System #1 – “Open” structures (with H2S freely escaping)
1st coat          Cem-Kote Flex ST     Flexible Polymerised Cementitious Waterproofing
2nd coat        Cem-Kote Flex ST     Protects concrete against Sulfuric Acid
Cem-Kote Flex ST is a 2-component, flexible, breathable, thixotropic, polymerised cementitious coating with high adhesion to concrete and properly prepared steel surfaces. Cem-Kote Flex ST is insensitive to moisture in the concrete and high relative humidity unlike polymer (epoxy & polyurethane) coatings. Cem-Kote Flex ST forms a seamless membrane - without joints & its inherent flexibility is enhanced with Reinforcing Fabric HD to deliver an excellent bridging of substrate cracks. Cem-Kote Flex ST forms a highly alkaline coating that protects concrete, or other substrate against attack by salts, and chemicals used in treatment of drinking water.
Application Procedures
Concrete surface is cleaned and profiled using high-pressure water 34 MPa (5,000 psi)
Cracks are repaired using Reinforcing Fabric HDembedded in Cem-Kote Flex ST
Cem-Kote Flex ST is applied by spraying or brushing – 2 coat application is required Allow the 1st coat of Cem-Kote Flex ST to cure sufficiently to allow application of 2nd coat.
Curing – 3-day air cure is sufficient prior to exposure to water