What are the black streaks on your roof? The roof algae (sometimes called a roof mildew or shingle mold) actually feeds on the crushed limestone that is present in shingles from most asphalt shingle roof manufacturers. The roof algae is spread by wind and animals from roof to roof and is almost impossible to prevent. Why do more roofs have these streaks? In the past, shingles were constructed usin
g felt and asphalt. Now that shingle composition has changed to mostly fiberglass and limestone, the GM (gloeocapsa magma) blue-green algae thrives, using the limestone as their source of food. Why is it black and only found on the north- and east-facing sides of the roof? GM has the ability to form an outer coating, protecting it from UV rays. When there is no light or low light, GM has a blue-green color. GM’s other self-protective factor is that it enjoys the cooler, shady areas of the roof where moisture is usually present. Not only are the black streaks unsightly, but they could affect your home in other ways too. The algae can prevent your roof from properly reflecting heat from the sun, potentially causing your homes heating and cooling costs to increase. Once your shingles lose their ability to reflect heat they also tend to deteriorate at an increased rate. Why spend thousands of dollars replacing a roof that can be cleaned for a fraction of the cost? Keep in mind that black streaks on roof shingles are an environmental issue, replacing it will not prevent them from reappearing on your new roof over time. Why should you hire us? When you’re trying to decide whether to clean your roof or have a professional perform the cleaning... Some homeowners might want to tackle this project but without proper training and equipment, the end result could be a disaster. Call us today for free estimate! Let us make your roof look like it is brand new for a fraction of the cost!!!
