I am going to paint my bathroom over the next few days. I will be suing Dulux bathroom paint. The room tends to oscillate between being very cold ( it has 3 external walls and was built a considerable time ago) and quite hot due to the big radiator in there. My question is should I turn off the radiator whilst I am painting. I am concerned that the wall directly above the radiator may be so warm that the paint dries too quickly and cracks. Any ideas? Your help would be greatly appreciated.