Originally Posted by DEpointfive0

Then I have the weight of both.


When I originally installed it I laid down a nice layer of Plastidip for a few reasons, I figured it would "fill in" the gaps where I couldn't lay down the GTMat, it would be a 100% layer without air pockets and such, and in case I ever had to remove the GTMat, it would be MUCH easier with the PD... (The way these sound deadened work is by taking away or minimizing tibre [someone correct the spelling] so the trunk is like a drum, and this is rubber absorbing the vibration. PD is rubber to absorb more vibration [in my mind])

Glad it paid off, now I'll take off the GTMat and lay down a new layer of PD then put the foam on the PD.