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Getting It Right
Insights on intumescents

From JAC, April/May 2006

by Jayson L. Helsel, P.E.

Unique technology can deliver fire-protective functionality—and look good doing so. ntumescent coatings, which provide fire protection to structural steel building members, are being increasingly used in commercial construction and often constitute a key a...
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Tagged categories: Fire-resistive coatings; Intumescent; UL

Comment from Roy Bradley, (8/23/2011, 8:22 AM)

As a cautionary note, the single pack, water-based intumescent coatings are alkaline in reaction and there is a possibility that they will react with galvanised/zinc plated steel components and similarly with zinc rich primers, if applied directly, to result in wholesale bond failure. This may not be noticeable unless the coating becomes damaged or there is a fire.

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