Aluminum Pool Screen Enclosure

Our aluminum screen enclosure was built in 1998 under Miami-Dade Hurricane Codes. It was built using 6063 alloy alluminum. In the past year we noted a strange discoloration beginning to cover the frame. It started as small greenish oxidation in a circular pattern and now covers almost 70% (my estimation) of the enclosure.
The company that installed the screen will not return my telephone calls even though I have stated that I recognize the warranty is up. I simply want to know how to fix this. I have pictures for anyone to view if necessary.
Can someone provide me with a solution to this problem?
Thank you
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
snipped-for-privacy@bellsouth.net writes:

Green indicates it's alive. No oxide of aluminum would be green.
Clean with bleach solution.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Dan Espen wrote:

Possibly and certainly wouldn't hurt to clean it with bleach and rinse well.
The aluminum is in all probability anodized so it isn't going to oxidize (anodizing is an oxide), but it's also likely a color dyed anodize and if the dye is lower quality and not UV resistant it could be fading.
If you were particularly anal you could dismantle the enclosure and bring all the AL parts to an anodizing shop to be stripped and reanodized.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Thu, 07 Jun 2007 05:37:55 -0700, snipped-for-privacy@bellsouth.net wrote:

That is just algea, you can pressure clean it off. The problem is the paint failed and it is absorboing water. If this is bronze (the brown color) you can paint it with spray cans once you get it clean and the charcoal screen won't look too bad. If it is white .... well now you know why white was a bad choice. Maybe a clear sealer.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Jun 7, 8:37 am, snipped-for-privacy@bellsouth.net wrote:

Thank you both for your suggestions. I tried bleach and chlorine but it did not remove the staining. This is not mold. A screen company I asked to look at the problem told me this am that the paint the installer used to touch up the scratches is now oxidizing. So it's repaint it or live with it. Any suggestions?
Thank you
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
snipped-for-privacy@bellsouth.net writes:

Pictures.
Some things don't compute. You say this is touch up paint and it covers 70% of the enclosure.
Bleach sometimes takes a day to do the job. I've cleaned white gutters with bleach with no apparent effect but come back a day later and they are sparkling white.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

What color paint?
A bronze color paint might be using powdered copper for metallic pigment which could oxidize green.
It wouldn't be bonded to the aluminum, though, just a polymer paint coating. See if it comes off with methylene chloride paint stripper.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.