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Problem Solving Forum (8)

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During a week of heavy rain, we painted the interior of a heated concrete building. The paint blistered badly a week later on the walls with an outside exposure. What’s the best way to remove the coating, prepare the surface, and recoat to prevent future blistering?

Question posted November 25 to December 6, 2013


During a week of heavy rain, we painted the interior walls of a heated concrete building. On the interior of walls that had an outside exposure, the paint blistered badly a week after the rain subsided. Could the rain have caused the blistering and, if so, how?

Question posted October 28 to November 1, 2013


What is the best way to repair localized coating breakdown on steel?

Question posted March 11 to March 17, 2013


What causes blistering/crater formation in freshly applied polyurethane topcoats, and how can this be avoided?

Question posted March 4 to March 10, 2013


How can it be determined if moisture within a CMU wall is causing repeated coating failure? If so, can the source of moisture entry be accurately identified for correction?

Question posted December 24 to January 6, 2013


Under what conditions should small-diameter blisters (<1.5 inches) in a water tank lining be repaired/repainted? Should the blisters be broken and the substrate examined?

Question posted October 22 to October 28, 2012


How does rapid depressurization affect lining performance in vessels and line pipe, and how can you identify any failure that might result?

Question posted March 21 to March 27, 2011


What is the Cold Wall Effect? Can it cause premature coating failure and, if so, how do I prevent or minimize it?

Question posted December 20 to January 2, 2011


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