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  #1  
Old 12-10-2012
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Sound Proofing

I will be putting a new Motor in my 32'ketch and figure I should soundproof the Engine room before doing so. It is a single cylinder Yanmar YSM-12 so quite noisy but has never been soundproofed. Any suggestions on products, things to keep in mind, tips etc?
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Old 12-10-2012
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Re: Sound Proofing

Noise & Vibration Control Products

Everything you need to know about marine soundproofing. Barrier 104 works great for diesel noise, I've used it on several boats.
Faster and night0wl like this.
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Old 12-10-2012
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Re: Sound Proofing

I'm halfway through this on my Bristol. JMS Online has some good prices on the Soundown products, but still I've spent about $300 so far. I used 1" thick with the barrier, doubled up in key places for 2". (key places = cabin sole and engine compartment doors)

As the engine noise gets quieter, other noises, eg rattles, are becoming more obvious - the campanionway sliding hatch, the hasps on the lazarettes, the swim ladder, the list goes on, they all rattle. I couldn't really hear them before. I will be going around with some self-adhesive neoprene to try and stop them.

I used the pin kit for the cabin sole, as I don't want to drill holes and I don't want the insulation falling down. 1 minute epoxy from the hardware store works well to glue the pins to the substrate.

For other surfaces I'm using 1" screws with 1" OD coach washers.

EDIT : The Soundown and the Barrier 104 look similar. I couldn't easily find an online supplier of the latter, last time I looked.
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Last edited by MarkSF; 12-10-2012 at 06:51 PM.
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Re: Sound Proofing

I'm doing this as well on a Cal 29. Lotsa info available on line. Bought from a local distributor because of shipping cost. This stuff is heavy, intentionally so to muffle the sound.
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Old 12-10-2012
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Thumbs up Re: Sound Proofing

I just installed Sundown Sound & Thermal Barrier this past weekend. It is heavy and expensive, but I am hoping it will be well worth it. I purchased the 1" Thermal & Sound barrier product, see here: Soundown Sound-Stop Foam Panel

I ordered 2 ea of the 1" Panels, 1 ea of the Installation kits Sundown Noise Reduction Installation Kit and an additional mounting kit Soundown Soundown Noise-Reduction Mounting Kit I have ordered one more roll of the Mylar tape to cover some edges Soundown Mylar Installation Tape, wasn't enough to finish. The two panels were just enough to cover what I needed, however I may get one more panel to cover the top of the engine but I doubt it. My primary goal was to quiet noise and reduce heat inside the cabin so I covered the quarter berth area, front engine access panel, and forward area near the galley sink. I left the area aft of the engine open for good air circulation as recommended by the engine rep. I had not realized until I really started installing the stuff just how many little spaces were open to the cabin = noise and heat. Once I completely finish taping the edges and sealing everything I am certain we will see a drastic difference, added to that the new engine should in itself be much more quiet.

Here is a link to the installation instructions. There was a little bit of a learning curve! Once I realized I can fill in and cover some of my mistakes with scrap pieces and mylar tape, I got over the fact that a couple of my seams were not perfect, but only after using a few choice words
http://www.soundown.com/Section%203%...structions.pdf




Last edited by T37Chef; 12-10-2012 at 09:00 PM.
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Old 12-10-2012
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Re: Sound Proofing

That looks very much like fiberglass/alum foil duct board material.
Hmmmmm?
Lotsa that about the house, as I just installed a new furnace and ducts!
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Old 12-10-2012
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Re: Sound Proofing

Quote:
Originally Posted by deltaten View Post
That looks very much like fiberglass/alum foil duct board material.
Hmmmmm?
Lotsa that about the house, as I just installed a new furnace and ducts!
Not really -- it's a sandwich of : foil < closed cell neoprene foam > lead.


BTW: Great looking job, Chef!
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Old 12-11-2012
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Re: Sound Proofing

Quote:
Originally Posted by deltaten View Post
That looks very much like fiberglass/alum foil duct board material.
Hmmmmm?
Lotsa that about the house, as I just installed a new furnace and ducts!
When you handle it, you realize the difference, this stuff is heavy - about 30lb a sheet.
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Re: Sound Proofing

Quote:
Originally Posted by PorFin View Post
Not really -- it's a sandwich of : foil < closed cell neoprene foam > lead.


BTW: Great looking job, Chef!
Thanks, I plan to fix the one joint/gap shown in the second picture, I know no one will ever see it once the engine is in, but I will know its there
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Re: Sound Proofing

Any body type any of the sound absorbing paints out there?
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