ᐅ Bricks T9/T10/T11/T12? Thermal Insulation vs. Soundproofing
Created on: 16 Apr 2015 12:45
G
gosia_86
Hello everyone,
Our single-family house construction is starting in September.
We have already chosen a structural brick with a thickness of 36.5 cm (14.4 inches).
Now we need to decide which specific type of brick to use. The main question is about thermal insulation versus soundproofing. Of course, good insulation is important, but I’m concerned that the house might become very echoey with a T9 brick.
The second question is whether anyone has any calculations or data on how much heating cost can be saved with a better brick, or how much more you pay with a lower-quality brick?
I would be very grateful for any answers!
Thank you very much.
Margarete
Our single-family house construction is starting in September.
We have already chosen a structural brick with a thickness of 36.5 cm (14.4 inches).
Now we need to decide which specific type of brick to use. The main question is about thermal insulation versus soundproofing. Of course, good insulation is important, but I’m concerned that the house might become very echoey with a T9 brick.
The second question is whether anyone has any calculations or data on how much heating cost can be saved with a better brick, or how much more you pay with a lower-quality brick?
I would be very grateful for any answers!
Thank you very much.
Margarete
Lebensprojekt schrieb:
We’re constantly recalculating... Since the KFW70 standard will no longer be available next year, it will be difficult for us because we don’t want an air-to-water heat pump.
Best regardsWhat does this mean now? Will it no longer be possible to build with a gas heating system next year because it won’t meet the required regulation?
Kind regards,
Sabine
@BeHaElJa: The manufacturer does not specify the sound insulation. Therefore, I can only make assumptions based on the bulk density of the two bricks – but that doesn’t help me because I need absolute values to be able to compare them. If in doubt, I’ll have to call.
@Curly: No, that’s not entirely correct. You can still currently build with a gas heating system and meet the KFW70 standard.
This is relatively easy, even though you often read otherwise online. However, compared to last year, it involves significantly higher costs unless you have already chosen a central ventilation system.
What you need is the combination of a gas condensing boiler + solar + central ventilation system. If your masonry and insulation are not outdated by about 5 years, you can easily achieve it with this setup.
Tip: search for Stiebel Eltron Energy Saving Ordinance system advisor – there you can easily click together the possible combinations and see whether you would meet the energy saving ordinance or not.
@Curly: No, that’s not entirely correct. You can still currently build with a gas heating system and meet the KFW70 standard.
This is relatively easy, even though you often read otherwise online. However, compared to last year, it involves significantly higher costs unless you have already chosen a central ventilation system.
What you need is the combination of a gas condensing boiler + solar + central ventilation system. If your masonry and insulation are not outdated by about 5 years, you can easily achieve it with this setup.
Tip: search for Stiebel Eltron Energy Saving Ordinance system advisor – there you can easily click together the possible combinations and see whether you would meet the energy saving ordinance or not.
Hello,
Yes, it is still possible. However, since gas heating is now being intentionally calculated less favorably and air-to-water heat pumps are being calculated more favorably, you will probably need a larger solar thermal system if you choose gas heating. This can significantly worsen the economic assessment of gas heating.
Best regards,
Andreas
Curly schrieb:
what does this mean now? Is it no longer possible to build with a gas heating system next year because it no longer meets the required regulation?
Regards,
Sabine
Yes, it is still possible. However, since gas heating is now being intentionally calculated less favorably and air-to-water heat pumps are being calculated more favorably, you will probably need a larger solar thermal system if you choose gas heating. This can significantly worsen the economic assessment of gas heating.
Best regards,
Andreas
Nothing is artificially calculated here... the government's goal is to become more independent from fossil fuels – partly for political reasons and partly for environmental considerations. Since the energy mix has changed, the factor has now been adjusted (the electricity has become “cleaner”). For the consumer, this is of course nonsense, as heat pumps are indeed favored, even though they may not necessarily be the most economical option for them.
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