ᐅ Looking for Poroton blocks suitable for sound insulation requirements
Created on: 23 Nov 2019 13:32
L
lucciano-s
Hello everyone,
I’m a bit unsure and need your help regarding Poroton blocks, especially concerning sound insulation.
I am planning to build a single-family house (town villa, 10 x 10 m (33 x 33 ft)) including a basement.
The construction will use 36.5 cm (14.4 inches) unfilled Poroton blocks without additional insulation.
Unfortunately, there are noise protection requirements in the development plan because we are located in noise level zone 4 (66-70 dB).
The wall requirements therefore specify at least 40 dB sound insulation.
Which block would you recommend to achieve the best balance between thermal conductivity, strength/density, and sound insulation?
Example for 2 manufacturers:
For the S7 and S9, I can’t find any sound data at all. How is this usually handled?
I would really appreciate if someone could help me out here. Thanks!
I’m a bit unsure and need your help regarding Poroton blocks, especially concerning sound insulation.
I am planning to build a single-family house (town villa, 10 x 10 m (33 x 33 ft)) including a basement.
The construction will use 36.5 cm (14.4 inches) unfilled Poroton blocks without additional insulation.
Unfortunately, there are noise protection requirements in the development plan because we are located in noise level zone 4 (66-70 dB).
The wall requirements therefore specify at least 40 dB sound insulation.
Which block would you recommend to achieve the best balance between thermal conductivity, strength/density, and sound insulation?
Example for 2 manufacturers:
- Wienerberger T8 unfilled; 0.08 W/mK thermal conductivity; strength class 6; 41.6 dB sound rating
- Thermoplan S7 unfilled; 0.075 W/mK thermal conductivity; strength class 6; NO DATA
- ThermoPlan TS11 unfilled; 0.11 W/mK thermal conductivity; 49.5 dB
For the S7 and S9, I can’t find any sound data at all. How is this usually handled?
I would really appreciate if someone could help me out here. Thanks!
L
lucciano-s25 Nov 2019 11:58The development plan for our area states the following:
The required sound insulation levels of exterior components must be demonstrated during the building approval process, depending on the type of room use and room size.
However, this specification can be deviated from in exceptional cases if, during the building approval process, it is proven that lower noise levels occur at the facade in the individual case.
Does this probably mean that I will need a calculation?
The required sound insulation levels of exterior components must be demonstrated during the building approval process, depending on the type of room use and room size.
However, this specification can be deviated from in exceptional cases if, during the building approval process, it is proven that lower noise levels occur at the facade in the individual case.
Does this probably mean that I will need a calculation?
Yes, that is exactly what is stated in our documentation. So, the sound insulation must "actually" be proven through calculations, and the conclusion is not as simple as a wall with a sound reduction index of 41 dB meeting the requirement of 40 dB.
However, this also depends somewhat on the building authority. In practice, I have encountered different approaches (whether they are correct or not is another question). But I also know of building authorities that just want to see that the issue has been addressed. Ultimately, they want to avoid liability, so you cannot later claim that you have sleep disturbances, tinnitus, or similar issues.
I can already tell you that the calculation is purely theoretical. This does not necessarily reflect whether it will actually seem quieter or louder to you in practice.
The question is: what is the noise based on? Is there an acoustic expert report? Sometimes "hypothetical" situations are assumed that rarely or never occur in reality.
However, this also depends somewhat on the building authority. In practice, I have encountered different approaches (whether they are correct or not is another question). But I also know of building authorities that just want to see that the issue has been addressed. Ultimately, they want to avoid liability, so you cannot later claim that you have sleep disturbances, tinnitus, or similar issues.
I can already tell you that the calculation is purely theoretical. This does not necessarily reflect whether it will actually seem quieter or louder to you in practice.
The question is: what is the noise based on? Is there an acoustic expert report? Sometimes "hypothetical" situations are assumed that rarely or never occur in reality.