This story shows how to apply an epoxy finish.
Epoxy will not adhere to a damp floor, so test it for dampness. For optimum curing when you apply the paint, the concrete should be a minimum of 55 degrees and the air temperature should be between 60 and 90 degrees.
From 30 to 45 minutes per square yard to prepare the surface, plus another 15 minutes to paint each section
Flat-edge shovel or scraper, vacuum, garden hose, power scrubber with brush attachment, stiff-bristle brush, rubber squeegee, wet vac, plastic sprinkler can, drill with stirring bit, brushes, 9-inch medium-nap roller
Prepare and paint concrete
Duct tape, plastic bag, cleaning/degreasing solution, rubber gloves, respirator, water, muriatic acid, two-part epoxy paint
If necessary use a flat-edged shovel or scraper to remove any hardened debris, then vacuum the entire garage floor. Prepare a cleaning/degreasing solution according to manufacturer's instructions. Wearing rubber gloves use a stiff-bristle brush and the solution to scrub off any grease or oil stains.
Pour a gallon of water into a plastic sprinkler can. Wearing a vapor respirator as shown, pour 12 ounces of 32-percent muriatic acid (the most common formulation) into water (1 part acid to 10 parts water) in the sprinkler can. Mix the solution for a few seconds with a paint stirrer. Sprinkle the mixture evenly over a 10x10-foot area.
Power-scrub the 10x10-foot area for 10 minutes or, to save on equipment rental, use a long-handled acid brush. Repeat the sprinkling/scrubbing process until the entire floor is acid etched. When you're finished rinse the floor three times to flush the residue out. Let the floor dry overnight.