Tiling onto a floor with old adhesive

[tilemekangaroo]

Hi everyone in tileland, I have to tile a toilet which has old adhesive on the floor what should I use to fix my standard tile to the floor? Any suggestions, would standard floor cement/adhesive be ok? thanks in advance.

[tommyzooom]

Is it old tile adhesive, or old vinyl adhesive?

[andy allen]

if its old tile adhesive, i would scrape up the loose, give it a good sweep and vacuum, prime then slc to get a nice flat surface.

[tilemekangaroo]

Hi Tommy, its old vinyl adhesive what should I do next?

[Phil Hobson]

A couple of things you could try, a heat gun and scraper will remove most vinyl adhesives but will leave a little residue. You could then use a polymer enhanced self leveling compound (slc) leave to go off, then tile, or you could stabilize the floor by brushing on a slurry mix of sbr. and a good cement based adhesive. I would try the first option myself. What is the sub-strate btw?

[tilemekangaroo]

Thanks for the reply phil, its a concrete floor. I'll burn off the adhesive and self level. Its not a big area at all. thanks for the advice, sean.