This is a specially formulated Primer that is a fast dry, acrylic resin-based to be applied directly to concrete, asphalt and other substrates. Once the primer is applied and dry, thermoplastic solid heat - applied traffic paints can be applied over it. The Primer forms a good strong deep penetrating base coat to help the top applied thermoplastic top-coat bond-adhere better to the substrate. It also forms a water barrier to protect and prolong the life of the solid thermoplastic traffic paint that is applied as a topcoat.