Sonoguard® coating systems are composed of: Sonoguard® Base Coat, a one-component, moisture-curing polyurethane, Sonoguard® Top Coat, a one-component aliphatic moisture-curing polyurethane, and Sonoguard® Top Coat Tint Base, consisting of 40 standard colors. For projects requiring primer, 2 choices are available: Primer 772 VOC, a one-component solvent-based primer and sealer, and Primer 770, a two-component waterborne epoxy primer and sealer.