www.secretsofbattlefield.com there you can find out more tricks at each map! But what i can say about that roof- i made it only couple times, but it is awsome, especially when defending, just grab some pkm and let the hell begin!
your end tags in your original post is wrong..you need [/img]......Second,which building are your talking about?I see the one with the hotel flag anf I know of a spot in that area,but not sure which one you are thinking of.