I know its not cheap, but have you considered using the spray foam insulation ?
We did the whole house ( outside walls / attic ) last year with this to save money and it also did a good job of I guess you could say soundproofing the house.
If interested, contact me and I can send a link and it will show a video of the work that was done.
We did the whole house ( outside walls / attic ) last year with this to save money and it also did a good job of I guess you could say soundproofing the house.
If interested, contact me and I can send a link and it will show a video of the work that was done.