Etch & Clean is the surface prep that makes your epoxy floor stick. It removes concrete laitance (the weak, powdery top layer) and opens up a fine surface profile so your garage floor epoxy bonds tightly to the slab. Skip this step and even the best coating can lift - get it right and your floor will last for years. Bare concrete is too smooth for epoxy to grip properly. Etch & Clean acid-etches the surface to a texture like fine sandpaper, the ideal key for primer and base coat. It is the standard DIY alternative to mechanical grinding and an essential part of every floor job. Coverage 500g makes 7.5L of solution and covers up to 20m² 1kg makes 15L of solution and covers up to 40m² How to use Degrease and clean the floor first Apply the etch solution, scrub it in section by section, then rinse thoroughly Let the slab dry completely before priming For a contaminated floor, degrease first with our Degreaser. Etch & Clean is included in our complete epoxy floor kits. Etch & clean is sold in 500g and 1kg packs.