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Active Contributor

Join Date: Aug 2010
Posts: 13

Painting Specification

07/06/2011 7:44 AM

Hello there!

I want to know which is better in terms of corrosive effect and durability.

1. Primer

Epoxy Zinc Vs. Inorganic zinc

2. Finish Coat

Epoxy Mastic Vs. Polyamide epoxy

Also, pls. justify it by stating the paragraphs/articles in the Steel Structure Painting Manual (SSPM) Vol.1 3rd ed. & Painting Manual (SSPC) Vol. 2 8th ed.

Thanks a lot.

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Anonymous Poster #1
#1

Re: Painting Specification

07/06/2011 8:21 AM

It really depends upon the application conditions (ambient temperature, humidity, corrossive atmosphere- eg chemicals, sea-shore etc).

Usually red-oxide, Epoxy, Zinc Rich Epoxy, Inorganic Zinc Rich is in the increasing grade (and that is associated with the increasing cost and more importantly in more complicated and demanding paint application conditions).

We have had experience in all these categories sometimes or other and the Procedure Qualification of the Inorganic Zinc Rich has really made our life miserable.

The Finish (and some of the primers may need an intermediate or tie coat too) are likely decided by the application and then additionally the compatibility issues.

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Guru
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#2

Re: Painting Specification

07/06/2011 9:35 AM

The best thing to do is to contact various paint manufacturers. They know their products better than anyone.

Describe your particular application, and let them determine what system will work best. Once you have that information, it's simply a matter of picking the one that makes the most sense for what you want to do, based on cost, longevity and any warranties they may include.

Based on my experience, you want to use a complete system from one manufacturer. You are looking for trouble if you use a primer from one company, and a top coat from another. Any problems will fall squarely on you. They will both deny fault.

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Active Contributor

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Posts: 13
#3
In reply to #2

Re: Painting Specification

07/06/2011 9:42 AM

I already contacted the vendor but I just want to confirm their recommendation based on the said SSPC manual.

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Guru
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#4
In reply to #3

Re: Painting Specification

07/06/2011 9:51 AM

Again, it would be up to them to show you that the recommended products conform to the SSPC manual. Nothing we say will make a difference.

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Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. Ben Franklin
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Guru

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#5
In reply to #3

Re: Painting Specification

07/06/2011 10:36 AM

Then open the manual and read it.

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Guru

Join Date: Jun 2008
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#6

Re: Painting Specification

07/07/2011 12:17 AM

Go to : Progressive Epoxy Polymers. com, and talk to Paul--All is there--He exists because of your needs--

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