thinsulate sound insulation

[nilo]

need information on effectiveness of thinsulate sound insulation. i
am planning to use it between cabin bulkheads. has anybody have any experience or technical info to enlighten me?

[Polarity]

This stuff:

http://www.3m.com/us/auto_marine_aer...ic/marine.html

[nilo]

polarity thanks very much for yr reply. i've already checked the
official site. i am looking for personal experience and hopefully
comparison chances with other material.

http://www.thermalceramics.com/ is another product, which also
provides insulation against fire. H nave no personal experience with it, I found it while looking for alternatives to foam-in-place
foam for metal boats.

Tim Dunn

[gonzo]

Sound insulation can be done in two ways. One is to put a massive barrier that will reflect the sound. That is, a heavy material. The other is to have a thick barrier that will absorb the sound and convert it into heat or mechanical energy. There are also combinations of both methods. For example a rubber foam with lead backing. The choice depends on the application. A heavy trawler can use lead sheet without problem. However a light displacement boat couldn't handle the extra weight and may need a lighter system. Fiberglass and aoustic tiles work well but are thicker. They are fine if there is space. The BBC has great information in acoustics. They were one of the pioneers in the scientific study of sound deadening materials and designs. Also check out a book "The Science of Musical Sound" by John R. Pierce, Scientific American Books, if you want to get more theory. That book also gives a lot of good references like the experiments by Bell Laboratories.

[AAllen]

Supertherm works great I have had great success with this product. It is a ceramic paint product tha tcan back the claims they make with lab tests and field results. on the market for 15 years. want some email: technologynw@comcast.net

Have used thinsulate in engine rooms for sound and between bulkheads.
Have been blown away with its performance

Hi this is maybe a slight change of direction, but, I have a small river boat with an engine positioned in the middle of the deck. It is covered by a ply wood box and the noise while running means that it is near impossible to talk to people without shouting. Does anyone know what insulation I can get to put inside the plywood cover to keep the noise down? and where I might find it? It is going to need to be heat resistant as it will be right next to the engine!!
Many thanks

[wilsher]

Where can one actually buy this stuff in the US? I have tried contacting 3M at the 'official' website, but haven't gotten a reply. The closest thing I have found on the web is a distributor in the UK, obviously I'd rather buy from someone closer to home.

[gonzo]

Grainger sells it.

[wilsher]

Thanks for the tip, unfortunately thinsulate insulation doesn't show up anywhere on their website, neither the marine variety (MA-4700/6700) nor the regular acoustical insulation.
Even gave them a call, and they confirmed they do not carry it. The search continues, I guess...

[Ade]

Hi guys.....

Was just looking on the web for Thinsulate... so I apologise for jumping into your thread as a new member!!! I work for a company that is closely tied with 3M, and we provide Thinsulate here in the UK. If anyone ever has any questions feel free to email me on ade.jupe@d-m-s.co.uk and info can be found at www.d-m-s.co.uk

In reply to an earlier question about insulating Engine Bays... Thinsulate comes also in a 2" metal backed version. This provides a heat barrier, as well as a vapour barrier. Bear in mind that Thinsulate is a sound ABSORBER, not a barrier. It's kinda like a sponge in water.

Anyways.. hope this helps!!

Ade

[nilo]

gents thanks for all the contribution, i have not checked this forum for a while. in fact i tried to get thinsulate, but it was not available in turkey for small quantities, so i had to use lead covered with foam. although it improved the sound insulation between the master and crew cabins on my ferretti 68, still believe thinsulate might have been a better alternative with much less weight.