We noticed this morning after 9 nights camping that water was dripping from the coroplast. I removed all of the access panels and determined the leak was coming from the shower drain. The shower drain does not appear to be water tight (will post pictures later). However, it shouldn't need to be as it shouldn't be under pressure. The shower drain does not have a P trap and instead has a HepVo trap installed. I removed the trap and noted it was full of soap scum, but nothing really clogging it. I cleaned it out, reinstalled it and my leak went away. The HepVo is directly over my water heater and the leak soaked into the osb shelf for the water heater. Luckily it should dry completely when I get back to AZ.
Ugh.
2018 Coachman Chaparral 381RD
TV - 2013 Ford F350 Diesel SRW 4x4 Short Bed