Problem Solving Forum


October 24 - October 30, 2011

What can be done to prevent rust bleed in crevices when applying a zinc/epoxy/urethane system?


Selected Answers

From Eslope Iwema of TOTAL E & P Nigeria Limitedimited on October 31, 2011:
The crevices should be suitably dressed open to al ...read more

From bryan buckley of corcon inc. on October 29, 2011:
All of the above -- you must properly stripe coat ...read more

From michael beitzel of Modjeski and Masters on November 1, 2011:
If crevices are filled with unremoved crevice corr ...read more

From Billy Russell of D&R COATING INSPECTION on October 25, 2011:
Cut in epoxy with a brush and roller. Add a d ...read more

From jesse chasteen of schriener construction on October 24, 2011:
Many specifications address this issue with a requ ...read more

From Larry Muzia of Exceletech LLC on November 3, 2011:
     Obviously, this is a ...read more

From Thomas Hill of Lyon shipyard on November 2, 2011:

This is an easy fix. Devoe makes a product call ...read more

This is an easy fix. Devoe makes a product called 167 pre prime, a 100% wetting out epoxy. I've used it many, many times without any problems, and have always had success with it. I’ve used it in the tug and barge market inside of voids and ballast tanks that were heavily corroded and have never seen a failure with it.       

After you have apply your zinc, come back and stripe coat the areas in question. Allow the 167 to dry for 12 to 24 hours, depending on the temperature. After the 167 has dried, start your next coat. I’ve use this product for over 20 years on 100s of vessels, and have seen the return of these vessel many times and have noticed no problems. This is an excellent product.

From Stan Walker of Walker & Associates on November 1, 2011:
The most successful method is to blast the total a ...read more

From Tim Lederer of The Sherwin-Williams Company on October 25, 2011:
The crevices must be stripe-coated with the primer ...read more

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Tagged categories: Coating Materials; Epoxy; Rust; Urethane; Zinc