Source google image: https://www.ursa.fr/wp-content/uploads/2016/07/www.ursa.fr-combles-perdus-ursa-terra-mrk-38_schema_qhd.jpg
Isolation comble 38
Source google image: https://www.ursa.fr/wp-content/uploads/2016/07/www.ursa.fr-combles-perdus-ursa-terra-mrk-38_schema_qhd.jpg