A low viscosity polymer enhanced water borne primer especially formulated to prepare synthetic roofing membranes for Guardian Seamless Roof Coating. Suitable for these synthetic membranes: EPDM (Rubber), PVC (Plastic), TPO (Thermoplastic Olefin), SPUF (Sprayed-in-place Polyurethane Foam), CSPE (Hypalon®), PIB (Polyisobutylene) & CPE (Chlorinated Polyurethane) roofs. Enhances bonding of the coating to these membranes. Quick, easy application. Dries in 20 - 30 minutes.