We do not use a power washer, pressure washer, or any other type of gas engine devices to clean this roof. It is cleaned using the foaming action of an anti-microbial solution designed specifically for roofing shingles. The roofing manufacturer GAF has recommended us numersous times to their customers who are looking for a solution to their roofing stains.
Black staining and the streaking pattern is caused by rains pulling down the bacteria. The next phase of growth for a roof like this is the formation of moss and lichens. Lichens are a very serious destroyer of shingle. Of the 3 growths, lichen damage is the most severe.
Our company is located in Edison near Raritan Center. Feel free to call us for a free evaluation of your roof. Roof cleaning is very affordable compared to the cost of roof replacement. The cost of roof cleaning is roughly 5%-10% of the cost of roof replacement.
Thank you for your time,
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