I have a 2002 Travelaire TW250 4-season with a rubber roof & thermopane windows that is allways under a roof when not used. The trailer has not been used a whole lot in the last 3 years but its in gr...
Nothing wrong with a well maintained 11 year old rig. Put tires on and go enjoy. Roofs are good for 20 years. Might be worth the time to inspect the seams and reseal if you find deep cracks in the sealant. Randu