I was wondering how to create an airtight cable entry system in concrete wall.
To allow for future expansion, let's say running 4 cables now but 20 in future.
The entry system should not reduce the airtightness of the house or the thermal property of the house.
To allow for future expansion, let's say running 4 cables now but 20 in future.
The entry system should not reduce the airtightness of the house or the thermal property of the house.