ᐅ What are the regulations regarding sound and noise in private new home construction?

Hello,

a question for the experts among you. Does anyone know which sound insulation values must be met at a minimum in new construction for a single-family house if no "enhanced sound insulation" has been agreed upon?

In other words, what criteria determine whether a single-family house is considered too noisy or not?
What legal requirements exist, such as building codes, standards like DIN, etc.? Can someone explain this thoroughly?

I am aware of DIN standard 4109. However, the guideline values there are somewhat unclear.
What about the recognized rules of technology? Are there specific regulations, court rulings, or other references that can be cited? For example, I have read that omitting an edge insulation strip or removing it prematurely before final floor covering installation does not comply with the recognized rules of technology.

In short: I am looking for reliable statements, guidance, rules, or standards :-)

Thank you

I have the impression there was a thread about this here before... From what I remember, there are no official standards regarding sound insulation in single-family houses, neither for interior nor exterior walls.

Of course, this does not apply to the topic of screed and its proper installation.

Regards, Yvonne

I will quote from our building permit:

The sound insulation values for the exterior wall construction, windows, and roof structure must be designed at least according to DIN 4109 – Sound Insulation in Building Construction (Requirements and Proof) – from November 1989. The relevant outdoor noise level must be taken into account in particular.

I would argue that a house not meeting DIN 4109 is considered defective. I assume the requirements are not particularly strict.

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

Thank you. I have since read that DIN 4109 is outdated and that, according to the Federal Court of Justice (BGH), recognized technical standards apply, which corresponds to VDI 4100 Class 2. This standard is significantly higher than DIN 4109.

The perimeter insulation strip is not missing but was installed incorrectly. The painter simply cut it off before the flooring was laid...

Nafetsm schrieb:
Thanks. I have since read that DIN 4109 is outdated and, according to the Federal Court of Justice (BGH), the recognized rules of technology apply, which correspond to VDI 4100 Class 2. This standard is significantly higher than DIN 4109.

The perimeter insulation strip is not missing but was installed incorrectly. The painter simply cut it off before laying the flooring...

However, this is not critical since every trained tradesperson knows that flooring should be installed without direct contact with the walls. The perimeter strip is for the wet screed.

Best regards, Yvonne

ypg schrieb:
This is not a big issue, as every trained craftsman knows that flooring should be installed without touching the walls.

However, the tile installer, where tiles are present, must be careful during grouting not to touch the wall. The parquet installer, if applicable, needs to ensure a small gap is left when cutting the flooring. And if both the tile installer and parquet installer are as thorough as the painter, then Murphy’s law comes into play.