Very nice work !. looks great !!. I feel for ya on the roof :-(, that is some long , hard work. if your bathroom walls are bad ?, more than likely, the roof decking is bad as well, and just putting rubber sealant on it is just a band aid. your call, but me ?, I would deff be inspecting/replacing what ever is wrong with the roof if it needs it ?. keep up the good work !.