Master Painter Latex Block Filler is a professional quality, heavy bodied, interior/exterior latex undercoat designed to fill voids and smooths irregularities on new concrete block and other masonry surfaces. Helps reduce the porosity and seal masonry surfaces prior to painting. Reduces the penetration of finish coats providing for less paint consumption and an even sheen.
Surface preparation is important. All surfaces must be smooth, clean, dry, and free of mildew, grease, soap film, sanding dust, or other contaminants. Remove all loose or peeling material from previously painted surfaces. Wash all surfaces with a solution of 3 tablespoons of phosphate-free TSP in a gallon of warm water. Rinse thoroughly, allow to dry, and then scuff sand using 80–120 grit sandpaper on a hand sander. Remove all sanding dust. Do not apply at temperatures below 10˚C (50˚F).
WARNING! If you scrape, sand, or remove old lead paint from any surface, you may release lead dust. LEAD IS TOXIC. Exposure to lead dust can cause serious illness, such as brain damage, especially in children. Pregnant women should also avoid exposure. Wear a NIOSH-approved respirator to control lead exposure. Carefully clean up with a wet mop or HEPA vacuum. For additional information, Canadian customers may contact the Product Safety Division of Health Canada at 1-800-O-CANADA, and U.S. customers may contact the U.S. EPA/Lead Information Hotline at 1-800-424-LEAD (5323).