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Mike Lamb

Name of insulation?

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I know this insulation was used at least into the 1960s. It probably contains asbestos. Does anyone know the name? This building is from 1917 but I doubt it is that old.

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Edited by Mike Lamb

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just when you think you know it all.  been calling it that forever and now I learn I'm wrong.  I thpught it was principally wood/cellulose fiber etc with cement or similar bonding.

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How about this one? Sent to me by another inspector. Used as backer for plaster in a 1908 Masonic Lodge. Looks like an organic predecessor to Tectum. Anyone familiar with it? 

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In my experience, there were 2 types of fiberboard used for backing plaster.  One is made from the waste fibers from processing sugarcane.  This was the original product of the Celotex Co.  The other is made with wood fibers.  What's in he picture is likely the latter.

The appearance (large, long coated fibers) and building age leads me to think it is Universal Insulite.  It was a popular brand.

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Wasn't there a product in the eighties called Euroboard that was a backer also.

 

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