In the concrete re-surfacing and decorative surface industry the best way to prep a concrete surface is by Shot-blasting the existing concrete so that the new product has a clean surface to bond to. Shot-blasting is more or less dust free.

Did you know it is possible to level concrete slabs? Ardex has a self leveling product to apply at a min. 1/4″ and thicker. The slab will need to be prepped correctly, but the results are awesome. We can either level the floor to be covered with a flooring material or just use a SDT [...]