Surface Preparation & Application: Sand the surface with Emery Paper 180. Wipe clean with soft cloth. Apply a coat of Indigo Water Thinnable Cement Primer. Allow 6-8 hours for drying. Smoothen the surface by filling cracks with thin coats of Indigo Acrylic Wall Putty and allow 4-6 hours to dry. Sand with Emery Paper 180 and wipe clean. Apply another coat of primer. Sand the surface with Emery Paper 320. Advantages Extra Smooth finish Excellent adhesion strength with wall & paint Alkali resistant Fast drying