Are these asbestos fibers in the plaster


While screwing in an electrical cover in my new home (built in 1919) I noticed these fibers sticking out of the plaster or skim coat. I have not seen these anywhere else. Hope the picture loads. Are these asbestos fibers?enter image description here

Best Answer

Often, people talk about “old-fashioned horse-hair plaster,” but the binding agent in old plaster walls was more commonly cattle hair.

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I am reasonably sure it's not asbestos.