StreetBond® QS Concrete Primer is a two-component, epoxy polyamide pretreating primer specifically designed to increase the bond of StreetBond® coatings to concrete surfaces. QS Concrete Primer protects against destructive salts, oils, solvents, and gasoline. Its low viscosity allows it to penetrate into the surface, creating a tenacious physical and chemical bond; it also helps to solidify punky or chalky surfaces. StreetBond® coatings applied on concrete over QS Concrete Primer will handle expected traffic volumes as if applied to regular asphalt.