tabtab
2016-05-20 19:05:53
- #1
Well then, let's bring it back to life.
I’m also interested in the topic.
With our general contractor (GU) we get a T9 block as standard, unfilled. Recently we visited our new neighbors, who received the same block from the same GU, and were surprised how noisy the house was. You could hear the cars in the stairwell from outside. It should be noted that the roof insulation from the inside was not yet fully applied and the block was mortared rather than glued. There were large mortar joints everywhere.
Since then, we have considered offering the T9 with perlite filling. Hence the question here.
However, our GU does not want to install it, allegedly due to bad experience with processing. The filling could crumble out, more effort, etc. So he did offer it, but I guess with a hefty "fear premium." They want €7,750 for our house with just under 200 m² of heated living space, 2 full floors. As I said, that seems extremely high to me.
Are there any assessments / experiences here?
Now we are pondering and considering whether for €8,250 we should instead go for KfW55. Then we would get significantly more out of it, better insulation, etc., and a T8 block instead of the T9, although unfilled and probably carrying the same properties (crumbly, poor sound insulation). And yes, T8 is sufficient, the energy consultant has calculated it. Although the difference between T8 and T9 is probably minimal; whatever you save there you pay for with even worse soundproofing and thinner webs = crumbly.
We live near a street, so we would have liked to do something here. But for the money, it really isn’t worth it. Especially since I don’t know if the promise of minus 3 dB with perlite blocks will really be kept. 3 dB sounds little but is 100% less sound at the same frequency.
How do you see it?
I’m also interested in the topic.
With our general contractor (GU) we get a T9 block as standard, unfilled. Recently we visited our new neighbors, who received the same block from the same GU, and were surprised how noisy the house was. You could hear the cars in the stairwell from outside. It should be noted that the roof insulation from the inside was not yet fully applied and the block was mortared rather than glued. There were large mortar joints everywhere.
Since then, we have considered offering the T9 with perlite filling. Hence the question here.
However, our GU does not want to install it, allegedly due to bad experience with processing. The filling could crumble out, more effort, etc. So he did offer it, but I guess with a hefty "fear premium." They want €7,750 for our house with just under 200 m² of heated living space, 2 full floors. As I said, that seems extremely high to me.
Are there any assessments / experiences here?
Now we are pondering and considering whether for €8,250 we should instead go for KfW55. Then we would get significantly more out of it, better insulation, etc., and a T8 block instead of the T9, although unfilled and probably carrying the same properties (crumbly, poor sound insulation). And yes, T8 is sufficient, the energy consultant has calculated it. Although the difference between T8 and T9 is probably minimal; whatever you save there you pay for with even worse soundproofing and thinner webs = crumbly.
We live near a street, so we would have liked to do something here. But for the money, it really isn’t worth it. Especially since I don’t know if the promise of minus 3 dB with perlite blocks will really be kept. 3 dB sounds little but is 100% less sound at the same frequency.
How do you see it?