On a couple of occasions we had noticed water leaking from under the front of the shower, it appeared to be coming from between the front wall of the shower, just below the door, and the floor.
Having a leak here is never a good thing, the wood paneling would soon suffer.
It was a bit of a mystery as to just where this water was coming from, the seal around the door appeared to be ok, the shower base is a one piece fibre glass 'basin' and there was nowhere water could leak....the drain plug became suspect.
Now, Jayco in their wisdom, had heaped a black bitumen/rubber type sealing compound all around the area where the drain plug protrudes through the floor on the underside of the caravan....it took a lot of sweat and the occasional swear word before I had this goop cleared away so i could remove the drain plug and fitting. I used an old lino knife and narrow nosed pliers, cutting into the sealer and pulling small pieces out with the pliers....a lot of care with the knife was needed lest I damaged the fibre glass shower base.
Once I was able to remove the fitting the reason for the leak became obvious, the plastic flange that is supposed to sit in a recess in the shower base and seal the drain was poorly made, two tiny lugs, formed when the plastic was moulded, had not been cleaned off and were preventing a seal, there was one of these 'lugs' on each side of the fitting. I cleaned them off with a Stanley knife and very fine sandpaper, applied a very thin film of silicone sealer and refitted the drain....a test confirmed the leak was fixed.