jonny666111
2012-05-02 13:22:41
- #1
In this case, I guess there is no need to calculate. U= 0.17...0.18 will certainly be positive for pellets.
Is that meant ironically?
I have run these calculations again using the U-value calculator.
Due to the dew point, only 3cm of insulation under the rafters is possible.
032 WLG without insulation under the rafters -> U-value 0.21 -> €1178
035 WLG without insulation under the rafters -> U-value 0.22 -> €786
035 WLG with 3 cm insulation under the rafters -> U-value 0.19 -> €1300
So, a professional could give me the decisive tip for one of the mentioned variants. Right?
I cannot quite interpret the last answer.
Regards, Jonny