Bieber0815
2015-03-16 11:19:04
- #1
An uninsulated wall is generally also airtight, i.e., whether 6 cm or 30 cm insulation makes no difference in terms of air permeability.There is a 6cm insulation. By today's standards much too little, but I don't want an airtight old building since I can't retrofit a ventilation system.