Soundproofing finished legal suite
We have a finished basement suite that we would like to improve the sound deadening in the ceiling. Its finished with about r30 of insulation and 5/8" drywall
Two contractors are suggesting different solutions. Both involve leaving the existing drywall and insulation.
Install Sonopan ontop of existing drywall followed by res channel and then another layer of reg 5/8" drywall.
Install quiet rock 5/8" over the existing drywall.
Option #1 is cheaper but im concerned that this may produce a triple leaf effect. Both companies have experience with similar renos.
Let me know yout thoughts and if you have any questions