Posted 9/2/2021 21:32 (#9199701 - in reply to #9196030) Subject: RE: Old Vinyl flooring
Agree with Steward MD, most likely an asbestos glue. We ran into it when we pulled up the linoleum in our kitchen a few years ago. Wife's BIL is a carpenter, he recommended not to disturb it, instead we covered it with Luan board and put new floor over that.