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<blockquote data-quote="hispls" data-source="post: 8803044" data-attributes="member: 614752">I believe it has been proven that you get very diminishing returns from multiple layers or 100% coverage.&nbsp;&nbsp; Strategic placement on the largest and thinnest areas will give you the most improvement then save some for problem areas that reveal themselves after you put the subs in.&nbsp; If you&#039;re looking for a luxury car quiet ride you should consider working with MLV and CCF which should be full coverage.&nbsp; As far as keeping thin panels from rattling you shouldn&#039;t need to go overboard on deadening.&nbsp;&nbsp; Thicker will be better but I think even 80 can be a bit challenging to work with if you buy one with a thicker aluminum layer.&nbsp; I suspect anything thicker if they&#039;re making it now would be a lot of extra work to apply.&nbsp; Sealing doors makes a bigger difference, as what you&#039;re trying to do is create a sealed box out of them to separate the rear wave from the front wave.</blockquote>

[QUOTE="hispls, post: 8803044, member: 614752"] I believe it has been proven that you get very diminishing returns from multiple layers or 100% coverage. Strategic placement on the largest and thinnest areas will give you the most improvement then save some for problem areas that reveal themselves after you put the subs in. If you're looking for a luxury car quiet ride you should consider working with MLV and CCF which should be full coverage. As far as keeping thin panels from rattling you shouldn't need to go overboard on deadening. Thicker will be better but I think even 80 can be a bit challenging to work with if you buy one with a thicker aluminum layer. I suspect anything thicker if they're making it now would be a lot of extra work to apply. Sealing doors makes a bigger difference, as what you're trying to do is create a sealed box out of them to separate the rear wave from the front wave. [/QUOTE]

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