Hello experts,
I’m new here and really excited to have found this site. We plan to build next year and are still in the planning phase. The following points are very important to me for the build.
- Solid construction with Poroton (36.5 cm (14.4 inches) exterior wall)
- Without ETICS (external thermal insulation composite system)
- KfW 70 standard
- Air-to-water heat pump
- Underfloor heating
- Triple-glazed windows
I want to build with Poroton, but I already have some doubts. I’ve read a lot about filled Poroton bricks like T7, T8, T9, and Unipor Coriso WS08. My question is whether I could also use an unfilled Poroton brick, such as Unipor WS09 or T9 plan bricks. I contacted Wienerberger to ask which bricks would be suitable. They said that the filled bricks are good, but if unfilled and without external insulation, then the T9 plan bricks (36.5 cm (14.4 inches)) would be recommended.
Is this suitable for a KfW 70 house, and does anyone here have experience with this? Alternatively, I would consider using the filled bricks, but I’m not sure about the practical experience with those, especially combined with perlite or mineral wool.
Thank you very much for your answers.
Regards,
jayden1977
I’m new here and really excited to have found this site. We plan to build next year and are still in the planning phase. The following points are very important to me for the build.
- Solid construction with Poroton (36.5 cm (14.4 inches) exterior wall)
- Without ETICS (external thermal insulation composite system)
- KfW 70 standard
- Air-to-water heat pump
- Underfloor heating
- Triple-glazed windows
I want to build with Poroton, but I already have some doubts. I’ve read a lot about filled Poroton bricks like T7, T8, T9, and Unipor Coriso WS08. My question is whether I could also use an unfilled Poroton brick, such as Unipor WS09 or T9 plan bricks. I contacted Wienerberger to ask which bricks would be suitable. They said that the filled bricks are good, but if unfilled and without external insulation, then the T9 plan bricks (36.5 cm (14.4 inches)) would be recommended.
Is this suitable for a KfW 70 house, and does anyone here have experience with this? Alternatively, I would consider using the filled bricks, but I’m not sure about the practical experience with those, especially combined with perlite or mineral wool.
Thank you very much for your answers.
Regards,
jayden1977
J
jayden197715 Jul 2013 09:55Hi Phillip,
thank you for your reply. Of course, I have also read about the disadvantages and issues with Poroton, but as I mentioned before, sound insulation is very important to me—actually more important than some of the challenges during masonry work. Until a few years ago, people mostly built with bricks, right?
Sure, the electrician will probably have an easier time working with aerated concrete blocks like Ytong instead of Poroton, but in my opinion, you only build once—or at least I do. I would rather have peace with the neighbors and build truly soundproof. My parents also built with bricks, and it works really well. Many of us have built with Ytong blocks now, and the sound insulation is not comparable. Regarding thermal conductivity, it’s true that aerated concrete is better, but because of that, you can’t compromise on load-bearing capacity and sound insulation.
For me, the question now is which type of Poroton block to choose (with or without filler). I’ve heard that the T9 blocks from Wienerberger or Unipor WS09 also meet the KfW 70 standard. Both of these blocks come without filler.
Regards
jayden
thank you for your reply. Of course, I have also read about the disadvantages and issues with Poroton, but as I mentioned before, sound insulation is very important to me—actually more important than some of the challenges during masonry work. Until a few years ago, people mostly built with bricks, right?
Sure, the electrician will probably have an easier time working with aerated concrete blocks like Ytong instead of Poroton, but in my opinion, you only build once—or at least I do. I would rather have peace with the neighbors and build truly soundproof. My parents also built with bricks, and it works really well. Many of us have built with Ytong blocks now, and the sound insulation is not comparable. Regarding thermal conductivity, it’s true that aerated concrete is better, but because of that, you can’t compromise on load-bearing capacity and sound insulation.
For me, the question now is which type of Poroton block to choose (with or without filler). I’ve heard that the T9 blocks from Wienerberger or Unipor WS09 also meet the KfW 70 standard. Both of these blocks come without filler.
Regards
jayden
B
Bauexperte15 Jul 2013 10:54Hello,
Soundproofing is no longer an issue with wall thicknesses of 36.5 cm (14 inches) or more; the interior walls on the attic or upper floor are more relevant. Neither hollow bricks nor aerated concrete are the ultimate solution here; the often unfairly criticized gypsum board or gypsum fiberboards are a good alternative and also unproblematic in combination with other materials.
No. Mainly, "red bricks" are used because they suggest warmth—appealing to the subconscious.
