Hot answers tagged underlayment
I don't know what Green Glue is other than it appears to form a gasket of sorts. My thoughts would be to try insulation along with layering some dis-similar materials to avoid conductive transfer. I'd suggest a sandwich of XPS foam, topped with cork underlayment, then your finish floor (which, ideally, could be dry-core subfloor panels topped with ...
Only top voted, non community-wiki answers of a minimum length are eligible