DieJungs
2021-10-26 07:42:26
- #1
Good morning,
in addition to the top floor ceiling, I also have to renew the external insulation. Currently, 5 cm of glass wool is used, with asbestos shingles on top. The shingles are to be removed and then a new external insulation applied right away. Finally, either plaster or a combination of plaster and wooden cladding, depending on the costs. Since it is a house from 1935 and we do not want to install a ventilation system afterwards, the insulation material should be somewhat diffusion-open.
The energy consultant suggested 16 cm of rock wool to achieve a U-value <0.2 and to qualify for funding from KfW/Bafa. Since we do not have too many windows, I would prefer a build-up that is as thin as possible. The thicker the build-up, the more light is lost. What could I use as an alternative to rock wool so that I can manage with a slightly thinner insulation thickness?
Have a nice day
Heiko
in addition to the top floor ceiling, I also have to renew the external insulation. Currently, 5 cm of glass wool is used, with asbestos shingles on top. The shingles are to be removed and then a new external insulation applied right away. Finally, either plaster or a combination of plaster and wooden cladding, depending on the costs. Since it is a house from 1935 and we do not want to install a ventilation system afterwards, the insulation material should be somewhat diffusion-open.
The energy consultant suggested 16 cm of rock wool to achieve a U-value <0.2 and to qualify for funding from KfW/Bafa. Since we do not have too many windows, I would prefer a build-up that is as thin as possible. The thicker the build-up, the more light is lost. What could I use as an alternative to rock wool so that I can manage with a slightly thinner insulation thickness?
Have a nice day
Heiko