If you stick with hollow bricks, especially unfilled ones, and are sensitive to noise, you won’t be very happy with your attic or upper floor. You won’t achieve any significant soundproofing with walls 11.5 cm (4.5 inches) thick, whether built with hollow bricks or aerated concrete!
As I have written countless times, every type of block has its pros and cons; there is no one perfect building block.
Best regards, Bauexperte
jayden1977 schrieb:
Thank you for your response. Of course, I have also read about the disadvantages and issues with Poroton, but as I said before, soundproofing is very important to me—actually more important than some of the challenges during masonry work.
Soundproofing is no longer an issue with wall thicknesses of 36.5 cm (14 inches) or more; the interior walls on the attic or upper floor are more relevant. Neither hollow bricks nor aerated concrete are the ultimate solution here; the often unfairly criticized gypsum board or gypsum fiberboards are a good alternative and also unproblematic in combination with other materials.
jayden1977 schrieb:
Until a few years ago, didn’t people only build with bricks?
No. Mainly, "red bricks" are used because they suggest warmth—appealing to the subconscious.
jayden1977 schrieb:
Many of us have now built with Ytong, and the soundproofing is not comparable.
If you stick with hollow bricks, especially unfilled ones, and are sensitive to noise, you won’t be very happy with your attic or upper floor. You won’t achieve any significant soundproofing with walls 11.5 cm (4.5 inches) thick, whether built with hollow bricks or aerated concrete!
As I have written countless times, every type of block has its pros and cons; there is no one perfect building block.
Best regards, Bauexperte
J
jayden197715 Jul 2013 11:01Hi Bauexperte,
thank you for your reply. Yes, I’ve already realized that the perfect brick does not exist. I wanted to make the interior walls 17cm (7 inches) thick using hollow bricks, but this is still undecided because I have some questions left.
I saw that Silka interior walls are also good for soundproofing according to Ytong, but I’m not sure if that’s the right choice for me.
I really want to build with bricks or Poroton. I would also prefer to avoid external thermal insulation systems (ETICS / EIFS), but I’m still open on that as well.
Best regards
Jayden
thank you for your reply. Yes, I’ve already realized that the perfect brick does not exist. I wanted to make the interior walls 17cm (7 inches) thick using hollow bricks, but this is still undecided because I have some questions left.
I saw that Silka interior walls are also good for soundproofing according to Ytong, but I’m not sure if that’s the right choice for me.
I really want to build with bricks or Poroton. I would also prefer to avoid external thermal insulation systems (ETICS / EIFS), but I’m still open on that as well.
Best regards
Jayden
B
backbone2315 Jul 2013 11:03MeisterPhillip, are you a master bricklayer? Or where did you gain your experience with the T7/8/9?
B
Bauexperte15 Jul 2013 11:11Hello,
Find an energy consultant you trust and discuss the individual components of your building project with them; every project is unique! Step by step, you will learn how and under which conditions building with unfilled hollow clay blocks can be economically reasonable and justifiable.
Best regards, Bauexperte
jayden1977 schrieb:I can fully understand your preference to avoid ETICS, but only the questions that truly concern you on this topic can be answered by the forum and its users. Here you will find ideas, support, and tips; nothing more.
I really want to build with bricks or Poroton. I would also like to avoid external thermal insulation composite systems (ETICS), but I am still open-minded about that.
Find an energy consultant you trust and discuss the individual components of your building project with them; every project is unique! Step by step, you will learn how and under which conditions building with unfilled hollow clay blocks can be economically reasonable and justifiable.
Best regards, Bauexperte
J
jayden197715 Jul 2013 11:18Hi Bauexperte,
thank you for your reply. I will do it that way, but every builder and energy consultant is different. I contacted Wienerberger and Unipor to ask if I could use a Poroton block without insulation filling for a KFW 70 house, and they confirmed yes – the T9 hollow brick or Unipor WS09. These don’t require additional external thermal insulation composite systems (ETICS) and have no filling.
I just wanted to gather some experience from people who have built with filled Poroton blocks.
Regards
Jayden
thank you for your reply. I will do it that way, but every builder and energy consultant is different. I contacted Wienerberger and Unipor to ask if I could use a Poroton block without insulation filling for a KFW 70 house, and they confirmed yes – the T9 hollow brick or Unipor WS09. These don’t require additional external thermal insulation composite systems (ETICS) and have no filling.
I just wanted to gather some experience from people who have built with filled Poroton blocks.
Regards
Jayden
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