I've been thinking for some time now that it would be a great idea to rhino or lynex TT roofs. Seems much more supportive and will seal any imperfection a roof has. It must be a cost thing for the factory. The coatings have flex and elasticity, so there shouldn't be any cracking. I'll be going that route when it's roof replacement time.
My only thought is weight, anyone know the weight per sf on an average psreynon liner thickness? Shouldn't be any worse than adding the weight of an air conditioner setup