ᐅ Sound Insulation According to VDI Guideline 4100 & DIN 4109 in Prefabricated House Construction
Created on: 3 May 2020 21:30
R
rainario1
Hello everyone,
I wasn’t able to find much or any information about the technical standards for sound insulation from prefab house manufacturers (timber frame construction) on their websites or in their building specifications. Neither regarding sound insulation against external noise (winds, traffic, etc. according to DIN 4109) nor sound insulation against neighboring buildings (where the stricter VDI 4100 standard should possibly apply).
Rhetorical question: Why is that?
...I’m starting to guess: I fear that the relatively demanding sound insulation levels II or even III of the VDI 4100 guideline can only be achieved with disproportionately high additional effort (and correspondingly higher costs)?
On the other hand, I found this in the wiki:
In a landmark ruling in 2007 concerning semi-detached houses, the Federal Court of Justice established that sound insulation levels II and III of the VDI guideline 4100, or the enhanced sound insulation according to Supplement 2 of DIN 4109, are to be regarded as generally accepted state-of-the-art standards, whereas level I or the DIN 4109 standard alone is not. (Federal Court of Justice, ruling from June 14, 2007 – VII ZR 45/06).[6]
The specification agreement did not have to explicitly mention the expected sound insulation, so sound insulation exceeding the previous DIN criteria becomes a normal part of the construction contract, provided it can be executed according to the generally accepted state-of-the-art standards. Uncertainties regarding the generally accepted standards were resolved by later Federal Court of Justice decisions, making high-quality sound insulation the default assumption in new builds. (Source: Wikipedia)
There are additional rulings pointing in the same direction.
I want to build two semi-detached houses to KfW40 standard using timber frame construction.
1. These should then be constructed “at least according to VDI 4100 SIL II or Supplement 2 of DIN 4109 without further mention in the building specifications,” right? That would be great!
But I don’t want to be that naive... I can’t find anything about this in the building and service specifications, and when I asked the manufacturer, they offered to install additional Knauf Diamant boards partially on the interior walls and a sound-decoupled ceiling (extra cost approximately 5000 euros per semi-detached house).
They say the stairs from the ground floor to the top floor are supposedly decoupled as standard.
I find that interesting.
2. Is there a prefab house manufacturer (timber frame construction) that is generally known to be particularly experienced in the area of sound insulation?
Having someone include a sound insulation certificate according to DeGA Recommendation 103 (2018) in the construction contract would be incredible (and probably just as unrealistic as uneconomical?)...
3. A building acoustician issues such a DeGA sound insulation certificate, but what does that report typically cost?
Does anyone have experience with this?
I won’t post a link to the DeGA Recommendation 103, but they have published quite a bit on this topic.
PS: As you might guess, I’m trying to resolve the apparent contradiction between timber frame construction and excellent soundproofing... maybe other builders face similar challenges.
I wasn’t able to find much or any information about the technical standards for sound insulation from prefab house manufacturers (timber frame construction) on their websites or in their building specifications. Neither regarding sound insulation against external noise (winds, traffic, etc. according to DIN 4109) nor sound insulation against neighboring buildings (where the stricter VDI 4100 standard should possibly apply).
Rhetorical question: Why is that?
...I’m starting to guess: I fear that the relatively demanding sound insulation levels II or even III of the VDI 4100 guideline can only be achieved with disproportionately high additional effort (and correspondingly higher costs)?
On the other hand, I found this in the wiki:
In a landmark ruling in 2007 concerning semi-detached houses, the Federal Court of Justice established that sound insulation levels II and III of the VDI guideline 4100, or the enhanced sound insulation according to Supplement 2 of DIN 4109, are to be regarded as generally accepted state-of-the-art standards, whereas level I or the DIN 4109 standard alone is not. (Federal Court of Justice, ruling from June 14, 2007 – VII ZR 45/06).[6]
The specification agreement did not have to explicitly mention the expected sound insulation, so sound insulation exceeding the previous DIN criteria becomes a normal part of the construction contract, provided it can be executed according to the generally accepted state-of-the-art standards. Uncertainties regarding the generally accepted standards were resolved by later Federal Court of Justice decisions, making high-quality sound insulation the default assumption in new builds. (Source: Wikipedia)
There are additional rulings pointing in the same direction.
I want to build two semi-detached houses to KfW40 standard using timber frame construction.
1. These should then be constructed “at least according to VDI 4100 SIL II or Supplement 2 of DIN 4109 without further mention in the building specifications,” right? That would be great!
But I don’t want to be that naive... I can’t find anything about this in the building and service specifications, and when I asked the manufacturer, they offered to install additional Knauf Diamant boards partially on the interior walls and a sound-decoupled ceiling (extra cost approximately 5000 euros per semi-detached house).
They say the stairs from the ground floor to the top floor are supposedly decoupled as standard.
I find that interesting.
2. Is there a prefab house manufacturer (timber frame construction) that is generally known to be particularly experienced in the area of sound insulation?
Having someone include a sound insulation certificate according to DeGA Recommendation 103 (2018) in the construction contract would be incredible (and probably just as unrealistic as uneconomical?)...
3. A building acoustician issues such a DeGA sound insulation certificate, but what does that report typically cost?
Does anyone have experience with this?
I won’t post a link to the DeGA Recommendation 103, but they have published quite a bit on this topic.
PS: As you might guess, I’m trying to resolve the apparent contradiction between timber frame construction and excellent soundproofing... maybe other builders face similar challenges.
tomtom79 schrieb:
[...] As someone living in a Schwörer prefabricated house, I can tell you: build solidly with sand-lime bricks, otherwise you probably won’t be happy. [...]Is it really that bad? What exactly bothers you? I'm starting to get nervous about what to expect from summer onward....
Well, when the kids are running around upstairs, there is noticeable noise downstairs. I had expected a bit more from one of the top manufacturers. Luckily, we aren’t too sensitive, but it is noticeable.
We also have KfW 70, with 34cm (13 inches) walls; I believe only the 40cm (16 inches) walls are available now.
We can hear low frequencies inside the house; for example, when a city bus passes by, we clearly hear the vibration. Fortunately, this only happens every 30 minutes, but starting at 6 a.m., it wakes me up, although my wife doesn’t notice it.
We also have KfW 70, with 34cm (13 inches) walls; I believe only the 40cm (16 inches) walls are available now.
We can hear low frequencies inside the house; for example, when a city bus passes by, we clearly hear the vibration. Fortunately, this only happens every 30 minutes, but starting at 6 a.m., it wakes me up, although my wife doesn’t notice it.
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nordanney9 May 2020 19:34tomtom79 schrieb:
Well, when the kids were running around upstairs, you could hear it rattling downstairs.It doesn’t matter how the house is built – only in a bunker with a ceiling a meter (3 feet) thick will it really stay quiet. It’s because of the kids.
We don’t move them along while they’re playing when that visitor is here. I have a direct comparison because we take turns living there—it's a high-quality masonry house made from 24cm (9.5 inches) blocks with a concrete ceiling.
What I didn’t expect these days is that the floor upstairs actually feels a bit springy. For example, on the ground floor it doesn’t, since the construction is different there, especially as we have rented out a granny flat.
However, the construction process with Schwörerhaus went so smoothly that this is really not a big deal. I think it’s just complaining on a high level.
What I didn’t expect these days is that the floor upstairs actually feels a bit springy. For example, on the ground floor it doesn’t, since the construction is different there, especially as we have rented out a granny flat.
However, the construction process with Schwörerhaus went so smoothly that this is really not a big deal. I think it’s just complaining on a high level.
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