Aluminum Siding Mold

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Old 01-30-19, 10:34 AM
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Question Aluminum Siding Mold

The exterior of our house is old white aluminum siding. Our neighbor's yard has an overhanging tree. There are several areas of the siding that are coated with a green substance, probably mold.

I have tried a few times to clean it off, but it comes back. Can anyone recommend a cleaning product to get rid of it once and for all?

Regards...John
 
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Old 01-30-19, 10:51 AM
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Nothing will get rid of it "once and for all". If you think there is, you're dreaming.
 
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Old 01-30-19, 11:52 AM
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Ya, unless you cut down the neighbor's tree it will come back and even that is no guarantee. On the bright side it isn't all that difficult to clean. The north side of my home when I lived in fla needed cleaning twice a year.
 
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Old 01-30-19, 04:46 PM
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Probably more like algae than mold, just going to have to clean once in a while with a cleaner with some bleach!
 
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Old 01-30-19, 10:58 PM
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You might want to try getting some zinc or copper strips used on roofs, cut them into thin pieces and slide them up into a siding joint above the problem area?

It works on roofs to prevent moss and lichens. If you get rain regularly on that area, might work there as well. Or possibly just spraying the area with water on a regular basis. Unfortunately, they have to be exposed so no painting to match.

No idea if it would actually work...but theoretically....
 
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Old 01-31-19, 12:20 AM
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Once clean and dry a fresh coat of a higher shean paint so the the mold does not have something to cling to may help some.
Any limbs over hanging your property line are now your property.
 
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Old 01-31-19, 04:54 AM
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Once clean and dry a fresh coat of a higher shean paint so the the mold does not have something to cling to may help some.
At some point the factory finish on aluminum needs to be redone. Aluminum siding paints well but there are a few steps needed to insure the new paint will adhere long term. Whenever mildew is expected to be an issue I like to add extra mildewcide [like M-1] to the paint. Hard to say from the pic if your siding is needing fresh paint.
 
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