Painted cement patios are constantly exposed to the elements. Rain, dirt and mold can affect the cleanliness of your backyard patio. Chemical cleaning solutions are effective when removing stains on painted cement; however, these solutions can be abrasive and cause damage to the paint. Fortunately, there is another way to clean painted cement without harsh chemicals. Clean a painted cement patio the natural way by using household items such as vinegar, a scrubbing mop and a standard garden hose.
Mix one part vinegar with two parts water. The amounts will vary depending on how large your patio is.
Dip the mop in the vinegar solution, and swish it across the entire patio. Scrub harder in areas that are stained or have mold. You may need to use a scrub brush for these areas.
Hose the vinegar solution off the patio. The easiest way to do this is by using a hose spray attachment.
Let it air dry.
Apply a water-based sealer made for painted concrete to the patio. This will protect the patio from moisture damage, oil stains and freeze or thaw damage. Make sure to follow the directions on the packaging since different sealers require different processes.