Green And Black Residue On Aluminum Siding

Green or brown or black algae growth.

Green and black residue on aluminum siding.

The green color comes from chlorophyll which is the same substance that makes plants green. It s hard to see shotgun fungus itself because it s only 2 millimeters wide. These stains occur naturally over time. Begin the process of cleaning oxidized aluminum by rinsing the aluminum to remove surface dust or debris.

You can apply wet forget with your feet firmly planted on the ground. Algae is found on siding that is shaded and stays damp. Algae is often confused with mold. When house siding begins to turn green it diminishes the exterior appearance of the home.

There are many different things that you can do to clean your aluminum siding and remove the back oxides. Algae often causes black stains on roof surfaces and green stains on other building exterior surfaces such as concrete photo above left decks and building siding photo below. Also known as artillery or cannonball fungus sphaerobolus it uses internal water pressure to forcefully fire its spores similar to seeds up to 20 feet away the fungus sets its sights on bright areas so that means it will aim for any pale surface that reflects light such as the siding on your house. Aluminum siding cannot rust and it s a very durable material however there are numerous things that can cause it to oxidize.

Oxidization can make the aluminum siding look ugly and it needs to be removed as quickly as possible. Green stains on siding are usually the result of mold mildew algae or moss. Fortunately siding can be cleaned to remove not only green stains but other dirt and stains that may be taking over the homes exterior. Thoroughly scrub the surface of the siding with a dual sided sponge or scrub brush.

If you have green and black stains on your siding clean it easily with wet forget hose end. Rinse the aluminum surface. If you are cleaning aluminum wheels or house siding use a damp cloth to wipe the aluminum or a hose to it with water. Algae very often appears as a flat green coating or stain on building siding and even on sidewalks and concrete photo above.

Algae stains usually green or brown sometimes black. If you have green stains on your deck or siding it s probably due to either cholophyta algae green algae or a cyanobacterium related to gloeocapsa magma. In our photo at above left shows a common condition that is found on many types of building siding. Algae on building walls.

If you are cleaning an aluminum pot or pan rinse the pan under a strong jet of water. The algae can cause black or gray streaks that seem to run down your roof.