Rust Tales

Collected by Fred Hopengarten, K1VR

Copyright 2008

 

Tue, 04 Dec 2001 08:25:28 -0500 (EST)

Date: Tue, 4 Dec 2001 05:24:57 -0800 (PST)

From: GALE STEWARD <k3nd@yahoo.com>

Subject: Re: [TowerTalk] Looking for Ideas for Preserving Tower Legs

To: towertalk reflector <towertalk@contesting.com>

 

Go to: http://www.eastwoodcompany.com

 

They sell a product called CORROLESS RUST STABILIZER. I've used this product in some muscle car restoration projects as well as some tower/hardware repairs.  This stuff is simply painted or sprayed on the affected rust area. It can then be painted over or left "as is". I've never seen anything I've treated show any signs of rusting again, even years later.  This is the same stuff developed and used on offshore oil rigs. It's available in brush-on form or also in spray cans.

 

--Stew  K3ND

 

--- W9zr@aol.com wrote:

>

> I am running into a problem with my tower legs starting to rust and I am

> looking for some ideas.

>

> Background:

>

> When I installed an 80 foot Rohn 45 tower 8 years ago I anticipated moving within 4 or 5 years.  I installed it in 1 yard of concrete and left the top of the concrete 6 inches below grade and filled in dirt on top of the concrete.  I did this so that when I moved I did not have to deal with the buyer’s probable complaint of a concrete pad in the backyard.  In the past I would just cut off the legs and backfill dirt and nobody knew it was there. I realized then that if I did not move in 5 years I would have to do something to prevent the tower legs from rusting as they would be in contact with the moist soil.  BTW I did use sand and pea gravel at the bottom of the legs for proper internal drainage.

>

> 8 years have passed and it looks like I am not moving anytime soon.  So much for the best laid plans.  As a result I removed some dirt and closely inspected the tower legs and, while the galvanizing is gone, they appear to be solid but certainly have a fair amount of surface rust as you would expect.

>

> My initial thought was to sand and paint the legs and then pour a concrete cap to a level approx 6 inch above grade.

>

> Another thought was to sand and paint the legs and then coat them with 2 part epoxy.  After that I could wrap a layer of rubber self vulcanizing tape and then vinyl tape similar to we do for leak proof coax connections. With this setup could I just backfill the dirt and forget about the concrete?

>

> This is new territory for me but I bet someone out there in Towertalk land has had this problem and come up with a good solution.  I am all ears!!

>

> Randy

 

 

FH note See http://www.caswellplating.com/aids/rustbullet.html

 

 

[FH sent W9ZR a note asking what he did eventually. Here's the answer.]

 

Hi Fred

 

I got lots of advice as you can imagine.

 

What I decided to do was to dig down about 12 inches to the top of the concrete and expose all of the legs above the concrete so that I could sand them real well.  Then I used some hi tech paint that a guy recommended...it is meant for car frames...I will see if I can dig up the maker of it.  Then I made a form and poured concrete around the legs to 6 inches above grade.  I thinned the concrete just a bit to make sure that it bonded with the top of the old concrete ... strength was not the issue.  BTW my Rohn 45 legs were in great shape after I sanded them to bare metal so I did not have to reinforce them.

 

This all took many hours!

 

73 Randy

 

[FH inquired as to what was the product used. Was it the stuff mentioned above, by Eastwood?]

 

From: W9zr@aol.com

To: k1vr

Date: Wed, 7 Apr 2004 21:11:15 EDT

Subject: Re: Rust

 

Hi Fred 

 

That is the stuff.  Nr 1600Z.  Made by Eastwood.  It seemed to work great.

 

73 Randy

From: K4RO Kirk Pickering <k4ro@k4ro.net>

To: towertalk@contesting.com

Date: Fri, 10 Dec 1999 11:56:29 -0600 (CST)

Subject: [TowerTalk] Extend Rust Treatment

 

Several folks asked about a product called "Extend" that I wrote about recently on here.  I didn't save all of the queries, but several said they couldn't find it.  I found it at Home Depot.  Here is the info from a jar I have on hand.

