How to Paint a Concrete Floor

Clean the Concrete Thoroughly

Sweep away any dirt, debris, old paint flakes or efflorescence from the floor.

Use a scrub brush and a cleanser specifically made for concrete to wash the floor once you've removed the debris.

Apply a Sealer to the Concrete Floor

Apply 2 to 3 coats of sealer to the floor. Allow the sealer to cure for several days between coats; follow the manufacturer's instructions for mixing and curing of the sealer.

After each coat, use a paint roller to smooth the sealer over the concrete, slightly overlapping each stroke.

Use a paintbrush to apply the sealer to the edges and corners of the room with each coat as well.

Apply a Concrete Primer to the Concrete Floor

Pour the primer into a paint tray and dip a paint roller into the primer.

Roll it onto the floor in even strokes.

Use a paintbrush to apply the primer to the corners and edges of the room.

Paint the Concrete Floor

Pour some masonry paint into a paint tray. Choose a high-quality breathable acrylic paint.

Dip a masonry roller into the tray and coat it well.

Roll the masonry paint over the floor in smooth, slightly overlapping strokes.

Apply paint to the corners and edges of the floor with a paintbrush.

Let the masonry paint dry for at least 24 hours between coats; apply 2 to 3 coats for the best results.