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Dan Espen

writes:

On Jun 7, 8:37 am, wrote:
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

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?

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.