Asphalt Roofs

Your asphalt roof has a common algae growing on it called gloecapsa magma along with green moss. Once algae and moss are noticeable, it will quickly spread and darken to all areas of your roof.

Algae is a problem because it will lead to moss and lichen. Moss and lichen grow roots into the granules causing them to lift. Removing the black algae streaks and stains will prevent the eventual growth of moss and lichen.

Zinc strips will not eliminate streaking that has already occurred. Zinc strips were designed as a deterrent to keep the streaks from ever forming in the first place. Zinc strips have not proven to be completely effective. However, we are happy to install them if you would like them.