I have four 4" steel posts that support the patio overhang. They are beginning to perforate with rust after 20 years. Rust extends about 8-12" from concrete base. The swimming pool chlorinated water also contacts these posts adding to their demise, as they are on the "wrong" side of the drain.
Do I have to replace them? Estimates are about $400 each - wow....
I have OSFO treated them, but am beginning to worry about structural support.
Any thoughts and appreciated.
Palm Beach Gardens, FL