Gluing engineered to slab - sound reduction glue needed?

[harrymanimus]

I've had two places quote an expensive Mapei 995 and tout "sound reduction" for install. Do I really need this? There are other glues with a vapor barrier like Bostik Greenforce that are cheaper. Thoughts?

 

[havasu]

$319.00 a container! Wowza! Then again, you get what you pay for!

 

[harrymanimus]

Well, then again, sometimes you pay for what you don't need.

 

[C.J.]

How much more DB of sound reduction do you get from that specific noise reducing glue vs if you were to use plain ol regular glue? That’ll tell you if it’s worth it or if it’s just another gluten free label stuck on something that never had gluten to begin with.

 

[Tile Tom]

In my opinion it’s a gimmick. Gluing down hardwood with any hardwood glue will deaden the sound.

 

[havasu]

I used 995 in my house primarily because I needed it to lock out the moisture from peculating up from my concrete slab. The 995 was rolled onto the slab, then concrete nails used to lock in the OSB to the slab, then I laid the LVP.