Need just a little more information? Check out these informative videos on lichen and moss ...
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Roof cleaning is not a homeowner project for obvious reasons, although many try to do it themselves prior to calling us.
Trusting House Shampoo as your roof cleaning solution, with the assistance of our highly skilled staff , is the best investment you will make.
With our proprietary, low-pressure, solution cleaning process, we efficiently and effectively kill 100% of the growth that is destroying your roof.
Thorough, gentle, and the results are really stunning.
So, whether you have a slight case of black algae streaking the north and east sides of your roof, or are in need of heavy moss removal,
or have green algae inundating your siding, there is no better source for cleaning and restoring all your expensive property features than House Shampoo, Inc.
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Moss- Prevalent in the woods on the north side of trees and rocks, this aggressive grower is a nuisance to cedar roofing and proliferates on shingle roofing where blue-green algae is host. The spongy moss flourishes in shaded, dark, moist areas. The more moss grows, the more moisture it traps beneath it. Roofing cannot produce lengthy functional performance where moisture is a constant. Like a wet blanket on your roof, trapped moisture degrades the shingle, tar paper and ultimately delaminates decking material (plywood), leading to leaks.
Lichen - Scientist's estimate about 6% of the earth is covered with lichens - it is an amazing and resilient bio-organism. Lichens have a symbiotic relationship with algae and is more destructive than algae because it grows deep root tentacles (anchors) that latch on to it's host. Eventually this results in lifting and detaching the protective shingle granules. When you see black streaks on your roof it does not always indicate the presence of lichen. Algae is a warning sign to take action before the serious and costly damage from lichen begins.
Blue-green algae, a.k.a. Gloeocapsa Magma, is a natural air-born spore that is part of our ecosystem. It thrives on surfaces where food, light and water are prevalent, especially on the north and east exposures. Black streaks on roofing and other exterior features are a symptom of an active algae colony infestation.
Black roof stains are surprisingly not dirt, jet exhaust, pollution or tree sap. The scientific term to describe them isGloeocapsa Magma "GM" or blue-green algae. Black streaks on roofing are a new phenomenon caused by changes in our climate, and in the case of asphalt shingles the introduction of limestone filler incorporated into the material. Roof algae is a naturally occurring cyanobacteriathat survives temperature changes and damaging UV rays by generating it's own protective outer sheath of deeply pigmented dead cells which cause excess heat and moisture to be retained. Infestation's of algae, lichens and moss result in impaired shingle performance with reduced reflective abilities. These conditions ultimately contribute to early decomposition of the shingles, premature roof replacement, higher energy costs and possible hazards to health.