Fill all holes and cracks with mortar.
How to clean concrete basement floor before painting.
Remove all flaking peeling paint using a scraper and wire brush.
Attach a brush or coarse scrubbing pad to an electric floor scrubber.
Allow the mortar to dry for the time recommended.
How to repaint concrete floors.
Prime and paint priming before you paint concrete floors helps ensure that your new look will stick.
The acid can t penetrate oily patches and will leave an uneven subpar flooring.
Sweep the floor of all.
Smooth and sand rough edges using 100 grit sandpaper.
If you are working on an outdoor piece of concrete flooring clean it of any grease.
Prepare to mop the concrete with a trisodium phosphate solution tsp.
Acid etching with vinegar is easy and less labor intensive than using a machine to pretreat the concrete floor before sealing or painting.
Dampen the cement floor thoroughly with a hose.