What is the maximum useful temperature of cured TotalBoat Polyester Structural Putty? Eric Boudreau April 01, 2022 14:54 Updated TotalBoat Polyester Structural Putty has a maximum useful temperature of 155°F. Related articles How long should TotalBoat TotalFair cure prior to priming or painting? What is the cure time for TotalBoat Gelcoat with or without wax? Do I need to prime before painting cured TotalBoat TotalFair epoxy fairing compound? Can TotalBoat Polyester Fairing Compound be thinned?