Here's a good video on the subject. You will need to dry out the wall, as the water will stay there and cause mold and mildew.
2006 Damon Daybreak 3276 35'with 5 Star Tuner. 3 200 Amp Lithium batteries and 2000 watt PSW inverter/charger. 2013 Elantra on a Master Tow dolly.