Mike Lamb Posted October 19, 2019 Report Share Posted October 19, 2019 (edited) 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. Edited October 19, 2019 by Mike Lamb Quote Link to comment Share on other sites More sharing options...
Les Posted October 19, 2019 Report Share Posted October 19, 2019 homosote. not always asbesto containing. Quote Quote Link to comment Share on other sites More sharing options...
BADAIR Posted October 19, 2019 Report Share Posted October 19, 2019 tectum 1 Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted October 19, 2019 Report Share Posted October 19, 2019 That's fiber-cement roof decking, not insulation. It's made with wood fibers and doesn't contain asbestos. 1 Quote Link to comment Share on other sites More sharing options...
John Ghent Posted October 21, 2019 Report Share Posted October 21, 2019 Very much not homasoate. What Kibbel said. Homasote Sound Barrier Sheathing 1/2 in. x 4 ft. x 8 ft. R-1.2 Sound Board Quote Link to comment Share on other sites More sharing options...
Les Posted October 21, 2019 Report Share Posted October 21, 2019 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. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted October 22, 2019 Report Share Posted October 22, 2019 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? Quote Link to comment Share on other sites More sharing options...
BADAIR Posted October 22, 2019 Report Share Posted October 22, 2019 looks like tectum from mi casa are they sure it's not a retrofit replacement for a previous ceiling Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted October 22, 2019 Report Share Posted October 22, 2019 Possible, but unlikely. Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted October 23, 2019 Report Share Posted October 23, 2019 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. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted October 23, 2019 Report Share Posted October 23, 2019 Thanks, that's probably it. I found a good description in this 1920 Sweets Catalog. Quote Link to comment Share on other sites More sharing options...
Les Posted October 25, 2019 Report Share Posted October 25, 2019 Wasn't there a product in the eighties called Euroboard that was a backer also. Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted October 25, 2019 Report Share Posted October 25, 2019 I don't remember anything from the 80s. Don't want to. I saw a photo recently showing my hair and how I dressed. Did you mean 1880s? 2 Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted October 29, 2019 Report Share Posted October 29, 2019 This why I come to TIJ. Good thread, good information. Quote Link to comment Share on other sites More sharing options...
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