Are you familiar with underlay for floating floor?
I'm thinking on putting impressive ultra on my floor which is the concrete slab. I'm worried of hollow sounds as mentioned by others here so thought of upgrading the underlay.
The standard is 3mm thermacustic underlay. We are giving a choice of 3mm 880kg soundblock 310 compressed rubber as an upgrade.
Would you recommend the standard or paying for the upgrade? Just wondering whether it will be worth it?
I seriously think it won't matter that much what the underlay is you will still get the DRUM as we call it. The compressed rubber would be beneficial for a two story home on the top floor. The lower floor will here less DRUM.