Pinflair Blackboard Paint Blackboard Paint is a water based quick drying paint that can be applied to cardboard, wood and chipboard. When dry the paint can be written on using chalk. Stir well before use and apply the paint in two steps using a synthetic brush. Ensure that the surface to be painted is clean, grease free and dry. Step 1. Paint evenly onto the surface that you want to cover with horizontal brush strokes and allow to dry. Drying time between coats is normally about 10-15 minutes or until the painted surface has turned matt. Step 2. Now paint the Blackboard Paint on vertically and leave to dry completely before writing on. Contains 90ml