Removed old carpet a while back and it was glued down in the early'70's. There is a black sticky glue type substance on the floor on top of old 1965 12" tiles now. What can I do to seal this on a budget? I want to install new carpet but not over this black stuff... I have been reading and I am scared I may have asbestos glue? Can I pour leveling cement with a sealer to seal it? Wow...what do people do on a budget?