The commercial soundproofing material is quite expensive.
The construction is:
1 layer of dense polyurethane foam apx 3/4".
1 layer of 40 mil vinyl sheet
1 layer of dense polyurethane foam 1/4"
1 layer aluminized mylar
Should be easy and cheap to make.
JR

wrote:

Anyone use any of that sound proofing foam like in the west catalog? I have
corsa switchable exhaust and I get a lot of engine noise and noise from the
corsa diverter plates from the engine compartment at idle. The exhaust
it's self is under the swim platform and not so noticable at idle. The boat
has a full width sun deck/engine cover and I've been trying to figure out how
I can sound proof around the engine.
tia

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