ᐅ KfW 40 or better in solid construction without additional insulation possible?
Created on: 18 Nov 2019 08:44
S
Specki
Hello,
I was initially set on a timber frame construction for my future house. However, I am now reconsidering solid construction because it does have its advantages. Ideally, I would prefer this without additional external insulation, as that would be redundant and insulation typically does not last as long as the masonry itself. Poroton seems the most appealing option to me at first glance.
But is that even feasible? Are there bricks (or other solid building blocks) that on their own meet the KfW 40 standard, or possibly perform even better?
Does anyone have experience with this? Has anyone actually built something like this?
I’m open to discussion if you believe additional insulation makes sense. However, no “Styrofoam” will be used on the exterior walls; if anything, it will be an alternative material.
The comments I would rather avoid are those suggesting a lower energy standard would be sufficient. I will not build anything below KfW 40.
Thanks in advance for your input.
Best regards,
Specki
I was initially set on a timber frame construction for my future house. However, I am now reconsidering solid construction because it does have its advantages. Ideally, I would prefer this without additional external insulation, as that would be redundant and insulation typically does not last as long as the masonry itself. Poroton seems the most appealing option to me at first glance.
But is that even feasible? Are there bricks (or other solid building blocks) that on their own meet the KfW 40 standard, or possibly perform even better?
Does anyone have experience with this? Has anyone actually built something like this?
I’m open to discussion if you believe additional insulation makes sense. However, no “Styrofoam” will be used on the exterior walls; if anything, it will be an alternative material.
The comments I would rather avoid are those suggesting a lower energy standard would be sufficient. I will not build anything below KfW 40.
Thanks in advance for your input.
Best regards,
Specki
N
nix zu schwör18 Nov 2019 18:12The photovoltaic system does not change the kWh,...
Bookstar schrieb:
Then I would check the electricity meter—there’s definitely something wrong, good for you!apokolok schrieb:
There’s probably a photovoltaic system involved...Yep, but zaba also has one, I think.
Hello
Where is the problem with the desired KfW standard?
When it comes to external blinds, ventilation space, home automation/KNX, walk-in closets, children’s bathrooms, and similar features, there is always skepticism about whether such measures make sense on this scale. And not a single one of these is cost-effective; they are all things that will lead to further maintenance and upkeep costs in the future.
Those who insulated their roof with 140mm (5.5 inches) of glass wool more than 30 years ago and sealed the joints with aluminum tape were also told back then that it was nonsense and would never pay off. Double glazing was also perfectly acceptable not too long ago. Who builds that into their new build home today?
Why not build one step ahead of the current standard?
I am still happy with our “KfW 40 insulation” after four years and will of course also build the new house to KfW 40 standard, simply because I enjoy it and want it that way, even if it is only for rental purposes.
Olli
Where is the problem with the desired KfW standard?
When it comes to external blinds, ventilation space, home automation/KNX, walk-in closets, children’s bathrooms, and similar features, there is always skepticism about whether such measures make sense on this scale. And not a single one of these is cost-effective; they are all things that will lead to further maintenance and upkeep costs in the future.
Those who insulated their roof with 140mm (5.5 inches) of glass wool more than 30 years ago and sealed the joints with aluminum tape were also told back then that it was nonsense and would never pay off. Double glazing was also perfectly acceptable not too long ago. Who builds that into their new build home today?
Why not build one step ahead of the current standard?
I am still happy with our “KfW 40 insulation” after four years and will of course also build the new house to KfW 40 standard, simply because I enjoy it and want it that way, even if it is only for rental purposes.
Olli
nichts zu schwör schrieb:
The photovoltaic system does not change the kWh,...Yes, that depends on the interpretation, but basically you are right. I didn’t have the exact number on hand, but it is rather around 1200. That’s why, in the end, the “fun” as well.nichts zu schwör schrieb:
The photovoltaic system does not change the kWh,...If the 500 kWh refer to the reading on the consumption meter, then probably yes
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