As Rollerboy states above they do compress the already thin insulation but worse than that anyone who has dismanteled the walls or floor will notice how much area has NO insulation at all. At least that the way it was with the few I have worked on. There were 1 sq. foot sections in the floor corners with no insulation at all and sections of the wall with none.
The spray on insulation in the Squarestreams is much better and more fully insulated. Too bad they don't do all of their current models like they did the Squarestream. Avion had spray on foam also so it proves that it can be done with the aircraft type construction of the current Airstreams. But why would anyone expect such an expensive procedure be used when they only sell for $50 to $100 thousand. Does Airstream think that anyone willing to pump out that kind of money wouldn't shell out a few hundred more to have it done right? On the other hand anyone who has worked on SOB of camper knowes what REAL crap the outer brands put out in compairason.
Guess it's never a perfect world no matter how much you spend, You just get a little closer to it by spending more.
"Shiny Aluminum Bodies will always turn a REAL man on"
Don't Let the Grass Grow under your Rig!
2004 GMC2500 HD Duramax~ 1987 Avion 30 P