Sound Insulation

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plaineolde's picture
plaineolde
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Sound Insulation

The sound insulation came from Boat US or West Marine; it's a kit; I think they have a regular and 'heavy duty' kit, I got the heavier kit which is thicker insulation. It included the foam, adhesive, attachment hardware and tape. I've planned to do the rest, inside the aft cabin, but haven't gotten to it. It really made a huge difference.

As you can see in the pic with the front hatch open, I had to cut away sections to clear the engine; quite a tight fit in there. I just cut double sided tape in the shape of each part that made contact, and closed the hatch; the tape stuck to the insulation and I cut away until I had clearance.

edit - didn't find it on West Marine's website (I've seen it in stores) but this is it -
http://www.defender.com/product.jsp?path=-1|311|302333&id=96141

Gary and Cathy Price
1997 C36 Mk II Tall Rig/Wing Keel Imagine...
Hull # 1617
Worton Creek, Md.
Northern Chesapeake Bay

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ProfDruhot
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Posts: 354

Great job Gary! The finished project looks I fabulous. I am planning on making the same modification myself. Can you recall, did you use the 2 " or the 4 " material?

Glenn Druhot
Carpe Diem
New Bern, NC
35* 6' 10" N / 77* 2' 30" W
2001 C36, Hull #1965
Std Rig; Wing Keel; M35B

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plaineolde
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I believe the sound insulation is 1". You can see the edge along the edge of the upper hatch in this pic. It's a sort of sandwich; foam, a tough solid layer, more foam, and a silver facing material. There's not a lot of clearance on the front and I had to cut away one foam layer to clear the pumps and power take off on the main crankshaft pulley. I've not seen 2" or 4", but I'd want to take some measurements first to make sure it would fit. 1" made a significant difference in the noise level in the cabin and cockpit.

Gary and Cathy Price
1997 C36 Mk II Tall Rig/Wing Keel Imagine...
Hull # 1617
Worton Creek, Md.
Northern Chesapeake Bay

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mutualfun
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Posts: 454

Gary:

I just got my insulation from Sailors Solution and will be doing our engine box this spring. I see you had mentioned that you had not yet done the rear aft cabin section.

That is an area that I would like to do as well but wanted to pick your brain a bit and wondered how you were going to do that section? I was thinking of using removable panels to enclose the aft section but am concerned about the heat. I know adding 2 blowers would help, 1 blowing outside air in and one sucking engine air to the outside.

What is your thought on how you were or have done your aft section?

Randy

Randy Sherwood
Mutualfun 1990 # 1057
T/R W/K M35a
Home. Charlotte, Mi.
Boat. St Augustine,Fl.

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LCBrandt
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Posts: 1282

This thread is made up from parts of another, the engine access thread. I used my moderator privileges in this Forum to split the engine access thread, peeling off the sound insulation posts into a new thread - the one you see here. Both topics seemed very important, and I wanted to make sure they got 'equal billing.' My apologies if anyone is inconvenienced by this change.

Larry Brandt
S/V High Flight #2109
Pacific Northwest, PDX-based
2002 C-36 mkII SR/FK M35B
 

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plaineolde
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Posts: 753

my plan for the aft cabin is just to do the removable cover, and the side of the engine box that faces the aft cabin (rest is already done.) I did not plan on doing the parts below the berth as there's a lot of stuff to work around.

One thing that's holding me back; I installed a Ample Power high output alternator along with a battery monitor, dedicated engine battery, etc. There are a lot of 4 gauge battery cables, solonoids, etc., on the bulkhead above the engine, under the removable cover in the aft cabin. The insulation is foil faced, and I'd be concerned about it shorting across the contacts on some of those components, if it ever came loose from the cover. So I'd want to make something to cover the cables.

Ventilation is something I've considered. I'd like to put something like a small cabin fan, low amp draw, to pull air from the ventilation ducts overboard, after shutting down the engine. The blower pulls air while the engine is running but I'd like something to pull all that hot air out of there during the summer while anchored.

Gary and Cathy Price
1997 C36 Mk II Tall Rig/Wing Keel Imagine...
Hull # 1617
Worton Creek, Md.
Northern Chesapeake Bay

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GaryB
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Posts: 583

There are references to pictures but for some reason I do not see them?

Gary Bain
S/V "Gone With The Wind"
Catalina 36', Hull #: 1056, Year: 1990, Engine: M-35
Standard Rig
Moored: Boothbay Harbor, Maine
Home: Auburn, Maine

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LCBrandt
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Posts: 1282

Gary, the pics are back on the original thread called "Engine Access Hatches." Sorry; when I split that thread into two to create this one something had to get left behind I guess.

Larry Brandt
S/V High Flight #2109
Pacific Northwest, PDX-based
2002 C-36 mkII SR/FK M35B
 

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