Americana Chalkboard Paint can transform a wide range of surfaces into chalkboards. Create trendy chalkboard writing surface projects such as memo boards, canister labels, kid's wall décor, and more. Non-toxic,soap and water clean-up while wet, brushable formula, durable finish. When using on rough or porous surfaces, sand smooth and then prime with gesso. Directions for use: Shake well. Apply one coat horizontally and allow to dry for one hour. Apply the second coat vertically and allow to dry. Let cure for 24 hours. Condition surface by lightly rubbing the side of a piece of chalk across it. Coverage: 2 oz bottle covers approximately 5 square feet.