Feast lost on the floor

[dodo]

Hello,

in our house we have a bedroom with an attic on both sides if it is around 2.

Behind these partitions there is a space of 1.20 up to the rampant, the insulation of which is done at the level of the bulkhead on the rampant side and on the floor.

I hesitate to isolate directly in the crawling and broke the partition because I find that it is room lost for nothing.


I was wondering if having such a right foot had any benefits in terms of insulation.