Rustins High Heat Matt Black Paint - 500ml Rustins High Heat Paint is a fast-drying protective and decorative paint which is stable to temperatures up to 600°C. It is suitable for use on ferrous metals such as wood burning stoves, barbecues, domestic and industrial stoves, furnace chimneys, grates and exhausts. Drying time: The surface will be touch dry within 15 minutes and can be handled in 1 hour in good conditions. Coverage: 1 litre covers approximately 15 square metres per coat depending on the type of application equipment and method of application.