Do you need your business or office cleaned, we got you covered. Elite Pressure Washing Services do everything from: construction clean up, drive-thru cleaning, gas station cleaning, gum removal, parking lot & garage cleaning, restaurant cleaning, commercial roof cleaning, storefront cleaning and warehouse cleaning. Sometimes you may wonder what those black streaks on your roof are from. It is a type of algae called Gloeocapsa Magma that feeds on the crushed limestone used in tile roofs and asphalt shingles. It is a type of algae that thrives in humid and warm climates such as our beautiful California weather. Rain then spreads the algae down the roof causing the black streaks. The black streaks are very likely to harbor a number of molds or fungi. Fungi normally begin their life cycle as an airborne spore that settles on roofs, especially the asphalt shingle ones. The spores on the northern exposure of the roof stand a better chance of survival because? That portion of the roof is the last part to dry after a rain or morning dew. This raises the humidity on the surface of the shingle or tile, thus creating a perfect feeding and breeding ground for molds or fungi.