Recent tests have confirmed that the floor tiles and mastic on my basement floor contain asbestos. These floor tiles are not in good condition, as they are cracked and warped. I would like to avoid having to remove these tiles, but they need to be covered. I cannot use carpeting because of possible moisure issues, and a new vinyl floor cannot be placed on top of the old tile because of the warped tiles. So I thought, maybe a layer of concrete can be poured over the old tile, and that concrete will seal the asbestos tile. But is this a possibility? Can a thin layer of concrete be poured on top of an existing tile floor? If it can, how expensive will this be for about 500 sq. ft.?