Best Insulation Ideas?

Roesbery · Post by **Roesbery** » Sat Apr 07, 2007 4:10 am

Any bright ideas as to the best products to insulate and sound proof? Other than fiberglass? Light weight, fire proof, water proof, non corrosive, ease of installation and removal for inspections - maintenance, non toxic, non deteriorating, reasonable costs???????

blueldr · Post by **blueldr** » Thu Apr 12, 2007 4:37 am

I've had good results using a foil backed, closed cell ,flexible foam designed for that use. I can't remember the name of the product, but I bought it from an insulation products distributer after consulting with their engineer. He seemed well versed with the problem and the requirements for FAA compliance in aviation use.

Roesbery · Post by **Roesbery** » Fri Apr 13, 2007 2:36 am

Sounds like the right direction. If your rememberer kicks in, might come up with a little more detail. Thats the trouble with us getting into the old timers catagory. Or was that something else? Thanks

4stripes · Post by **4stripes** » Fri Apr 13, 2007 11:54 am

When I did my interior, I chose not to install insulation. It traps moisture, and can promote corrosion.
I always wear good ear protection (david clark's) so noise is not a concern.
The thicker 1-piece windshield makes a difference of 2 to 3 db in noise reduction. Having good door, and window seals is a good investment too. Nice new carpeting also deadens the noise.
Cheers Eric

wingnut · Post by **wingnut** » Fri Apr 13, 2007 1:41 pm

Roesbery,
EAR Composites makes the product that blueldr describes.
http://www.earsc.com/HOME/products/Damp ... sp?SID=356

It is a peel-n-stick type. Foil back, closed cell. Cut to fit on the skin between structure. I think it reduces noise from dampening the harmonic vibration of the exterior skins, same as Cessna did with the lead sheet in later years. When we have floor panels removed for repair, we put it on the bottom surface of the panel, after epoxy primer, instead of the belly skin. I have seen corrosion develope under this stuff and do not install on bare aluminum structure. Try installing it on the backside of interior panels.

doug8082a · Post by **doug8082a** » Fri Apr 13, 2007 4:20 pm

FWIF, Airtex also has a similar product. Never used it, just saw it on their website.

http://www.airtexinteriors.com/catalogue/misc.htm

Roesbery · Post by **Roesbery** » Sat Apr 14, 2007 2:19 am

Good ideas. pulled all the old ratty fiberglass out when I put in a new headliner. We get a lot of condensation around here at times and fiberglass sometimes holds many pounds of water. Besides being nasty to handle. Whatever I get I don't want it to sponge up moisture, and less noise would be good, more warmth in the winter too. meet FAA fire specs or better, and not promote corrosion, and light weight. Thanks

dacker · Post by **dacker** » Mon Apr 16, 2007 12:40 am

I used a closed cell foam material from http://www.soundproofing.org, it meets the burnability standards (at least they provide a letter saying that it does).
I used about 27 square feet of 1/2" material insulating my airplane for an increase of about 20 lbs or so. I like the material and even thought about just using that for my interior for a utilitarian look. My airplane is still noisy, but I have a lot of wind leaks.
David