Source google image: https://www.batirama.com/images/elisabeth/460/ISOLATION%20TOITURE%20poggi/05-isolation-toiture-gutex-objekt-09-03.jpg
Isolation combles 30 cm
Source google image: https://www.batirama.com/images/elisabeth/460/ISOLATION%20TOITURE%20poggi/05-isolation-toiture-gutex-objekt-09-03.jpg