I am looking for information concerning the proper use of a product named DRIcore? Anyone heard of it? This 2X2 product is supposedly an answer to creating a dryer/warmer floor on top of the existing cement basement floor. My issue is that I currently have 9X9 vinyl tiles on the basement floor with black glue/mastic underneath. Due to the possibility of asbestos, I have researched & been able to follow suggestions of safely lifting these tiles without breaking them but I'm not sure how to handle the glue/mastic. I'm concerned because the mastic will certainly splinter if I try to scrape it up & I have heard that it most likely contains asbestos. Can I leave the mastic on? The DRIcore people suggest to scrape up everything so the basement floor is bare so any moisture wont be blocked & can evaporate in the air space created by their product. For each 9X9 tile that comes up, about 25-30% of that space is covered with mastic. Will this create issues? I would think the vinyl tiling would be more of a culprit which I'm assuming I'm correct due to the mildew smell coming from the bottom of the tiles. Anyone have any ideas on how to safely & inexpensively remove the mastic? Or can I leave the amount that exists on & cover it with the DRIcore product?