Brian C. Jackson cleans roofs that have ugly black stains on them and this is all over New England and that includes New Hampshire, Massachusetts, and Southern Maine. This staining is caused by and algae called gloeocapsa magma and it is feeding on the roof and shortening the life of the roof. Homes in Chester, New Hampshire 03036 have this same problem and the roofs need to be cleaned or homeowners will be facing a roof replacement. A proper roof cleaning should be done with a safe non pressure / soft wash application and not with a pressure washer or a power washer. The ARMA (Asphalt Roofing Manufacturers Association) does not recommend or approve of a high powered machine because of the damage that is done to the roof shingle and the dislodging of the granules. Visit www.jacksoncontracting.net for more info on roof cleaning or any of the other exterior soft washing services and you can also request a free estimate or call Brian @ (603)401-8408.