However, some common types of growths that may be found on roofs include:

Algae: Algae is a common type of growth on roofs and appears as green or black stains. Algae growth is typically caused by moisture and humidity.

Moss: Moss is a type of plant that grows in damp environments and can appear as a thick, green layer on a roof. Moss can damage roofing materials if left untreated.

Lichen: Lichen is a type of organism that is a combination of algae and fungi. It appears as a scaly, white or gray growth on roofs.

Mold: Mold is a type of fungus that can grow on roofs and appears as black, green or brown spots. Mold growth can be caused by moisture and can lead to health problems if left untreated.

It’s important to identify the type of growth on your roof to determine the best course of action for removal or treatment