Hello –

I am assuming these floor tiles in a 1950’s vintage house contains aesbestos. They are in the kitchen, bathroom and basement on concrete slab. (Only the basement tiles were found cracking and crumbling into pieces when I removed the carpeting.)
They are square marble textured tiles that are hard and brittle. They were installed with tar-like adhesive that are very dark brown or black. The tiles snap into pieces without any give.
If by some chance they are very old linoleum, does linoleum become very hard and brittle ?
Are there any visual clues to determine if they are made with aesbestos ?
(Yes, in our area I am allowed to simply floor over the stuff.)

Thanks for your help.