Hi: We know the sound damping product as Isodamp E A R Decoupled
Barrier Absorber.

Comes in a 1.1" * 32" * 54" sheet. We get ours from Paynes Marine
Group in Victoreia BC

E A R Specialty Composites makes a variety of insulating products.
See www.earsc.com

Ian Allan ian.allan@bmts.com

> ------------------------------
>
> Date:    Sun, 6 Apr 2008 15:25:19 -0700
> From:    Don Hanson <dhanson@GORGE.NET>
> Subject: Insulating against noise in your van..
>
>   A product I've not seen mentioned in this thread is________.  I
> don't know
> the name of it.  But we used it when we built a very nice IOR racing
> sailboat, a while back,  to insulate the motor box.  This  racing
> yacht's
> Isuzu diesel motor was quite noisy and sat right dead center in the
> boat in
> the middle of the main salon under the dining table (for
> "mass-centralization" important in racing sailboats)  The material
> we used
> was a closed cell foam on one side, some kind of lead cloth and
> then a layer
> of vapor barrier that faced towards the open inside of the motor
> box.  We
> bonded it on with 3-M adhesive.  This stuff..wow, it really reduced
> the
> noise from that diesel auxiliary motor so that you could talk in a
> normal
> voice inside there with just that soundproofing and a few mm of
> plywood
> between you and the clattery diesel motor.
>   I guess you might find this material at a marine supply house
> online..I
> will be looking, as my van has a very noisy 'spot' in it's rpm
> range..probably a combo of vibration and harmonics from the tranny
> coming
> through the rear 'bulkhead' under the fold down seat.. It occurs right
> around 60mph in my 5th gear, where I often find myself driving.. I
> think
> this heavier material, with a good bond to the larger panels of the
> van,
> would negate some of the harmonic vibrations, as well as just
> killing the
> sound waves.
>   Don Hanson
>