Roof Cleaning Portland Or Roof Cleaning Portland Or Did you know that roofs all over the world are being replaced many years too soon? Take a good look around your neighborhood. Almost every house has ugly black streaks or destructive moss growing on the roof. Is your home next? Most Likely, Yes! Why the sudden explosion of roof staining? Modern shingle formulas include a variety of cellulose and limestone fillers which algae, fungus and moss find very nutritious. The appearance of black or green stains is the first sign that damage may be occurring. If this biological growth has infected your roof, it should not be ignored.  Keeping your roof clean with roof cleaning Portland Or is not only a health issue; it is a safety issue as well. When your roof is dirty, covered with leaves, moss, algae, standing water, or loose tiles/shingles, these are issues that reduce the value of your home and can actually cause physical health problems inside the home. In tropical areas, the moisture in the air can quickly leave a coating of moss and algae growing on your roof. If your roof is not in great repair and you have flat spots where standing water can accumulate, mosquitoes and other insects can easily make that standing water a breeding ground. YUCK! For those in dryer areas, sudden storms and blustery winds can easily leave tiles or shingles loose, or worse, leaves and branches can quickly become a hazard.