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Technical Bulletin – RE: Algae Discoloration of Roofs

For many years, roof discoloration caused by algae has been observed throughout the United States and Canada. this is commonly referred to as “fungus growth.” The discoloration usually has a brown to black appearance, and may be mistaken for soot, dirt moss, or tree droppings. The primary species of algae being observed is Gloeocapsa Magma. […]

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