I have been very successful using Rustoleum brand hammertone finish paint,
the one that goes on over light rust and converts it such that it is
harmless. I painted rusted steel square tubes that are the 10 ft columns
holding up my back porch with it 8 years ago that still looks freshly done.
It is available in spray cans, quarts, and gallons but gallons are special
order at Lowes. Just brush, pressure wash, or otherwise remove any heavy
flaky rust and get the substrate clean for painting. No primer is needed or
desired. Rust that is not loose or flaky need not be removed. My source,
Lowes, stocks quarts only in silver and in black but I have found green in
spray cans at Ace. Some other tints are possible using the silver as the
base. I got a nice light green that way.
I used a precursor to this product, a rust "curing" primer also by
Rustoleum, (same chemistry as the paint) to prime the keel bolts/nuts in the
bilge of my live aboard sailboat where they were exposed to contact with
salt water and was amazed at how well it prevented subsequent rust/corrosion
for many years. They stayed rust free for over 10 years and I sold the boat
to a friend who had it for 5 years with no rusting before he sold the boat
and it was sailed away so we don't know just how long the coating would hold
up exposed to salt water.
My columns are painted black. I have a barricade/guard rail made of 4 inch
pipe between my guest parking area and two heat pump outside units. The
pipe is painted silver and seems to be holding up but I don't have as many
years track record on the silver yet, just 4 years but so far so rood, still
looks new.
I currently have a used tilt over crank up tower on saw horses being prepped
to be painted with this product. I fully expect excellent results.
I have also used cold galvanize with acceptable results. I prefer the cold
galvanize for anchors and their chains.
As always, YMMV!
73,
Patrick AF5CK
-----Original Message-----
From: Jack Berry
Sent: Thursday, February 07, 2013 9:31 AM
To: towertalk@contesting.com
Subject: [TowerTalk] Ospho & Cold Galv
Does anyone have experience with wiping down rust with Ospho and then
spraying on cold galvanizing?
I have used cold galv paint on brushed and cleaned tower rust. That seems to
hold up pretty well.
Using Ospho type products to prep the steel sounds like a good idea but I'm
looking for success stories before I try.
Thanks!
Jack - WE5ST
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