I SPEND A LOT OF TIME ON THE ROAD..AS A INSURANCE ADJUSTER...LAST YEAR I SAW THIS LAWN SIGN ABOUT "UGLY ROOF" I HAVE A LARGE CONTEMPORARY HOME , WITH MANY DIFFERENT ROOFS ...I NOTICED THESE BLACK STAINS ON THE NORTH FRONT OF MY HOME...I CALLED THE PHONE NUMBER ON THE YARD SIGN...AMERICAN ROOF BRIGHT CAME OUT AND EXPLAINED WHAT WAS HAPPENING AND WHAT COULD BE DONE TO CORRECT THE PROBLEM...THE COST WAS A FRACTION OF WHAT THE ROOF COST...AND IT LOOKS BRAND NEW..