[C320-list] Sound Reducing Paint Reports?

[Kirk McCullough]

Paint is a joke. In the industrial world where I earn my living noise 
abatement is critical.85 dB is the maximum sound level for 8 hours of 
exposure. Rock wool, or high density insulation as it's also known is used 
on equipment that emits more than 85dB. The thickness of the rock wool 
determines the attenuation level.. The West Marine kit uses this material 
and it works. Paint can't do the same thing.

Kirk
#124
----- Original Message ----- 
From: "Robert Seastream" <robert.seastream at comcast.net>
To: "C320-List" <c320-list at catalina320.com>
Sent: Thursday, September 13, 2007 4:17 PM
Subject: Re: [C320-list] Sound Reducing Paint Reports?


> My experience is that you need 'dead air' spaces to achieve insulation, 
> which leads to isolation, particularly in the case of noise.  Paint won't 
> cut it, although it may make the engine cover heavier, resulting in 
> reduced vibration of the cover.
>
> I chose the SailorSolutions tiles.  While they don't provide the 'up to 90 
> percent' noise reduction ('up to' is the disclaimer), my wife (unbiased 
> witness) says that the engine noise has decreased to near half what it 
> was.  I just know it's quieter.  I might have saved money by  purchasing 
> similar tile backed foam insulation at reduced price elsewhere, but didn't 
> see anything similar at Home Desperate or Lowser that qualified.  Hey, 
> it's a diesel.  I'd like to witness these quieter Perkins that I've heard 
> about.
>
> Bob Seastream
> 'Intuition' hull 906
>
>
> On Sep 13, 2007, at 2:30 PM, Henry LeSieur wrote:
>
>> I used the SR1000 paint and I am disappointed in the results. I can't 
>> really make any distinction in noise levels before and after application.
>>
>>   Hank
>>   #331
>>
>
>
>
>
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