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Old 01-11-2011, 12:57 PM   #1
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engine room insulation

im in the middle of replacing the fuel tanks in my trawler. While the tanks are out im looking to replace some of the insulation in the engine room. What can you recomend? Ive heard of the sundown insulation but its very expensive and im looking to hopefully find something on the cheaper side. thanks!
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Old 01-11-2011, 02:28 PM   #2
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RE: engine room insulation

Hiya,
** Mr. albin43.* TOTALY off the wall but what about more of the same (new and marinized, if it ever was) since the original "stuff" lasted this many years?
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Old 01-11-2011, 02:43 PM   #3
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RE: engine room insulation

Interesting thread- I wondered about possible replacement material also.* I was thinking maybe fiberglass duct board, the type they use to make duct work in attics and stuff.* It comes in sheets and is usually 1" thick and has a foil face on it.* I used to work for an hvac company and I know it has some ULrating for fire. I also know it is not so good for ducts because the air moving inside it picks up particles and they get in the air stream.** Installed as an insulation with the foil facing the engine compartment this would not be an issue. It is fairly cheap, not sure how well it soundproofs, but bet it is as good as acoustical tile.*
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Old 01-11-2011, 03:00 PM   #4
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engine room insulation

Quote:
JohnP wrote:

Interesting thread- I wondered about possible replacement material also.* I was thinking maybe fiberglass duct board, the type they use to make duct work in attics and stuff.* It comes in sheets and is usually 1" thick and has a foil face on it.* I used to work for an hvac company and I know it has some ULrating for fire. I also know it is not so good for ducts because the air moving inside it picks up particles and they get in the air stream.** Installed as an insulation with the foil facing the engine compartment this would not be an issue. It is fairly cheap, not sure how well it soundproofs, but bet it is as good as acoustical tile.
Do you want to insulate or do you want to sound deaden? Insulating is what it's made for, not sound deadening. The rubber foam with lead shield is the only way to go. Go cheap and you get exactly what you pay for.

*


-- Edited by Carey on Tuesday 11th of January 2011 04:45:01 PM
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Old 01-11-2011, 06:47 PM   #5
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RE: engine room insulation

Quote:
Carey wrote:


JohnP wrote:

Interesting thread- I wondered about possible replacement material also.* I was thinking maybe fiberglass duct board, the type they use to make duct work in attics and stuff.* It comes in sheets and is usually 1" thick and has a foil face on it.* I used to work for an hvac company and I know it has some ULrating for fire. I also know it is not so good for ducts because the air moving inside it picks up particles and they get in the air stream.** Installed as an insulation with the foil facing the engine compartment this would not be an issue. It is fairly cheap, not sure how well it soundproofs, but bet it is as good as acoustical tile.
Do you want to insulate or do you want to sound deaden? Insulating is what it's made for, not sound deadening. The rubber foam with lead shield is the only way to go. Go cheap and you get exactly what you pay for.

*You are probably right- My lehman 120 is quiet enough at crusing RPM to converse normally or listen to music without much effort.* I had an Albin 27 with a 155hp Isuzu engine that was actually painful at higher speeds. I was going to go the soundown route but sold the boat instead.** It was a great boat, but now if I want complete quiet, I pilot from the flybridge.* Just a soft drone and actually more sound from wind, and other boats.


-- Edited by Carey on Tuesday 11th of January 2011 04:45:01 PM


*
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Old 01-11-2011, 07:27 PM   #6
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RE: engine room insulation

We went the Soundown route seven years ago. It was/is expensive but the results are amazing. Before, had to raise the voice at the lower helm at 1750 rpm. Now easy conversation. Be sure to seal all openings between engine room and saloon.

Rob
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Old 01-11-2011, 11:20 PM   #7
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RE: engine room insulation

John,
Interesting, we have a Lehman 120 now and our previous boat was an Albin 27 but with a Lehman 90 and it was painfully loud although I think much of that had to do with the pilothouse design.
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Old 01-12-2011, 06:49 AM   #8
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RE: engine room insulation

Quote:
Daddyo wrote:

John,
Interesting, we have a Lehman 120 now and our previous boat was an Albin 27 but with a Lehman 90 and it was painfully loud although I think much of that had to do with the pilothouse design.

