Great Forum!
I hope you can help a little bit!
I´m drummer from Germany and I want to realize a soundproof room in a garage-like building in my garden. it´s called: "Groove Garten".
This building has these dimensions:
floor: 510cm x 410cm
wall_window: 230cm
wall_house: 280cm
and of course the other two walls with the slope.
There is only the one connection to the house. Under this builing is concrete and then the Earth! In the house live my parents and they are familiar to my loud drums, because in past I practiced in the cellar. But in future they should be less surrounded by my drums. The neighbors live about 15 - 20 meters next to our house. I hope you could get the most important details about my starting situation.
I want to make a room within room. Here my ideas:
First I wanted to start with a floating floor, but after reading here, I won´t do it. I think it´s better to built the walls directly to the concrete. Right?
Drums would be built on drum riser, like shown here in the forum.
Next to the walls:
I got at eBay a new and really heavy soundproof door with 42db, also a soundproof window with also 40db.
And the walls I want to built like this:
5cm air (more?) - reinforced steel wall system 75mm - within 75mm mineral wool - 2 layes of 12,5mm drywall (maybe 3 layers)
On the top I plan a freefloating ceiling, that is only connected to the new wall at house and window.
To the roof space and then the same construction like the walls, just 100mm.
Could that work that my parents and my neighbors don´t hear my drums too loud?
The acoustic inside the room will be another challenge.
I hope for some good ideas!
Thank´s a lot.
Best regards from Germany!!