In our kitchen, we want to put ceramic tiles on top of cement board
I removed carpet from the kitchen floor (yeah, carpet!). Underneath
are pieces of original vinyl flooring (partial removal?) and what
appears to be two different types of adhesive (or other material) -
one is black, the other is yellowish. Both are solid enough where
removal will require lots of muscle. Below everything is 5/8" plywood
subfloor. The home was built in 1957.
Is the black stuff possibly mastic? Asbestos?
Could I leave the existing junk on the floor, use a leveling material
to even out the floor, and screw the underlayment on? Or should I
scrape it off and try to get down to the plywood subfloor before
putting on the underlayment? If so, how to remove?
Thanks for any help.