Hi-Build Masonry Filler is a high quality, heavy bodied latex mold and mildew resistant filler designed for use on above grade masonry, in both exterior and interior applications. The acrylic resin and special pigments formulated into Hi-Build Masonry Filler will fill voids and cracks in masonry. May be applied to properly prepared     Concrete     Masonry and Stucco including:         Concrete Masonry Units (CMU)     Masonry Brick Cinder Block