Unsightly roof stains (black mold algae also known as Gloeocapsa magma ) can diminish the look of your beautiful home. In the past, the only way to get rid of these stains was to re-roof the house. It is estimated that over 50% of all new roofs are due to the appearance of the roof and not to the functionality. These stains are almost impossible to remove without the aid of chemicals, and most roof cleaners sold may contain harmful ingredients such as lye and chlorine bleach that will eat your gutters and kill your grass and plants. We use a high alkaline and high ph cleaner ( no sodium per carbonate, bleach or chlorine) that will not harm your plants or gutters. If your roof is plagued with these stains we can remove them in usually one half day. We provide a 100% guarantee to rid your house of roof stains or your money back. While we are at your house, we can also clean the black mold algae from your deck and/or fencing if requested.