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 Can TotalBoat Polyester Fairing Compound be used below the waterline if top coated with gelcoat? How long should TotalBoat TotalFair cure prior to priming or painting? What is the coverage for TotalBoat Polyester Fairing Compound? 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?