Foam panel resource

I have been working on getting this box truck project back on track and one of the next steps is to reduce the noise by adding sound deadening panels to the walls around the TNT and the Vac reels.

I am looking at 1/4 inch thick neoprene panels from a place called "The Foam Factory", which seems to have about every kind of foam you could ever want. Price is about $38 per full sheet of neoprene.

http://www.thefoamfactory.com/acousticfoam/acousticfoam.html

One more resource to add to your list.

Nice resource Mil. Thanks.

Be careful installing that close to your machine or propane tank, you don't want something to ignite near the foam and cause fire.

Mil, I just installed black outdoor carpet on floors and walls inside our box truck, seemed to do really well reducing noise.

ACpower1 wrote:Mil,    I just installed black outdoor carpet on floors and walls inside our box truck,   seemed to do really well reducing noise.    

Was it marine grade? I know many of the marine stuff is designed for aluminum hulled boats so they include added sound deadening in the backings.

I have 1 inch neoprene throughout my butler van for insulation and it has held up well for well over a decade now. The only negatives are that they are pretty heavy and I don't know how well they will remain stuck to the aluminum panels. Even in the steel van, the ceiling will droop after a hot summer and need to be re-glued. I sure don't wall the neoprene to peel down the walls all the time.

I might have to look at that marine carpet for comparison. I could probably attach it with rivets that way and prevent the issue.

Would be interested to see what affect those foam sheets have on the notice level.

Have you looked at carpet padding the good stuff. I have used some in my van as carpet it looks like felt but has a rubber like layer on the bottom can be glued or tacked. Plan on using it to insulate the back of my van but I'm using scraps left after instillation of new carpet. What I have used on the floor so far has worked well just laying and it never moves.

ya its marine grade indoor outdoor black carpet, kind of has a rubber backing

That's the key, that rubberized backing. Our problem area with blowers is the high-frequency noise and that doesn't penetrate well....an inch thick media would absorb it.

From what I can find out, anything greater than an inch isn't necessary unless you are trying to block low-freq. sounds, which isn't a big concern with a blower exhaust.

Marine carpet, wool carpet padding, neoprene, egg-crate acoustic panels....all are beneficial.

I am still working on my plans, but I expect to use several medias in the project: Marine carpet; neoprene rubber; and egg-crate panels.

Wrap just the blower with that insulator Rob and then do your Decibel test.

Mo wrote:Wrap just the blower with that insulator Rob and then do your Decibel test.

It would be an interesting data point, but short-lived when it got hot.

My greatest concern right now is the engine. I think that is where most of the issue really resides and I don't know if there is much that can really be done about it without interfering with the cooling. This is definitely a case where these little v-twin engines can be a negative.

Maybe I just save the hassle and buy a case of ear muffs...just hand them out to the neighbors. Problem solved.