Access the concrete tile roof using an extension ladder. Follow the safety directions printed on the labels located on the side of the ladder to avoid injury due to fall.
Wash away dust, leaves, and other debris from the Monier concrete roof using a pressure washer. Begin at the edge of the roof and work backward toward the ladder to avoid backtracking over the slippery, wet surface.
Brush on the exterior acrylic primer using a latex paintbrush. Begin at the edge and work backward toward the ladder as you did in Step 2.
Clean the brush using warm water.
Allow the roof to dry for at least two full hours. Brush on exterior acrylic paint in the same manner as you did the acrylic primer.