Cover Paint to Keep it skimming over. Paint dries fast, even paint in your roller tray. If you need to take a break for more than 10 minutes, cover the your paint. Place a lid on your 5-gallon bucket of paint and a damp cloth over your handheld paint container. Use plastic or a damp cloth to cover your paint tray. If you do not you will run into big problems with dried on your walls. Follow us on Instagram “idahopainter”