Guides
Three questions worth answering before the wet season does it for you.
Moss and a permanently shaded slope make a roof look worse or better than it is, and a written read settles arguments a photograph never will. That is the inspection guide. Why the north face and the south face are not the same age is a lifespan question, and it explains most of what looks alarming from the driveway. Money is the third, and the decking line is the one nobody can promise in advance.