Sound tech help needed

[dentedsub]

We have built a new dyno at work and they want to keep some of the sound out of the control room. Its block building with steel ceiling and foam roof. They don't want to spend a lot of money but so does any one know the best way to cheaply muffle some of the sound transfer between rooms? I was thinking glueing sheets of foam to the doors and maybe some of this on the ceiling https://www.grainger.com/product/SINGER-SAFETY-Vibration-Compound-49J956
Any body have any other easy ideas that could help?

 

[swtfman]

Owens Corning 703 insulation. It comes in 2'x4' panels up to 4" thick.

 

[dentedsub]

Thanks, I'll take a look

 

[Mattafact]

The 703 is a broadband absorber but to remove sound you need to decouple the 2 rooms from one another. Is cutting the foundation an option?