Soundproofing between above/below suites

[Jacob LeFebvre]

Hello everyone,

We have renovated two units to have a basement suite in them and noise is always a bit of a problem. 

Wondering if anyone had found a soundproofing solution that really works. I have asked many contractors and they have all suggest the standard stuff that doesn't work well ie. mineral wool. Any help is greatly appreciated!

[Eric Teran]

@Jacob LeFebvre rock wool and adding an extra layer of drywall help. However, to get the best result you have to separate the vibration. This is done by installing clips under the floor joists. I’ve used Genie Clips. The clips have a rubber pad on the joists side and the other a space for a hat channel. The drywall is then attached to the hat channel. The rubber piece stops the vibration. At the edge of the ceiling and walls leave a small space and fill it in with expandable sealant. The trick is to separate the vibration.

This is your best solution but most expensive. Then rock wool and then drywall. If you do all three then you will be golden.