I'm hoping to install a kitchen island in the near future. However, my home was built in the 70s and thus asbestos is a concern. It appears the previous owner removed the old kitchen tile and installed a vinyl floating floor, but the black mastic which held the old tile remains. Based on the results of testing I had done on tile in the basement, it would be safe to assume the mastic contains asbestos, as well.
Google has informed me that installing an island on top of a floating floor would be a poor idea. Regardless, if I pull up the vinyl or not, screwing down the island into the mastic doesn't sound like a great idea. Even if the mastic was encapsulated, I'm not sure how safe it would be to screw an island down.
All that to say, is there a safe way to securely anchor a kitchen island to the subfloor in the above conditions?
Thank you in advance for the help!