What applies to sound / noise in private new construction?

Hello,

a question for the experts among you. Does anyone know which sound insulation values must be achieved at a minimum in a new build of a single-family house if "increased sound insulation" has not been agreed upon?

So what determines the assessment of whether it is too loud in a single-family house or not? What legal foundations exist, DIN standards, etc.? Can someone recite that by heart?

I have seen the DIN standard 4109. But it contains somewhat incomprehensible guideline values. What about the recognized rules of technology? Are there any regulations, court rulings, or other things that can be referred to? For example, I have read that omitting an edge insulation strip or removing it prematurely before the final flooring installation does not comply with the recognized rules of technology.

In short: I am looking for reliable statements / hints / rules / standards :-)

Thanks

It feels to me as if there was once a thread here... From memory, I would say that there is no DIN standard for sound insulation in the single-family house sector, neither for interior nor exterior walls.

Of course, this does not concern the topic of screed and its proper execution.

Regards, Yvonne

I will quote from our building permit:

The sound insulation values for exterior wall construction, windows, and roof construction must be at least according to DIN 4109 - Sound insulation in building construction (requirements and verifications) - from November 1989. In doing so, the relevant exterior noise level must be taken into account.

I would claim that a house that does not meet this DIN 4109 is defective. I suspect the requirements are not particularly strict.

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I would also immediately consider a missing edge insulation strip a defect. Is it missing in your case?

Thank you. I have meanwhile read that DIN 4109 is outdated and that, according to the BGH, one assumes the recognized rules of technology, which corresponds to VDI 4100 Class 2. This is significantly above DIN 4109. The edge insulation strip is not missing, but was executed incorrectly. The painter simply cut it off BEFORE the floors were covered...

Thanks. I have meanwhile read that DIN 4109 is outdated and that according to the BGH, recognized rules of technology are applied, which correspond to VDI 4100 Class 2. This is significantly above DIN 4109.

The edge insulation strip is not missing, but improperly executed. The painter simply cut it off BEFORE laying the floors...

But that is not serious, as every trained craftsman knows that the flooring is installed without contacting the walls.
The edge strip is for the wet mass.

Best regards, Yvonne

But that is not serious, since every trained craftsman knows that the flooring is installed without contact to the walls.

The tiler, as far as tiles are present, must be careful when grouting not to touch the wall. The parquet layer, if present, must be careful when cutting to leave some space. And if tilers and parquet layers are as conscientious as the painter, then Murphy's law applies.