I recently read the article which is titled Heat, Rust and Noise and linked to the Vanagon site. I found this very informative and I want to try this. I am wondering if others have tried it and if so what their reactions to it are. .

I am wondering if it is ok to fill the channels talked about completely with the foam spray. Should I leave a spot open in the lowest part of each channel for moisture to escape? Can I use a hose to get the stuff in the channel above my windows in the rear side areas? Does it matter what expansion type of foam I use? Will the stuff expand so much as to push out any of the tin, assuming I use it only within the channels and not just in the wall cavities?

After opening up some of the panels I see that moisture has been trapped in side. The bit of yellow insulation I pulled out was damp on the bottom. I also see a small bit of surface rust on the inside of the cavity at the bottom along with some gunk. How do I clean this up before putting Kool Patch on? How do you steam clean? Also after I have the area clean do I pain the Kool Patch right to the bottom and perhaps up the inside tin of the cavity just a bit to make a bathtub effect in the bottom of the cavity?

I have located the Q-pads at a local retailer, I have not found the Kool Patch as of yet, nor have I found the NASA insulation. Do you have any suggestions in terms of new products that might improve on what you used (I am not sure when you wrote your article)? I know that 3M makes some great heat barrier kinds of materials.

Sorry for all the questions. Like anyone who is new to this kind of thing I feel like I really want to do my research, before I do something stupid.