Another rusted columns...


Old 06-11-10, 04:47 PM
Thread Starter
Join Date: Jun 2010
Location: U.S.A.
Posts: 1
Received 0 Votes on 0 Posts
Another rusted columns...

I recently purchased my first home. Finally I now have time to tackle this problem. I have three support columns for my screen patio. All three of the columns, at the base, are completly rusted. The rust was neglected by previous owner. I have no idea what to do.

Some have told me to just bondo it and paintwont solve any future stuct. issues.)

Other have mentioned welding on a new peice ...

Any suggestions.

Please helpBeer 4U2

Old 06-11-10, 08:45 PM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: United States
Posts: 13,805
Received 252 Votes on 220 Posts
Only thing I could suggest is replacing them with green treated posts.
Old 06-15-10, 12:03 PM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 24,441
Received 750 Votes on 689 Posts
I would install new steel posts or have the bottoms cut off your old posts and new sections welded onto the bottom. Yours are shot so a cosmetic fix like body putty & paint will do nothing to support the roof. You could replace the steel posts with pressure treated lumber but most modern copper (green color) treated lumber is corrosive and may cause the surrounding metal to quickly rust/corrode. The preservative is especially corrosive to aluminum.

Judging by the palm trees in the background I suspect you may have to worry about holding the roof down more than holding it up. Whatever post repair you choose check with your local inspections dept to see if there are any hold down requirements. The bottom of your posts may have to be securely attached to the concrete footer/slab to help prevent the roof from blowing away in a storm.
Old 06-17-10, 08:52 AM
Join Date: May 2010
Location: South Florida
Posts: 376
Received 0 Votes on 0 Posts
First, you have a beautiful Silver Bismarckia, one of my favorite palms. Since new to home, that palm grows at a rate of between 1’-2’ of height each yr. depending on conditions, and reaches a mature height of 30’-60’ w/ the head spreading 20 or more ft. . . as it grows larger, it presents a danger should it be toppled during a hurricane, and lands on roof.

Basically, I agree w/ Pilot Dane’s suggestion of cutting off the bottoms of old posts and welding in new sections. Given that you’re in S. FL, this problem will repeat itself due to the highly corrosive environment (i.e., high humidity, salt air, heavy rains). If needing to go the cheapest route, I would find a mobile welder (look under “welders” or “metal fabricators”). Instead of doing just a bead weld to join the two posts together, discuss w/ welder about making two plates for overlapping each joint (interior & exterior sides) which should make a stronger joint to better withstand hurricane force winds. On the replacement sections of posts, I would go w/ hot dipped galvanized as that will last considerably longer where rain water comes though the screens, and collects on concrete and base of post. You may need to get a screen specialist for certain parts of the screening work as their hourly rate should be appreciably lower, and the welder may not want to do that type work. If you bring in a screening specialist, you may want to change out the floor rail(s) as it looks badly corroded, and have him/her check the anchors securing it to concrete floor . . . most install Tapcon concrete screws which severely corrode in 10 or so years (you may be able to pop’em out by lifting up head w/ screw driver) . . . one reason why so many screened patios get damaged during hurricanes is the aluminum framing is poorly secured (or fasteners are rusted-away) and the framing breaks loose before the screening rips away. A few extra bucks for SS anchors is well worth the money.

If you can spare some additional bucks to create a more permanent fix, I would eliminate what appears to be a PT board which someone used in framing the screen door and which butts up against the metal post . . . beyond the corrosive effects of the treated wood, it also traps moisture thereby aggravating your problem. Normally, an aluminum section would be installed there instead of lumber (screen specialist will have that material). If not aluminum, I would go w/ composite lumber which will not rot out.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: