Use an acrylic latex paint if you are painting exterior cinder block.
Painting concrete block garage walls.
Scraper optional you can paint interior cinder block walls.
Any remaining loose paint will need to be removed manually.
Wait two hours for the painted cinder block to dry.
Apply the paint to the concrete block with an airless sprayer and then immediately back roll it working in sections along the length of your wall.
However there are some things to consider when painting a concrete wall.
The first step when preparing concrete block walls is pressure washing.
During the preparation pay attention to any loose mortar and large cracks.
The key to a successful cinder block paint job is applying proper sealant and primer.
You must choose the appropriate type of concrete paint determine if the wall is sealed from moisture and apply primer prior to painting the wall.
Concrete and cinder block walls don t require priming.
Simply cover them with at least two coats of your finish paint.
Paint the interior walls of concrete block basements to protect against moisture.
You ve now completed painting a concrete block wall and there s nothing left to do but sit back relax and admire your handy work.
Use a satin or semi gloss latex paint on interior cinder block.
Use a commercial style pressure washer and at least 2500 psi.
Apply paint to the cinder block garage just as you did the primer.
Whether the surface is in a basement or above ground cinder block is as easy to paint as drywall once the surface has been sealed and primed to keep moisture out.
Proper painting of these walls requires the removal of any water and mildew before beginning as well as patching the walls to prevent to growth of mold.