Green And Black Residue On Aluminum Siding

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

Green and black residue on aluminum siding. Aluminum siding cannot rust and it s a very durable material however there are numerous things that can cause it to oxidize. 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. If you have green and black stains on your siding clean it easily with wet forget hose end. Green or brown or black algae growth.

When house siding begins to turn green it diminishes the exterior appearance of the home. Hand scrubbing is very effective at removing chalk from aluminum siding. If you are cleaning an aluminum pot or pan rinse the pan under a strong jet of water. Begin the process of cleaning oxidized aluminum by rinsing the aluminum to remove surface dust or debris.

Algae very often appears as a flat green coating or stain on building siding and even on sidewalks and concrete photo above. The jet tip nozzle allows you to reach surfaces up to 30 so now you don t need to use a ladder to reach your second story siding. You can apply wet forget with your feet firmly planted on the ground. In our photo at above left shows a common condition that is found on many types of building siding.

Algae on building walls. The algae can cause black or gray streaks that seem to run down your roof. Two washes may be necessary to remove the chalk. It s hard to see shotgun fungus itself because it s only 2 millimeters wide.

Thoroughly scrub the surface of the siding with a dual sided sponge or scrub brush. There are many different things that you can do to clean your aluminum siding and remove the back oxides. Fortunately siding can be cleaned to remove not only green stains but other dirt and stains that may be taking over the homes exterior. Algae stains usually green or brown sometimes black.

Rinse the aluminum surface. The green color comes from chlorophyll which is the same substance that makes plants green. If you are cleaning aluminum wheels or house siding use a damp cloth to wipe the aluminum or a hose to it with water. Oxidization can make the aluminum siding look ugly and it needs to be removed as quickly as possible.

These stains occur naturally over time. 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.