Hi! Wonder what you'd do about this. Whoever built the addition to my house maybe 30 years ago, over a slab, put a section of ceramic tile flooring, 8 x 4 tiles, by the front door (see photo). About 20 of these tiles eventually got loose and now I'd like to reset them. In pulling off the loose ones and cleaning out the grout, I see they laid the tiles with yellow stuff, I guess mastic and probably asbestos-containing, on a sheet of particle board. Most of this board is sound, but the detail shot shows that a chunk of it stuck to one tile that I pulled up. Can I get another few years by just laying down more adhesive, putting the tiles back in place and re-grouting and sealing? If I do that, what adhesive should I use? The house is just an old country frame house that I'll be selling to another frugal guy like me who is happy with clean, safe, and working and doesn't require fancy. I'm afraid to try to pull up the old backer board because it was probably stuck down with asbestos mastic like everything else back in the Asbestos Age of construction. Even if I pulled the remaining tiles off, what replacement covering could I use? Thanks for ideas!