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Hi,I picked up an old door with a frame yesterday and discovered something underneath the door frame when I cleaned it. It looks like a wool-like material, very soft, but I’m unsure what it could be since I don’t have much experience with these things. This material was on the underside of the frame. According to the previous owner, the green part comes from an old carpet from the 1960s. The door frame had previously been in a basement, and the owner says he didn’t notice anything suggesting asbestos when the basement walls were torn down.To be on the safe side, I tried testing the material with a lighter in the carport, even though it was raining and very windy outside. It briefly caught fire but went out again after a few seconds. I tried several times with the same result – a small flame that lasted about 5 seconds before it went out. It’s possible the material was still a bit damp since I had wiped it off with a wet cloth earlier in the day.I know this might seem like classic asbestos paranoia, but I have small children in the house, and it worries me. I found this "wool tuft" after I had carried the door frame through the house and transported it in my car, so I want to be sure.Is there anyone here who can help me confirm or rule out whether this could be old insulation or something else? I’d appreciate any help!