Captain Tolley s Creeping Crack Cure is a low viscosity, specially blended, acrylic copolymer, emulsion-based product with exceptional penetrating properties. Once set, Captain Tolley s Creeping Crack Cure has good flexibility and bond strength. Its exceptional penetrating properties enable it to be absorbed into fine hairline cracks with minimal assistance and penetrate deep into the structure. As the product sets, it will seal the crack helping to prevent further ingress of moisture and, provided that the cracks are clean, a good bond will be obtained to the surfaces.