Cobble Prep

Concentrated Effloresence & Organic Stain Remover:  Formulation containing no muriatic or phosphoric acid and engineered to clean unsealed paving stones and concrete and prepare surfaces for sealing.  Highly concentrated blend will remove efflorescence (white lime residue) and surface stains resulting from fertilizer, vegetation, and mortar. 


  • Safer than typical acids
  • Contains no phosphoric or muriatic acids to wash concrete
  • Easy to Rinse 
  • Provides uniform surface for sealer to be applied
  • Eco-friendly


Available in 1 Gallon & 5 Gallon Pails

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