Originally Posted by
Salodin
The wallboards are most dangerous and suspect (wall and ceiling boards regardless of if they're drywall, plaster, gypsum, etc) from that age, but dont knock ceramic and vinyl tiles. Those dont fray as much as the wallboards, but if positive they're dangerous until professionally removed. Dont forget your mastic/adhesives either. If anything in your bathroom in glued to the wall or fixtures, get that glue checked out.
Protip: often the mastics were colored to illustrate what's in it. Specifically, black adhesive/mastic often contained a common type of asbestos found in north america, red mastic often contained one found elsewhere. The color of the glue isnt the be all end all, but in a house that old if I found any adhesive that was colored anything other than white I'd immediately assume it was positive and walk out until remediated. If it was white then I'd work around it until tested. At the end of the day everything that I'm not 100% certain was added after the 80s is getting tested.
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