 

Extend - Destroys Rust

RTS-8 Item No. 81138

Loctite Corp

North American Group

Rocky Hill, CT 06067

From: Eric Gustafson <n7cl@mmsi.com>

To: towertalk@contesting.com, hartley@smart.net

Date: Sat, 20 Nov 1999 09:54:10 -0700

Subject: Re: [TowerTalk] More STOPPING RUST

 

One caveat for use of this stuff to prevent rusting of tower and guy components is that it is UV sensitive.  So it should probably be overpainted with a fairly opaque paint after application.

 

-- Eric  N7CL

 

 

>Date: Thu, 18 Nov 1999 18:58:07 -0500

>From: Chuck Hartley <hartley@smart.net>

>

>Just thought I'd add another source of rust restoration /

>prevention products.  Like several others, I know of it from the

>automotive repair application.

>

> http://www.por-15.com

>

>-- Chuck / KM3V

From: K4RO Kirk Pickering <k4ro@k4ro.net>

To: towertalk@contesting.com

Date: Wed, 17 Nov 1999 11:04:54 -0600 (CST)

Subject: Re: [TowerTalk] STOPPING   RUST

 

I used a product called "Extend" that was available at Home Depot.  I'm really not sure what it does exactly, but it seems to turn surface rust into a very durable finish.

 

I had some surface rust on the bottom of my tower legs and applied this stuff.  There are no signs of any further rusting, after about 5 years so far.  My tower base is in concrete, but was not properly "domed," so dirt and water collect at the base.

 

I worried about the legs rusting out, but I don't see any further signs since applying the Extend.  There may be other similar products under a different name.

 

-Kirk  K4RO

From: GALE STEWARD <k3nd@yahoo.com>

To: towertalk@contesting.com

Date: Wed, 17 Nov 1999 07:43:33 -0800 (PST)

Subject: Re: [TowerTalk] STOPPING   RUST

 

The URL for Eastwood Co. is: www.eastwoodco.com

 

Once you are at the website, type "Corroless" in the search window and it will take you to the correct page.

 

--Stew  K3ND

 

From: K7LXC@aol.com

To: n4kg@juno.com, TOWERTALK@contesting.com

Date: Wed, 17 Nov 1999 10:47:48 EST

Subject: Re: [TowerTalk] STOPPING   RUST

 

In a message dated 99-11-17 07:24:02 EST, n4kg@juno.com writes:

 

> Given the onset of surface rust, what means are available

>  to stop or neutralize further deterioration of the metal?

>  In addition to cold galvanizing, are there other alternatives

>  to apply following neutralization?

 

      Sure. One is to use a product such as Rustoleum Rust Converter. Its application will neutralize further oxidation and forms a tough coating. I don't remember any additional specifics but the TowerTalk archives (www.contesting.com) may be helpful. This product is available at Home Depot

among others.

 

     The other thing you can do is to apply an industrial coating. This is done on commercial towers out in the field where it's not possible to re-galvanize them. Call an industrial coating supplier in the yellow pages and talk to them. There are epoxies available along with other types.

 

        In any case, surface preparation is the key. There are standards for surface prep (again, check the archives) that you can obtain if you're really serious. Either of these will add years of life to your steel tower structures.

 

--Steve    K7LXC, Tower Tech

 

From: GALE STEWARD <k3nd@yahoo.com>

To: towertalk@contesting.com

Date: Wed, 17 Nov 1999 05:26:53 -0800 (PST)

Subject: Re: [TowerTalk] STOPPING   RUST

 

There is a product that I have used in the classic car restoration area.  It is a paint type product called CORROLESS sold by the Eastwood Corp.  They sell auto restoration tools and supplies.  Don't have a catalog handy but they do have a web site.  This is applied directly over rusty metal after wirebrushing to remove any loose flakes.  It neutralizes the rust and seals against air and moisture infiltration.  Once its dry, it can be painted over.  It's apparently the same stuff they use on the offshore drilling rigs.  I've never used it on tower sections but works great on old muscle cars!

 

-- Stew  K3ND

 

> OK, I guess my request for information on TOWER Longevitity touched the deep dark secrets nobody wants to talk about since there were only two private (and very interesting) responses.

>

> Let me ask another question:

>

> Given the onset of surface rust, what means are available to stop or neutralize further deterioration of the metal? In addition to cold galvanizing, are there other alternatives to apply following neutralization?

>

> de  Tom  N4KG

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