BEST Underlayment options to silence noise from upstairs unit

[Austin Marvel]

Hey all, located here in the heart of the South....Columbia, South Carolina!

We have a 100 year old triplex and we're re-flooring the upstairs unit. 

We're going to tighten the squeaky floorboards, add some insulation below the sub floor then some LVP. 

Between the floor boards and LVP layer we're talking about integrating a sound proof underlayment...

I've been checking out QuietWalk, Cork and some of the other options online. 

Just wanted to check with the BP community to see if you guys have any insight for a rookie renovator?

We're also looking for an awesome accountant who can help me file as a real estate professional...if anyone knows of a local solution...

          -Austin Marvel

BTW the new multi-family book is soooo good @Brandon Turner & Brian Murray CRUSHED it on this one as expected! 🤘😊