Was just looking over some RV sites and found something interesting.

On prepurchase inspection of any RV class A to class C (westy) the first
three points of the inspection were
Roof (from inside)
Floor (from underside)

Roof (leaks/corrosion at any entry points, roof seams, roof seals)
Floors (leaks/corrosion at any exit points for facilities, floor seams,
floor seals)

Condition of exterior paint and surfaces was next. Again it was for leaks
and corrosion with seams and seals again. (dents and dings was later on the
list)

Inspection of anything else was down the list.  This same inspection pattern
was reflected on a couple sites I went to that had inspection checklists.

I went out to my westy and just looked at it with just a floor and roof
inspection.  With a roof inspection I could probably know with a 80 percent
chance the corrosion status of the vehicle.  With a floor inspection from
under the van again I could give about an 80 percent shot at the corrosion
status.    

 A fail of roof or a fail of floor or a close call on more than one of the
three areas and I may not even care if the engine or anything else on the
vehicle worked at all.

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jimt
Planned insanity is best.
Remember that sanity is optional.
http://www.tactical-bus.info (tech info)
http://www.westydriver.com