Are there dirty roofs with ugly black stains in Salem, New Hampshire??
Chances are you or the house next to you has signs of Algae,Moss or lichen on the roof. This is caused by an algae called (GLOEOCAPSA MAGMA) and it is feeding on your roof shingle and shortening the life of your roof. Brian C. Jackson is a local Roof cleaning & Exterior cleaning specialist and can and will safely clean roofs infested with this algae. A proper roof cleaning according to the (ARMA) Asphalt Roofing Manu