I have some old linoleum tile downstairs that I plan to replace with ceramic soon. I have scraped a few of them up and they come right up but I see that they are held down with tar. Do I need to clean the tar off before installing the ceramic or can it go on top? If I have to clean it off, how? If not any special mortar or additive to make it stick to the tar?
This is on concrete.
This is on concrete.