RadonSeal Efflorescence Cleaner removes efflorescence, hard water stains, cement haze, lime, and rust deposits from masonry surfaces. A water-soluble formula that is safe for indoor use. Contains no phosphoric, muriatic, or hydrochloric acid. Much safer than the “old school” acid cleaners. Zero VOCs and no harsh fumes. You can skip the neutralization step afterward and simply flush the surface with water.
Use for cleaning and removing efflorescence prior to sealing or painting concrete slabs, basement floors, foundation walls, retaining walls, limestone blocks, pavers, or stucco.