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NC-2009 IEQc4.2:Low-Emitting Materials—Paints and Coatings

Blackening process for steel?

A project of ours is specifying blackened steel for some of the steel in our building. The issue is that the touch up material used for field touch up after welding is highly toxic, despite having 0 VOCs. I don't think this falls under the scope of any LEED credits but our concern is for the workers who have to apply this nasty stuff - has anyone had used the Instablack 333 or Presto Black Gel or have any alternative products they'd suggest?

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Tue, 01/24/2017 - 17:40

It seems like a very specific product, but IAQ inert after use - I would suggest OSHA approved respirators for field applicators, all unnecessary staff not to be in the area when work is being done, and high ventilation in work areas.

Tue, 01/24/2017 - 17:47

Thanks, John-David. I'll pass along your suggestions. Hopefully we'll find an different, more neutral product/process and can avoid the issue entirely!

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