When we run across oxidation we will grind down the oxidation with either a dremmel or a wire brush attachment on a drill, lightly sand, and seal with a chalk sealer. Many times there is severe oxidation on the aluminum. We then seal all of the aluminum with a clear chalk sealer to ensure the top coat of paint will bond to the surface. We always hand-wash all of the aluminum to ensure all of the mold is removed, but also removing as much of the chalk and discoloration as possible. There are several ways to do it, but the most cost-effective way for the homeowner is to have your screen enclosure painted before you replace your screens. In the following picture you can see how labor-intensive it is to clean, seal and paint a screen enclosure. The homeowner was having most of the screens replaced and having part of his screen enclosure re-designed to a more modern look however, he did not like the look of the aluminum that he was not replacing.
This picture was taken in the verandah of a home where we here hired to paint the aluminum screen enclosure.
The good news is it can be fixed with a bit of Southwest Florida painting. In some instances I have seen it where it turns it a yellowish gold color. As time goes on Mother Nature takes its toll on the aluminum and it starts to fade and turn a green color. What you are seeing is the discoloration of the existing coating of the bronze finish on the aluminum screen enclosure. What is this? What could be causing this? How can it be fixed? Then you notice it is in quite a few places on the enclosure. You try and wash it off but it is still there. You’re sitting on your lanai enjoying this great Florida weather and you notice discoloration on your screen enclosure.
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