Repairs or resurface concrete, masonry, stucco and brick, up to 3 in thick in one application. Waterproof non-shrink formula with exceptional strength and adhesion for worn concrete/masonry, glass, steel aluminum and wood. Used to anchor bolts, railings into concrete, and to build up broken steps. Mix only the powder and bonding liquid included in pail; do not add water. Contains 12 lbs. powder & 1 Qt bonding liquid. 12 lbs. covers about 6 sq. ft., 1/4 in thick.