 condensation
good point about tyvek being semi-permiable--will consider plastic instead. also good point about the poly. as far as the comment about stability after removal of the inner skin goes. you are right about removeing the skin, but i'm not leaving it off or driveing anywhere without it. i will be replaceing the 33 year old vinyl with new hardwood plywood as well as a liner of spray foam and the same number of rivets that A/S used originally. i may be wrong, but my figuring goes that i will most likely gain structure.
as far as bending and installing the plywood, i will go to the experts. we have a high-end plywood mfg. here in providence--allied plywood. when i get completely demo'ed and pretty well planned out, i am going to go over there and see if i can enlist their help. you know offer to give them a really nice set of 8x10 'before' and 'after ' pictures to hang in the office as a thank you for the help when i get done.
as we all, know everybody loves an A/S
do you think that sufficiant moisture would build up between the polyurathane and the tyvek/plastic vapor barrier to cause problems?
re the cold transfer along the ribs condensing lines on the wood, that's a real good point-- need to line those ribs with some kind of thermal barrier. what kind of a thermal insulator can you line the ribs with that still allows you to pop rivet into them?
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