Good Day, I am hopefull of receiving sound advice from this community. In brief, I am begininng a basement renovation that will involve new flooring. I am interested in installing Shaw's Floorte 'luxury vinyl plank' (Uptown Now WPC - Hamilton). The basement is below grade and with a concrete substrate slab. Part of the concrete slab is (approximately 240 sq ft) covered with 9"X9" vinyl glue-down tiles, likely installed in the 1960s by the original owner. The mastic is black in colour. I have no manufacturers information regarding the tile or mastic but I strongly suspect it includes asbestos. The tiles are in relatively good shape (i.e., are secure to the concrete) and have been covered by broadloom as well as floating, engineered wood for the last 10 years. The basement is relatively dry with no moisture issues evident. If possible I would like to avoid the need to remove the vinyl tiles via a licensed abatement contractor and leave the tiles in intact 'under' the new floor. I have contacted city officials and they have confirmed this would be incompliance with municipal and provincial regulations. The basement renovation will involve approximately 700 sq ft.. The floor will need to be levelled in areas. Assuming I leave the original vinyl tiles intact/undistrubed: - can I use a self-levelling compound over the existing vinyl tile? (Tech Support at Ardex have told me they have no product that will encapsulate the vinyl tile.) Will bonding of the SLC be an issue? Ideas on mitigating this issue?; - should I simply use a product such as DRICore (floating) and install the vinyl planks over top? Other ideas/approaches most welcome. Thank you in advance and please accept my 'long-winded' e-mail.