A cleaner can be sprayed from a bottle to cut dirt.cleaning products image by AGITA LEIMANE from Fotolia.com
Clean the surface that is going to be painted. A cleaning solution can be purchased from any home building center; Red Max or any concrete and masonry cleaner will do fine. Spray the cleaner from a pump canister or spray bottle onto the surface of the slurry.
Brushing off loose dirt and gritwall painting man image by timur1970 from Fotolia.com
Rinse off the area with a power washer or garden hose, to remove any loose dirt and grit. Allow the surface to dry. If you do not want to use excess water for dirt removal, use a broom or brush to clean loose dirt out of the area.
Brushing on primeryoung woman painting a wall green on a ledder image by Cherry-Merry from Fotolia.com
Prime the surface, using a sealer to block out moisture and protect the slurry. Allow time for the surface area to dry. The product that you purchased should tell you drying times in the instructions.
Crack to be filled with groutCracked Wall image by Lee Mann from Fotolia.com
Use a lightweight grout to fill in cracks, if the area has crevices and cracks that you do not want to show through in the paint work.
Rolling on paintpaint roller image by Ana de Sousa from Fotolia.com
Roll the paint onto the surface area and let it dry. Alternatively, you can brush the paint onto the area.
Finished wallLight Green Faux Painted wall image by Jim Mills from Fotolia.com
Look over the area after the paint has dried to make sure that the paint covered the whole surface and did not leave any unpainted spots. If there are unpainted spots, you should repaint. Generally, every paint job needs two top coats of paint.