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Date:         Sun, 31 Dec 2006 18:38:39 -0500
Reply-To:     Sudhir Desai <sudhir.desai@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Sudhir Desai <sudhir.desai@GMAIL.COM>
Subject:      Re: Acoustic properties of common materials
Comments: To: Nathaniel Poole <npoole@telus.net>
In-Reply-To:  <C1BD8121.27CA%npoole@telus.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

don't forget to think about condensation; another problem causer. ~ sudhir

On 12/31/06, Nathaniel Poole <npoole@telus.net> wrote: > I thought about it, but what Iım going to do is make sure everything is > sealed. Make sure there arenıt any sources of water ingress from the > outside, get handy with a caulking gun. Finish up with sheet poly before the > finish panel. Course I wonıt be able to do the front doors. But the other > night while on the highway I noticed that the wheel hump beside the seat was > absolutely freezing. Iım sure if I spat on it it would have frozen. You can > have all the heat you want blowing but when that kind of cold metal lines > the van ­wow. Iıll have to think what I should put down around there. Maybe > carpet underlay or something, underneath the rubber mat. On top of the > paint/cellulose. There is also a huge amount of noise coming from the nose > and and floor area. > > > On 12/31/06 2:08 PM, "Jake de Villiers" <crescentbeachguitar@gmail.com> > wrote: > > > You might want to reconsider Nathaniel. The fibreglass will retain moisture in > > there. > > That's where the foil/bubble/bubble/foil material is best. More R value and > > no water retention! :) > > > > On 12/31/06, Nathaniel Poole <npoole@telus.net> wrote: > >> See http://www.nrcratings.com/nrc.html. > >> > >> Aside from the acrylic/cellulose slop I'm putting on as a first layer, I'm > >> going to try to stuff the interior panels with fibreglas acoustic ceiling > >> tile. These aren't quite as good as what is listed above, but they also > >> provide thermal insulation. These have an NRC of 55% and Transmission > >> coefficience of 35%. That will make a big difference. And that's before I > >> install the cloth-covered interior surface panels. If there's still space in > >> the "walls" I'll stuff it with more fibreglas. > >> > >> Nathaniel > > > > >


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