awesomeissquid
SILVER Star
Good point on that! It definitely looks like a closer match; here is the spec page for DynaLiner. Looks like in the same 1/8" thickness it has a weight of 0.042 lb/SF.That's a good resource squid! Their product would be more comparable to DynaLiner rather than DynaMat. No time to compare even pricing, much less specs, at the moment but here's DynaLiner
Its important to note that when looking at sound deadening/sound proofing that there are three parts that come into play: stopping vibrations, blocking noise, and absorbing sound. Stopping vibrations is typically done by applying some sound deadening material to the metal to dampen vibrations (i.e. some butyl rubber). Blocking noise is typically accomplished with a heavy mass sheet applied over an entire area (i.e. some mass loaded vinyl "MLV" or Dynamat). Absorbing sound is typically handled by installing closed cell acoustical foam to capture the sound waves (i.e. some DynaLiner or Super Sound Proofing Mat).
Talking about sound waves its important to understand that there are different types, basically high and low frequencies (waves per second). Using common instruments, high frequency noise would be like a flute while low frequency would be like a tube. These sound waves that we are trying to stop look like this:
If we imagine the sound waves passing through some sound absorbing material, the high frequency waves will have more of the peaks and valleys in the material than the low frequency waves. This is why we can typically not add enough heavy weight material to stop all noise in a vehicle since it would require some pretty thick material and other steps need to be taken. @OwnerCS and @KillerBox are both on the right track with trying to stop panel vibrations.
For my application I think I am going to look to add some Dynamat or similar to the doors, and some closed cell foam to the roof to both absorb noise in the cabin and also to help with temperature control. My biggest concern is weight so I am trying to be mindful of that.
I hear 10sqm / 30sq. ft is about right for the entire interior minus the roof-lining... can anyone confirm?
