Things You'll Need
Trisodium phosphate (TSP)
Cement porches can last for many years so why not make yours more attractive. It's simple enough to do and just takes physical exertion, a few tools and the right paints to make this area pleasing to the eye. Doing the job right the first time will give you long lasting color and protection for your cement surface.
Scrape the old paint off the surface of the cement. Use your paint scraper and a wire brush. All loose particles should be vacuumed or swept away.
Scrub the porch with a mixture of ¼ cup of TSP and 1 gallon of water. This will help remove any oil or grease stains. Allow the porch to thoroughly dry. This may take more than one day depending on humidity levels.
Fix any damaged areas before painting with a concrete patch so that you have a smooth surface that is free of holes and cracks.
Apply a cement sealer and a primer with the paintbrush. Homeimprovement.superpages.com recommends checking with the manufacturer or a professional to be sure the primer and sealer you are using are compatible.
Paint your floor with cement or concrete paint using either a paint roller or paint compressor. A paint brush can be used to get into the edges and corners. Allow some drying time between coats if you are applying more than one coat.
Apply a cement paint sealer, after the floor is completely dry to touch, to give your paint longer life and to protect it from penetrating oils and colors from food and drink spills.
You can get creative with your second coat of paint by taping off geometric designs and painting the sections different colors.
Remember to paint away from your door so you are not trapped in a corner.
A painted porch is much more slippery than a non-painted porch. The slightest amount of humidity can create a hazard. There are floor additives available that add a little texture to the paint. These help cut down on the slipping hazards of a painted cement porch.