Promotion of soundproof windows

Hello everyone,

I am also looking for someone who has experience with the funding of soundproof windows.

The building permit indicates that our property is located in noise level area V. Reference is made to DIN 4109, Table 10. Unfortunately, I can only find the version from 1989, can someone tell me how I can find out if there is a newer version?

Prescribed sound insulation values:
Bedrooms 50 dB
Living rooms 45 dB
Offices 40 dB
In addition, the installation of window-independent ventilation systems in bedrooms is mandatory.

While searching for sound insulation classes of windows, I came across the site "energieheld" where I read something about funding.

In our case, the noise level area V is caused by a railway line. According to the mentioned site, the contact for funding is the local branch of the Federal Railway Authority. I have already found the contact details of the nearest branch (Cologne).

My questions are:
- Has anyone ever applied for something like this?
- Is it worth it or is the time and effort not justified?
- How do you formulate the request?

Controlled residential ventilation/heat recovery is installed in all rooms on all floors. In addition, triple insulating glazing with laminated safety glass on the outside is planned, structure approx. 8/12/4/12/4 with a construction depth of 82 mm, possibly 90 mm. We planned that independently of the "noise level area V" issue, but it should already comply with the requirements of the building permit.

Beyond that, it would of course be nice to claim funding.

Thank you and best regards

Doesn't anyone have tips or experience with this topic? Too bad. I'll give them a call, I would just have liked to be a bit better prepared for this conversation. ;)

Doesn't anyone have tips or experiences on this topic? Too bad.

Who is supposed to know that? Funding is generally a voluntary service.

I'll give them a call, I would just like to be a bit prepared for this conversation. ;)

Better if you go "unprepared" – then your phone partner will feel accepted and be happy to help ;)

Greetings from the Rhineland

Who is supposed to know that?

Someone who was in the same situation and has already done it. I'm certainly not the first person with such conditions in the building permit. ;)

Someone who was in the same situation and has already done it. I am certainly not the first person with such conditions in the building permit. ;)

Conditions are one thing, voluntary subsidies something completely different.

It is a misconception to believe/hope that the forum can answer every question ;)

Rhenish greetings

So best not to ask the question in the first place? Let's leave it be, it doesn't lead to anything anyway.