xerano88
2023-12-07 08:31:33
- #1
Good day everyone,
I am planning to insulate the attic; currently, there are 200mm insulation mats including a vapor barrier on the concrete floor.
It is a hip roof with 240mm rafters and an underlay membrane, which has openings for pipe penetrations, for example (photo attached).
Now my idea is to install WLG032 compressed fleece including a vapor control layer and then secure it with formwork boards so that I can attach plasterboard panels.
The attic has no windows and none are to be installed. The attic is only intended for storing electrical devices and occasionally serving as an "emergency space" for guests.
Access to the attic is via a pull-down ladder and has no additional ventilation.
Now the actual question:
Do I need to provide ventilation for the created space to prevent mold growth, or is the vapor control layer sufficient?
I am planning to insulate the attic; currently, there are 200mm insulation mats including a vapor barrier on the concrete floor.
It is a hip roof with 240mm rafters and an underlay membrane, which has openings for pipe penetrations, for example (photo attached).
Now my idea is to install WLG032 compressed fleece including a vapor control layer and then secure it with formwork boards so that I can attach plasterboard panels.
The attic has no windows and none are to be installed. The attic is only intended for storing electrical devices and occasionally serving as an "emergency space" for guests.
Access to the attic is via a pull-down ladder and has no additional ventilation.
Now the actual question:
Do I need to provide ventilation for the created space to prevent mold growth, or is the vapor control layer sufficient?