Dynamat question

[Nothingface5384]

Just about any butyl based CLD is good skip the butemin/asphalt type
thats your first layer

Secondskin audios heatwave pro..or some other brand thermal matting like car insulation, or lavashield (not sure how these compare to each other..tempted to buy and test)
Then top layer you can do second skin audios luxery liner pro which has closed cell foam melted (not glued) to mass loaded vinyl.
or you can do seperated layer of CCF then MLV



Depends on how well you want a quiet ride