I agree there were too many hard shiny surfaces and the sound just seemed to bounce around.* She had a good turn of speed and when we wanted to get somewhere quick we actually used earplugs. Still the basic design of the boat was not bad, the noise is why we sold her.** JEP
*
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Old 01-12-2011, 07:50 AM   #9
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RE: engine room insulation

I used this product on Tortuga. Used it on hatches and areas in engine compartment that I could reach and it really made a noticeable difference in sound level in pilothouse. Orginally only fiberglass insulation held in place with metal screening. http://www.sailorssolutions.com/?pag...=SPM&submit=Go You can order what you need. Very easy to apply and I added metal duct tape over all the seams as well.
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Old 01-12-2011, 08:43 AM   #10
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RE: engine room insulation

I replaced mine with a product from Lowe's. It is a silver foil backed material, can't remember name, but its located in the place where all the duct work is found. It comes in a large roll and can be glues on with construction cement
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Old 01-12-2011, 09:46 AM   #11
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RE: engine room insulation

Quote:
marinetrader wrote:

I replaced mine with a product from Lowe's. It is a silver foil backed material, can't remember name, but its located in the place where all the duct work is found. It comes in a large roll and can be glues on with construction cement
*how is it?
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Old 01-12-2011, 09:02 PM   #12
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RE: engine room insulation

On my last boat it had a generator that did not have a sound shield. There is a guy down here that works in the plants building sound enclosures. He used a material that had lead encased in vinyl and it worked amazingly well. I paid $500 for it and that was custom made with all of the access points cut out. I would think that just covering a wall with it would be quite easy. In fact, the engine cover on my boat is some crappy azz foily crap that traps water.....Mainship really cheaped out on it. I am going to get this guy to put a layer on the engine cover....I am sure it would work great!
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Old 01-12-2011, 10:22 PM   #13
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RE: engine room insulation

This is the stuff I have in parts of my engine room. I intend to place it throughout.



http://www.cyber-bridge-marine.com/E...dproofing.html
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Old 01-13-2011, 05:31 AM   #14
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RE: engine room insulation

Hey I just clicked on the link, forgetting to hold down command (Mac) and it opened in a new window, have you done tweaked it John, or did Carey do something tricky to his link?
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Old 01-13-2011, 10:22 AM   #15
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RE: engine room insulation

Peter:

At the risk of sounding like a complete "dufus", I never knew about "holding down the command key when clicking" and have Just been clicking on the links for years. Would someone please enlighten me about this command key thing.
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Old 01-13-2011, 01:39 PM   #16
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engine room insulation

Quote:
SeaHorse II wrote:

Peter:

At the risk of sounding like a complete "dufus", I never knew about "holding down the command key when clicking" and have Just been clicking on the links for years. Would someone please enlighten me about this command key thing.
WaltThere are many key stroke commands that can speed up the process. Especially if your hands are already on the keyboard, and not on the mouse. I work primarily in Mac, so I'm not so savvy with PC keystrokes, but there are many shared by both. A quick example is "command/c" = copy, "command/x" = cut, and "command/v"= paste.*

*



-- Edited by Carey on Thursday 13th of January 2011 05:02:23 PM
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Old 01-13-2011, 01:49 PM   #17
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engine room insulation

Quote:
SeaHorse II wrote:
Walt

Do a Google search for "keystroke commands", then select the one that fits your operating system.


-- Edited by Carey on Thursday 13th of January 2011 02:52:15 PM
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Old 01-13-2011, 03:45 PM   #18
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RE: engine room insulation

Quote:
Carey wrote:Walt
Do a Google search for "keystroke commands", then select the one that fits your operating system.
Thank you, sir....consider it done.

*
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Old 01-13-2011, 04:06 PM   #19
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RE: engine room insulation

Highjacked
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Old 01-13-2011, 04:14 PM   #20
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RE: engine room insulation

Quote:
albin43 wrote:Highjacked
I prefer to think of it as a "teachable moment."

*
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