Acoustic barrier materials
In searching for “sound proofing” solutions, one can get overly optimistic about the ability of materials to block sound or keep all noise out. While a material itself may stop noises from penetrating, the application/installation of those materials is what can make the final difference. A good material is mass loaded vinyl which, on its own, will stop many sounds from going through it, but only when used the proper way. Coming in both one pound and two pound densities, as well as outdoor variants, mass loaded vinyl can be an integral part of your noise reduction solutions.