[TowerTalk] galvenizing vs painting a tower platform

[Tom Sessions]

I have to whole heartedly agree with Daron N7HQR.

Two part epoxy oil based exterior (Marine, Polyurethane, etc.) paints are at 
the top of list for long term protection and sealing from rusting.  That's 
what the navy uses.  A similar paint is on your car.

Those paints are much longer lasting than cold galvanizing compound and much 
much much longer lasting than the basic Rustoleum paint, which is really 
just a coating, not a sealer, like any other typical paint (Krylon, etc.). 
The Rustoleum company has gotten a lot of mileage out of that name.

Occaisionally a miracle "one coat lasts forever - right over rust - paint 
product appears on these pages".  If it works for you, then go for it.  But 
after livng on the Gulf Coast I have seen nothing better than two part epoxy 
exterior paints.  They are expensive and labor intensive, requiring removing 
any rust first.

No paint lasts forever.

Tom K4RV


  ----- Original Message ----- 
From: "Daron J. Wilson" <daron at wilson.org>
To: <towertalk at contesting.com>
Sent: Friday, October 07, 2005 8:13 PM
Subject: Re: [TowerTalk] galvenizing vs painting a tower platform


>
>> Is the cold galvanizing compound adequate?  How many coats should be
>> applied?
>> Is it better than just painting it with regular paint?
>
> We use this on galvanized conduit where we had to cut threads, and on lots
> of other outdoor stuff on the coast.  It is better than nothing, but seems
> to last less than a year before rust sets in.
>
> You might consider a marine epoxy paint.  We've used this stuff on 
> untreated
> pipe and steel components with very good results.  It's expensive, but 
> seems
> to better than rattle can paints.
>
> Good Luck!
>
> N7HQR
>
>
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