Hi ,
Your problem is simple but not easy. You want a clean roof but you don't want to venture up there yourself and risk life and limb. It might be that it looks bad and is embarrassing or you might not want to risk shortening your roof's life. Likely you feel some of both. Regardless, we understand.
Here
is a recent project where we gently solved a moderate moss infestation for the homeowner in the most gentle way possible to help maximize their roof's life as well as make it more sightly again.