Service
Black streaks and moss removed from asphalt shingles with a no-pressure treatment that the shingle manufacturers recommend.
The black streaks on Atlanta roofs are a bacteria called Gloeocapsa magma. It feeds on the limestone in shingles, holds moisture, and shortens roof life. Pressure washing a roof strips the granules and voids most warranties. We treat it with a no-pressure application that kills the growth; streaks fade over the following days and moss releases and rinses off with rain.
Under the old oaks in Grant Park, Druid Hills and Decatur, roofs collect moss and lichen faster than the suburbs. A treatment every few years keeps the roof looking new and keeps it drying properly.
Yes. No-pressure treatment is the method the Asphalt Roofing Manufacturers Association recommends. Pressure washing is what damages shingles.
Most disappear within a week or two; heavy moss can take a few rains to fully release.
