I plan to replace some vinyl tiles that were put down in 1975. The glue that was used was pale yellowish but there is what looks like black glue between the seems. I'm thinking that the dark color is the result of age since the glue was a pale color, but I want to check to make sure that it wouldn't be asbestos. There had been carpet over the tile for many years.
If the glue was originally pale yellow, it's not asbestos, right?