Vapor Retarder Installation Dinning Room and Lobby (Dampfbremse anbringen Essbereich und Diele )

Today, I worked the whole day to double the ceiling insulation in our dinning room and lobby. After that, I was then able to finally install the vapor retarder. As suggested by ProHaus, we just need insulation material of 100 for the ceiling, except on the part near our walls (in the whole house) which should be in 240. But since we have extra insulation materials, we then decided to double it.

After installing the vapor retarder, now the dinning room and lobby looks blue!!! Something new in our ground floor. Unfortunately, hubby's vacation is over... therefore we need to wait for the weekend to install the ceiling substructure.