Posts Tagged ‘Clean Roof’
What are these black streaks on my roof?
Gloeocaspa Magma You will find black streaks on older roofs are caused by a bacteria called Gloeocaspa Magma. It travels in the wind and tends to thrive in shady parts of the roof or areas with lots of trees. This bacterium is often referred to as blue-green algae and it feeds on limestone which is…
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