I recently went to measure up a floor it was 40m2 and it had carpet on, I picked up a corner of the carpet and found that it had parkay wood flooring underneath, when I picked a little of the wood up there’s a black glue substance on the floor,what can I use to get all the glue up with? Can I tile straight onto it? Or put a membrane matting down straight on top of the glue and tile directly onto the matting. Thanks fosters. sorry if this as been asked before