Water-based Blackboard paint, quick-drying. It is applied in two coats on clean - dry surfaces easily with a brush or roller for a perfect result. Suitable for all surfaces, with excellent adhesion, coverage, high resistance to chalk etching and great resistance to frequent washing - rubbing. On porous surfaces the use of Gesso Primer substrate is recommended. 24 hours after application, write with chalk or wet chalk markers and wipe with a damp sponge and dry cloth. Ready to use.