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The D+D Guide to Urethane

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News (10)


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Solve It! (3)


On guardrails on a marine wharf, grating panels consisting of mild steel bars about 1/8-inch by 1-inch on a 2-inch-square grid were painted with a three-coat zinc/epoxy/urethane system. Inspectors are finding numerous pinholes in the finish coat along the inside corners of the grating where the 1-inch-thick bars meet at a 90-degree angle. These pinholes were not noticed in the zinc or epoxy coats, but the final coat's visual inspection is more detailed. What is the likely cause of the pinholing, and what could be done to prevent it on future applications? Also, what should the disposition of the parts with pinholes be, as in, repair, accept as is, reblast and recoat, or an alternative?

Question posted March 20 to March 26, 2016


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

Question posted April 13 to April 19, 2015


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

Question posted October 24 to October 30, 2011


Articles (9)


From Stradivarius to Hardwood Floors:
How Coatings Protect and Beautify Wood

D+D In Depth August 2016 - Allen Zielnik, ATLAS Material Testing Technology LLC


International Roofing Expo

D+D February 2015


Flooring the Frick

D+D Online Feature - D+D February 2013 2013 - Jen Kramer


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