Painting a hot radiator can affect the quality of the paint finish, so make sure that the radiator is turned off and completely cooled down before you start painting.
Preparation
Painting the Radiator
For best results, ALWAYS READ THE PAINT CAN LABEL. Professionals read the paint can labels to get the paint manufacturers’ most up-to-date information and instructions on the use of each specific paint. Every paint is different, and the labels provide important information, such as the average coverage area per gallon, drying times, number of coats needed, and surface preparation requirements. The labels also give specific safety information that should be carefully adhered to.
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