Drylok Etch masonry cleaner, prepares concrete surfaces for painting. Granular material requires only mixing with water, it also removes efflorescence from masonry. Cleans mortar from brick and ceramic tile and etches galvanized surfaces for painting. Made from Sulfamic acid. Contains no muriatic acid.
Preparessmooth concrete for painting
Use to patch interior or exterior mortar joints, cracks and holes in masonry walls above or below grade, sealing leaks around concrete and masonry