How to rust-proof a metal pole


I have a steel pole holding up part of my house. It is bolted to concrete footings. I am about to build a deck around but would like to rust-proof the bottom before I do this to prevent any future issues.

Given that the bottom 30cm will not be visible, what is the best way I can ensure it will not rust? I was thinking some Kill-Rust primer and possibly some bitumen paint to keep the water away.

Best Answer

DA01 is correct about direct contact with concrete to a point. If the steel and concrete are above ground grade and the concrete is beveled enough for any water to run off or not collect around the pipe, then serious rusting will take a very long time. As far as rust proofing the steel pipe, clean the metal very well. Sand off any paint or other materials. Prime the steel with a zinc chromate primer. This is available in spray cans from Krylon. After 24 hours, coat the surfaces with truck bed liner. You can buy truck bed liner in either brush on or spray on cans. Use a couple of thin coats and overlap the bed liner down and over the concrete. This will give you a great water/moisture proof covering. Good luck