/images/chantier/isolation-comble-fibre-bois/3_premiere_couche_isolant_bois_chevron.jpg