P-15 Boatyard Resin is an “economy” resin, thixotropic, “waxed”, polyester resin designed for general use at an ambient temperature. P-15 is pre-promoted for curing at room temperature with the addition of methyl ethyl ketone peroxide (MEKP) initiator. Sold as a kit including MEKP. If higher bonding properties are required use P-16, or P-17. 3 month shelf life from shipment date.