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Roof-shingle-algae-stains, black (or brown or green) algae stains on asphalt roof shingles misnamed as "mildew" or "fungus" by some writers, algae staining on asphalt shingles usually in shaded areas or on the more-shaded roof slopes- characterized by black staining fairly uniform over shingles, but appearing specifically in areas of the roof shaded by nearby trees.. The most common class of roof algae is gloeocapsa magma, a bacterium that eats water and expels oxygen. it causes the black stains you may see on your roof. the black stains are buildups of algae that can prevent the sun from burning off the bacteria. roof lichen is a combination of both algae and fungus., the first stains usually appear on the north-facing sides of a roof, which receives less light, and in areas with heavy tree coverage. algae travels through the air, so if one neighbor receives a....

Roof algae is not harmful or dangerous in itself, but after a period of time, the algae can cause the protective uv granules that cover roofing shingles to begin to come off, eventually drying them out. fungus—which also travels through the air—can combine with algae already present on your roof and form into lichen., inspectapedia.com common algae that form on roof surfaces, including asphalt shingles and roll roofing include the algae shown above and gleocapsa magma, a species that generally appears black on the roof surface but under some lighting conditions even on the roof gleocapsa magma can appear as a blue-green color as might other algae genera/species..

Hello all. often discussions here are about the houses we work on. this is about the last house i work on, my own. i built the house in 95/96. the […], about blackmolding.com. how do you get rid of black mold? this is the black mold resource now providing updated information on causes, prevention, removal....

Aircraft altitude is established by federal law. stated in title 14, code of federal regulations § 91.119 minimum safe altitudes: general “except when necessary for takeoff or landing, no person may operate an aircraft below the following altitudes: (a) anywhere. an altitude allowing, if a power unit fails, an emergency landing without undue hazard to persons or property on the surface., a liquid oral spray, herpeset is absorbed quickly into the blood vessels under the tongue to quickly releif your herpes symptoms safley, naturally and discreetly. stain h science project dr. kenneth h. roux - fsu biological science faculty emeritus.