What Causes Roof Stains On So Many Monmouth County Homes | NJ Roof Cleaners
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There are 3 primary organisms that cause so many blighted roof stains in Monmouth County homes: black staining which is a bacteria, moss which looks more like puff balls of grass, and lichens. Each one of these organisms deteriorates the roofing shingle by either feeding on the contents of the shingle, or by holding moisture into the shingle. Limestone is a major ingredient in the manufacturing of a roof shingle. Limestone is an organinc mineral which can be digested by the black staining and lichens. The biggest culprit of the 2 is lichens. See this video of a roof which has been deteriorated by lichen growth.
Black staining creates a slower death. This bacteria, called gleocapsa magma, is a hardy organism which develops a UV protecting outer shell that protects itself from UV rays and/or long periods of drought. It will never die or go away on its own. It can withstand harsh elements of winter and summer months. Pressure washing a roof will not kill this bacteria. It will simply blow live mold spores throughout the property. Most roofs that we encounter that have been pressure washed before have staining that grows back in the back and forth pattern of the wand movements of the person who previously power washed the roof. The manufacturers of roof shingles recommends using a strong disinfectant of bleach and water to insure a kill ratio of closer to 100%. Bleach can penetrate and melt the outer shell of the organinsm to insure its demise. High pressure water is only temporarily effective for removing most of the staining, but it leaves many of the spores behind. Non-pressure rof cleaning insures a cleaner roof with zero granular loss. See this video of a roof cleaning in Rumson NJ.
The customer had primarily black staining the he was interested in removing. There is no grey area about how to clean a roof. Chemical cleaning sounds scary, but the only other option is to have it power washed. This can cost you thousands of dollars in premature replacement of the roof. The harshest chemical used in the process is sodium hypochlorite. Look at a bleach bottle in your laundry room and you’ll find that this is the main active ingredient for this product. One thing we know about this product is that it is a proven non-carcinogenic disinfectant. It is used in swimming pools, hospitals, and the township uses it in the local water supply. It is a safe product and therefore used to treat the beatiful home seen in the video.
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