Sound deadening

R

Roy

Member
Joined
Jan 1, 2000
RO Number
114
Messages
186
Anyone know of an effective sound deadening material that I can put under a carpet on the cockpit sole. The engine is below it and it's pretty noisy.

Thanks......Roy
 
The only products I am aware of are for use on the underside ( engine room side 0 of the cockpit sole.

Note that many of these products are useful in a limited frequency range. The nature of the sound determines the product chosen...
 
If you really want to knock down noise, you'll need to add sound attenuating material to the underside of the deck, as Bill says. Uf you really want to make a difference in noise level, you'll need to do the entire compartment, not just the underside of the deck. . .even the parts you can't reach!

Good luck.
 
There are a number if auto products used by audio installers to deaden sound that may be suitable for under carpet in a boat. Not sure how effective it would be as a lot of the sound isn't transmitted directly, it's resonating thru the hull via stringers, bulkheads etc..

Only sure way to drop noise appreciably would be to wrap the engine room and be sure to isolate anything that would transmit the sound thru the barrier ( like a genset box is)
 
Most of the automotive product is some sort of asphalt product with a foil backing. They dampen vibration more than absorb sound.
 
I have always wondered if that heavy sheet vinyl used for shower pans would work.
 
Thanks to all for your comments, and for Capt Bill1 - hey Bill try Googling Acoustiblok. Sound like exactly what I'm looking for - just don't know how effective it is.

Thanks......Roy
 
quote:
Originally posted by Roy

Thanks to all for your comments, and for Capt Bill1 - hey Bill try Googling Acoustiblok. Sound like exactly what I'm looking for - just don't know how effective it is.

Thanks......Roy

Click to expand...


Sounds interesting Roy. It also sounds very much like some of the stuff Sound Down has. I'll have to compare pricing. Thanks.
 
Chris, Thanks - looks promising. Did you use some of their products? Did it work?

Roy
 
Here is a link to a company that claims to specialize in noise insulation for boats as well as other applications.
They show under carpet insulation as well as underside insulation. They sell a kit that shows metal offset with long clips to apply sound deadening between the underside of the floor and the offset metal.
They have a "contact us" which I would try and ask for someone with technical info.

My 1999 vintage boat employs a thick material that is wrapped in a foil under the floor. I don't know the materials
but it is attached from under the floor with offset clips.
Good Luck

http://www.soundown.com/AI.htm
 
Not yet Roy, I am replacing the carpet in the boat in the spring so it seems the way to go. I have the acoustic panels on the underside of the ER but with Detroits they are a little noisy.
 
I'm going to replace carpet sometime this spring as well, I checked out a couple big box hardware stores for carpet choices. A
very nice sales lady showed me some interesting heavy density pad that is also compatible with the marine environment. I told her I was looking
to make the room a bit quieter from engine noise.
It looked like it would help, it was over 8lb density and easy to work with.
 
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