My wife and I just stumbled onto a fantastic deal on a mobile espresso van in Arizona. It is fully self-sustaining with 2 45 gallon fresh water tanks on top of the van, a 50 gallon gray water tank underneath, a propane generator and just too many other things to mention. The original owners had the build out done by a guy in Texas. For the water lines he used Blue Kitec. The lines look to be in great condition overall, but some areas of the exterior (exposed to UV) pipe have the outer layers peeling off them. The aluminum part of the pipe is intact and looks just fine. Other than slight insulating properties does this external part (outer layers) of the pipe help in any way? Also, would it be likely that the internal layers would be affected by the UV rays since the aluminum tubing blocks any direct light getting inside the pipe? Thanks for any info.