I can only speak to “Fat mat” product as that’s what I have used. The exposed side is like an aluminum tape it’s thick. So far with less then 300 miles I see no visible adverse damage to the fat mat I applied in top of wheel wells. To my ears it has made a big difference to the noise level inside when driving. My next project with it will be to line the compartment the generator is mounted in.
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Into the great wide open,under them sky’s of blue
Outlaw 38MB
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