[TowerTalk] Ospho & Cold Galv

[Patrick Greenlee]

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 at 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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