Hello everyone,
Until now, I always thought that Poroton TP had a slight advantage in sound insulation compared to aerated concrete.
However, according to the datasheets, this does not seem to be the case at all.
Both have a thermal conductivity (lambda) of 0.09 W/(m·K) with a U-value of 0.23, so in terms of energy efficiency, they are basically the same.
When it comes to sound insulation, however:
Poroton: Sound Reduction Index (Rw) 41.8
Porous concrete: Sound Reduction Index (Rw) 47.3
Are these values correct? Everywhere I read, Poroton is said to have better sound insulation.
Until now, I always thought that Poroton TP had a slight advantage in sound insulation compared to aerated concrete.
However, according to the datasheets, this does not seem to be the case at all.
Both have a thermal conductivity (lambda) of 0.09 W/(m·K) with a U-value of 0.23, so in terms of energy efficiency, they are basically the same.
When it comes to sound insulation, however:
Poroton: Sound Reduction Index (Rw) 41.8
Porous concrete: Sound Reduction Index (Rw) 47.3
Are these values correct? Everywhere I read, Poroton is said to have better sound insulation.
M
MachsSelbst27 Apr 2026 09:00There are both PP4 up to 480mm (19 inches) thickness and PP6 up to 365mm (14 inches) available. However, this doesn’t make much sense because you need more bricks to achieve the same insulation effect.
These are used when building higher than two floors, but not for a single-family house.
If you choose such a dense brick for soundproofing reasons, the rest of the construction must also be designed for sound insulation, including soundproof windows, all connection joints executed accordingly with soundproofing, reinforced concrete ceilings for the upper floor, and so on.
Are you building next to a federal road or under a flight path of an airport?
Because you also have to consider: as soon as you open a window in the summer or sit in the garden, even the most elaborate soundproofing becomes ineffective.
These are used when building higher than two floors, but not for a single-family house.
If you choose such a dense brick for soundproofing reasons, the rest of the construction must also be designed for sound insulation, including soundproof windows, all connection joints executed accordingly with soundproofing, reinforced concrete ceilings for the upper floor, and so on.
Are you building next to a federal road or under a flight path of an airport?
Because you also have to consider: as soon as you open a window in the summer or sit in the garden, even the most elaborate soundproofing becomes ineffective.
sarajevo83 schrieb:
We only have to choose between Poroton and aerated concrete now :-) sarajevo83 schrieb:
Both are offered to us at the same price. Same price means that cost does not influence the customer’s choice when working with this builder. This makes it easier for you to follow my stone mantra and base your decision on what the builder uses more frequently. If one option leads by 70:30 or even more clearly, go with the more common one; if it’s 55:45 or closer, I would call it a tie, and you can basically flip a coin. For porous bricks, filled and unfilled versions count together in this rating, and of course I would choose the filled version (or personally, I’d rather go with aerated concrete).
sarajevo83 schrieb:
However, for me the advantages of aerated concrete outweigh others simply because you can hang something on the wall later... I’ve commented on this nonsense several times, more than could fit on a single page ;-) With the right anchors (which obviously differ), upper cabinets, pictures, or satellite dishes can be securely mounted on both materials.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
S
sarajevo8327 Apr 2026 20:0911ant schrieb:
Price parity means that the price does not distort the customers’ choice for the builder. This makes it easier for you to follow my stone-mantra when deciding, based on what the contractor uses more often. If one option clearly leads by a ratio of 70:30 or greater, then choose the more common one; if the ratio is closer, like 55:45 or less, I would call it a "tie," meaning you could basically flip a coin. For aerated clay blocks, both filled and unfilled count together in this evaluation, so naturally, I would take the filled ones (or personally, I would lean more toward aerated concrete). The discussion here was about the unfilled Poroton T9 or the Xella Ytong, both with a thickness of 36.5cm (14 inches). Fundamentally, there is not much difference between them.
sarajevo83 schrieb:
This was about the Poroton T9 unfilled version and the Xella Ytong, both in 36.5cm (14.4 inches). Basically, there isn’t much difference in principle. So the blocks are only similar in price, not in value. Which clearly means that the aerated concrete "wins".
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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