Sticks-n-staples--wow!

[luvrbus]

For years now the motor homes and travel trailers use the foam method 2 pieces of material on each side of the foam with metal at the top and a couple of pieces for roll over.
Old saying but you get what you pay for the Air Stream travel trailers will stay together in a crash so will the Newell and Foretravel coaches but those are high dollar Newell's are a mil+ and Foretravels are 750 thousand+ Air Streams are not cheap for a travel trailer.
Fwiw 
I watched a Country Coach MH being built at the factory it shocked me 4 bolts holding the upper part on the frame, these buses will kill you also in a wreck best advice is drive safe it is in your hands not the manufactures



good luck