High-strength patching compound fortified with a vinyl polymer to increase adhesion and durability. Patching compound fills holes and repairs cracks, chips and other imperfections in concrete. Can also be used to bond broken pieces of concrete and to repair deteriorated mortar joints. Not recommended for surfaces subject to vehicle traffic, prolonged water exposure or complete water submersion. Compound may be smoothed or feather edged. Fills greater than 1/4" deep, requires 2 or more applications. Allow overnight drying for surface patching and longer for deep fills.