Fasten acoustic tiles inside cabs

I think I found a good way of attaching acoustic foam tiles inside speaker cabs:

Black Jack D.P.M. (damp proof membrane)

It's a odour-free, water-based bituminous rubber compound.
As far as I can tell it fulfils two functions: stick the tiles and and damp vibrations a bit like dedshete. Plus its a lot cheaper!

Anybody else tried it or similar?