There is a lot to a roof. If he did not use drip metal what did he use to hold the metal facia to the wood facia??? If there is metal facia. Either way here in MI i you heat the building you have to by code have ice&water shield up 36" from the edge to prevent ice daming and leaks. As Shawnlee said drip metal is optinal, but I would put it on. I build homes garages sheds pollbarns and they all get drip metal, ice & water shield and the first row in double. Then ridge vent.