Blackfriar Quick Drying Radiator Paint will take a temperature up to 150°C and is available in a white semi-gloss finish. As we don’t know what actual surface temperature the storage heater will get up to we can’t say for sure if the paint will be OK on any particular storage heater, it could depend on the model, type etc. You will need to check with the manufacturer to find out what the surface temperature of their particular heater will get to during use. If it is below 150°C then Blackfriar Quick Drying Radiator Paint could be used.