Concrete fences are typically gray and dull, making them boring and sometimes unsightly. To remedy this, you can paint a concrete fence, giving it color and make it look new. Painting an outdoor concrete fence can be done alone or you can ask a family member or friend to help you. It is important to remember to use only primer, paint and sealer that is made for concrete and block. Otherwise, the paints will not bond and will flake off the fence.
Mix together three parts water with one part trisodium phosphate (TSP) in a bucket.
Put on rubber gloves and thoroughly scrub the concrete fence with a scrub brush, cleaning away any dirt and grime. Rinse the concrete fence with plain water and allow to air dry.
Fill any holes or cracks in the fence with concrete patch using a trowel to apply the patch and to smooth it flush with the surface. Let the patch dry according to the manufacturer's instructions.
Pour concrete primer into a pump sprayer and apply a coat of primer to the fence. Let the primer dry completely before continuing on to the paint.
Rinse the pump sprayer with mineral spirits, then water and let air dry. Add concrete paint to the sprayer and spray on the first coat of paint. Let the first coat dry between 3 and 4 hours, then apply a second coat of paint.
Brush a coat of concrete sealer onto the fence using a paintbrush once the second coat of paint has dried.