Studio soundproofing dilemma

[C05mopolitan]

I'm working on the numbers for a ground up build, and the client is a professional musician

Her main concern is getting her office and mini studio completely soundproofed from her kids' rooms, which are right next door.
I'm thinking about using foam with mass loaded vinyl for a full seal, especially to stop that sound and vibration transfer. Has anyone used this setup for a similar project?

Any other ideas or tips you've found to work well for this kind of isolation?

 

[Th3rmoPro]

To really block out sound, think about using heavy vinyl along with sound-absorbing foam. This mix will stop sound from getting through and soaking up any that does, so your office stays nice and quiet for making music. Your neighbors will appreciate it

 

[brendanc]

I'm helping my sister build a small home studio too. We used MLV and foam, which worked well for voices and high sounds, but deep thumps still got through.

So we added special metal strips (resilient channels) and two layers of drywall with sticky stuff like Green Glue in between. That really helped stop the shaking and rumbling sounds. Have you thought about separating the walls or making the floor float?

 

[slvr22_bd]

I'm working on the numbers for a ground up build, and the client is a professional musician

Her main concern is getting her office and mini studio completely soundproofed from her kids' rooms, which are right next door.
I'm thinking about using foam with mass loaded vinyl for a full seal, especially to stop that sound and vibration transfer. Has anyone used this setup for a similar project?

Any other ideas or tips you've found to work well for this kind of isolation?

Foam is great for dampening sound inside a room but doesn't do much to stop it from getting through the wall. For a ground-up build, you want to focus on decoupling the structures and use double-stud walls. This breaks the path of vibration. You can also use resilient channels like @brendanc suggested, or clips to decouple the drywall from the studs. I also agree that using Green Glue between multiple layers of drywall is an effective option. Remember, sound will find the smallest leak, so be sure to seal every gap around electrical boxes and vents. Don't forget the ceiling and floor need the same attention!

 

[justjill]

Resilient channels or sound isolation clips on the drywall side help break vibration transfer too and don't forget the door and any HVAC penetrations; those are where most DIY soundproofing fails