Green Slime On Siding

Green stains on siding are usually the result of mold mildew algae or moss.

Green slime on siding. When wet algae and moss can create slippery and hazardous conditions on walkways. Moss appears in flat or fluffy green tufts. Algae may also look black or brown as may some molds. The tiny organisms that grow on the roofs and walls of houses can be moss algae lichen or mildew or mold two terms often used interchangeably.

Add in your dish soap and bleach and mix it with your brush. When house siding begins to turn green it diminishes the exterior appearance of the home. Algae growth normally forms on the side of the fence with less sun exposure. Algae appear as a green slimy film.

Moss and algae can grow on almost any surface in wet or shady conditions. The photo at above left shows green algae on vinyl siding. By eulalia palomo updated december 09 2018 algae grow on lawn furniture during damp weather creating a green slimy film see references 3. All can create greenish blotches on siding.

Spray the dirty area with the hose to loosen the mess. Wait three to five minutes until your see the green starting to run. Click to enlarge any image small gray or darker round spots on siding that are about 1 16 in individual diameter particularly if the spots are slightly raised may be artillery fungus a mold spore. Test a small to make sure there is no discoloration with your particular brick or siding.

These stains occur naturally over time. Sun kills algae but. Fortunately siding can be cleaned to remove not only green stains but other dirt and stains that may be taking over the homes exterior. To remove the algae without using toxic chemicals try.